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  • 更新日期:2018-10-17
  • A combination of the finite element analysis and experimental indentation via the cornea
    J. Mech. Behav. Biomed. Mater. (IF 3.239) Pub Date : 2018-10-16
    Alireza Karimi, Reza Razaghi, Toshihiro Sera, Susumu Kudo

    The purpose of this study was to perform a set of experimental indentation test to certify our proposed eye model enables to have a better deformation assessment for the eye globe under the indentation load compared to other eye models. To do that, twenty-four enucleated human globes were removed from the cadavers. A screw at 5 different loading rates indented to the eye globes and the resulting macroscopic force-displacement as a result of the deformation in the apex of the cornea was measured. The experimental results revealed significantly higher stiffness, elastic modulus, and maximum force for the globe at higher loading rates (50 and 100 mm/min) (n = 4 globes, p<0.05, post hoc Scheffe method) compared to the lower ones (5, 10, and 20 mm/min). The mean stiffness, elastic modulus as well as the mean maximum force of 1.64±0.38 N/mm, 303.40±111.10 kPa, and 53.88±17.63 N (Mean±SD) were observed for the eye globes under all loading rates, respectively. Our eye model due to incorporating the anterior (cornea, aqueous body, and iris) and posterior (sclera, retina, and vitreous body) components showed a good agreement with force-displacement diagrams compared to that of the experimental results not only at lower but also at higher loading rates.

    更新日期:2018-10-17
  • Matrix stiffness regulates Epithelial-Mesenchymal Transition via cytoskeletal remodeling and MRTF-A translocation in osteosarcoma cells
    J. Mech. Behav. Biomed. Mater. (IF 3.239) Pub Date : 2018-10-16
    Jun Dai, Liang Qin, Yan Chen, Huan Wang, Guanlin Lin, Xiao Li, Hui Liao, Huang Fang
    更新日期:2018-10-17
  • In situ TEM investigation of irradiation-induced defect formation in cold spray Cr coatings for accident tolerant fuel applications
    J. Nucl. Mater. (IF 2.447) Pub Date : 2018-10-16
    Benjamin R. Maier, Hwasung Yeom, Greg Johnson, Tyler Dabney, Jing Hu, Peter Baldo, Meimei Li, Kumar Sridharan

    The first in-situ ion irradiation and transmission electron microscopy (TEM) of cold spray deposited Cr coatings was performed at the Intermediate Voltage Electron Microscope (IVEM) facility at Argonne National Laboratory for preliminary investigation into the radiation damage tolerance of these materials for use in accident tolerance fuel cladding. The severely plastically deformed microstructure of the cold spray deposited Cr delayed the onset and growth of radiation induced defects when compared to an annealed coating simulating bulk Cr. Evidence to support this conclusion was based on defect density and defect size measurements of TEM images obtained at different irradiation intervals.

    更新日期:2018-10-17
  • The influence of irradiation induced vacancies on the mobility of helium in boron carbide
    J. Nucl. Mater. (IF 2.447) Pub Date : 2018-10-17
    Kevin Gillet, Guido Roma, Jean-Paul Crocombette, Dominique Gosset

    Boron carbide, used as a neutron absorber, undergoes nuclear reactions producing relevant quantities of He. The understanding of He kinetics at the atomic scale in the material is still in its infancy, in spite of decades of experimental work devoted to the characterization of He containing, irradiated, boron carbide samples. The interplay of He itself with intrinsic defects created by irradiation on kinetics is still almost completely unknown.In this paper we present an exhaustive study of vacancies and substitutional helium impurities in boron carbide using Density Functional Theory. Analyzing the stability and mobility of these defects allows us to consider diffusion mechanisms other than the known interstitial mechanisms.We find that vacancies trap He interstitials, raising the activation energy of 2D diffusion to approximately 2 eV. The trapping mechanism is different according to the charge state of the vacancy: in p-type conditions, when vacancies are neutral or positive, He diffuses via a dissociative mechanisms and is trapped in a substitutional position; in n-type conditions, negative vacancies trap He atoms traveling in an adjacent {111} plane by a charge transfer driven distorsion.No favorable vacancy assisted diffusion mechanism was identified for substitutional He atoms, except the dissociative one previously mentioned. Other possible vacancy diffusion mechanisms, which we also analyzed, are hindered by the high activation energy of vacancy self-diffusion.

    更新日期:2018-10-17
  • Shape memory driving thickness-adjustable G@SMPU sponge with ultrahigh carbon loading ratio for excellent microwave shielding performance
    Mater. Lett. (IF 2.687) Pub Date : 2018-10-16
    Yongjie Yan, Hong Xia, Yiping Qiu, Zhenzhen Xu, Qing-Qing Ni

    Shape memory driving thickness adjustable graphite (G) micro-flakes@shape memory polyurethane (G@SMPU) sponge was fabricated by two-step dipping separately in G-dispersed aqueous solution and SMPU/THF solution for high-performance microwave shielding. The sponge exhibited an ultrahigh G loading ratio (G/sponge, wt/wt) up to 490 wt.%. For the first time, dipping coating of SMPU onto the sponge was proposed, and the obtained G@SMPU sponge exhibited a good recovery effect at least above 90 % after thorough compression. And also, the thickness could be adjusted by utilizing its shape memory property. For microwave shielding, G-9@SMPU and G-18@SMPU sponges achieved the shielding effectiveness over 20 and 30 dB, respectively. Moreover, varying thickness or compressing repeatedly even up to 100 times would not obviously decrease the shielding effect of the G@SMPU sponge. This suggests the steady distribution and adhesion of G micro-flakes inside the three-dimensional sponge substrate due to the fixing of SMPU.

    更新日期:2018-10-17
  • Fabrication of enhanced silver nanowire films via self-assembled gold nanoparticles without post-treatment
    Mater. Lett. (IF 2.687) Pub Date : 2018-10-16
    Qi Su, Tao Xue, Yibo Zhang, Kuibo Lan, Qiang Zou

    Transparent Silver nanowire (AgNW) electrodes have been widely explored in many applications as a promising alternative to relatively expensive indium tin oxide (ITO). For these applications, high contact resistance at the junctions of AgNWs is a main problem to be solved. In this letter, gold nanoparticles (AuNPs)-self-assembled method has been demonstrated to improve the optoelectronic performance of AgNW films. The sheet resistance of this novel AgNW film is measured as low as 13.2 Ω/sq, and the transmittance is high to 86.1 %. Self-assembled AuNPs can enrich the percolation paths between AgNWs with negligible loss of optical properties, thereby realizing the excellent optoelectronic performance of AgNW films. Moreover, no extra post-treatment procedures are needed for the fabrication process. All these advantages indicate this method has great potentials for achieving high performance transparent electrodes in emerging optoelectronic devices.

    更新日期:2018-10-17
  • Alloy engineering to promote photodetection in InxSn1-xS2 and SbxSn1-xS2 ternary alloys
    Mater. Lett. (IF 2.687) Pub Date : 2018-10-16
    Ankurkumar J. Khimani, Sunil H. Chaki, M.P. Deshpande, Sanjaysinh M. Chauhan, Jiten P. Tailor

    To produce high performance optoelectronic devices, ternary alloys prepared by indium (In), antimony (Sb), tin (Sn) and sulphur (S), the InxSn1-xS2 and SbxSn1-xS2 (x = 0, 0.05, 0.15), are exploited for their application in moderately fast photodetection. The single crystals of InxSn1-xS2 and SbxSn1-xS2 (x = 0, 0.05, 0.15) alloys are grown by direct vapour transport technique. The photodetectors based on single crystals are examined for 670 nm illumination having power intensity of 3 mW/cm2. For quantitative analysis, the typical detector parameters such as photo-responsivity, specific detectivity and external quantum efficiency are calculated. The improvement in photodetection with significantly enhanced detector parameters and fast a response is realized due to doping in SnS2. The highest responsivity of 15.48 mA/W with response time of 240 ms is achieved in Sb0.15Sn0.85S2 alloy. The present findings of enhanced photodetection due to alloy engineering can be of great advantage in intended applications of these compounds in the field of optoelectronics.

    更新日期:2018-10-17
  • Modification of synthetic zeolite X by thiourea and its adsorption for Cd (II)
    Mater. Lett. (IF 2.687) Pub Date : 2018-10-16
    Shaoqing Zhang, Miao Cui, Junhua Chen, Zhijie Ding, Xuchun Wang, Yang Mu, Changgong Meng
    更新日期:2018-10-17
  • Vanadium Nitride-decorated lotus root-like NCNFs as 3D current collector for Li-S batteries
    Mater. Lett. (IF 2.687) Pub Date : 2018-10-17
    Chaoqun Shang, Benben Wei, Xuzi Zhang, Lingling Shui, Xin Wang, Guofu Zhou

    In the present study, a facile strategy to construct 3D vanadium nitride (VN)-decorated lotus root-like N-doping carbon nanofibers (VN-NCNFs) as current collector with stable electrochemical performance for Li-S batteries was described. The polar conductive VN with catalytic property provides chemical adsorption to trap lithium polysulfides (LiPSs) and enhances the transformation of LiPSs. The Li-S batteries with as-prepared VN-NCNFs current collector display stable cycling performance with a capacity of 700 mAh g-1 after 500 cycles at 0.2 C.

    更新日期:2018-10-17
  • Transparent Carbon Nanosheet from Polyethylene using E-beam Pre-treatment
    Mater. Lett. (IF 2.687) Pub Date : 2018-10-17
    Dalsu Choi, Sungho Lee
    更新日期:2018-10-17
  • Hydrodynamic Cavitation Enhanced Biosynthesis of Silver Nanoparticles at Room Temperature and Its Mechanism
    Mater. Lett. (IF 2.687) Pub Date : 2018-10-17
    Hongyu Liu, Huan Zhang, Jie Wang, Junfu Wei
    更新日期:2018-10-17
  • Atomic Layer Deposition of Intermetallic Co3Sn2 and Ni3Sn2 Thin Films
    Adv. Mater. Interfaces (IF 4.834) Pub Date : 2018-10-16
    Katja Väyrynen; Timo Hatanpää; Miika Mattinen; Kenichiro Mizohata; Kristoffer Meinander; Jyrki Räisänen; Joosep Link; Raivo Stern; Mikko Ritala; Markku Leskelä
    更新日期:2018-10-17
  • Oxidant Concentration Modulated Metal/Silicon Interface Electrical Field Mediates Metal‐Assisted Chemical Etching of Silicon
    Adv. Mater. Interfaces (IF 4.834) Pub Date : 2018-10-16
    Jiang Wang; Ya Hu; Haichuan Zhao; Haoxin Fu; Yachun Wang; Chenliang Huo; Kui‐Qing Peng
    更新日期:2018-10-17
  • Micro–Nano‐Texturing Inner Surfaces of Small‐Caliber High Aspect Ratio and Superhydrophobic Artificial Vessels using Femtosecond Laser Filamenting Pulses
    Adv. Mater. Interfaces (IF 4.834) Pub Date : 2018-10-16
    Xue‐Peng Zhan; Yi‐Jun Wang; Yue Su; Mu‐Tian Li; Hong‐Wei Zang; Hong Xia; Huai‐Liang Xu; Bin Liu; Hong‐Bo Sun
    更新日期:2018-10-17
  • An Efficient Family of Misfit‐Layered Calcium Cobalt Oxide Catalyst for Oxygen Evolution Reaction
    Adv. Mater. Interfaces (IF 4.834) Pub Date : 2018-10-16
    Xiao Lin; Hongliang Bao; Dehua Zheng; Jing Zhou; Guoping Xiao; Chengzhi Guan; Linjuan Zhang; Jian‐Qiang Wang
    更新日期:2018-10-17
  • 更新日期:2018-10-17
  • Synthesis and Physical Properties of Layered Copper Oxytellurides Sr2TMCu2Te2O2 (TM = Mn, Co, Zn)
    J. Mater. Chem. C (IF 5.976) Pub Date : 2018-10-17
    Dongjoon Song, Gabin Guélou, Takao Mori, Masayuki Ochi, Kazuhiko Kuroki, Hiroshi Fujihisa, Yoshito Gotoh, Yuki Iwasa, Hiroshi Eisaki, Hiraku Ogino

    We synthesized new series of layered copper oxytellurides Sr2TMCu2Te2O2 with variation in transition metal (TM= Mn, Co, Zn) elements. These compounds are the first example having alternately stacked anti-fluorite Cu2Te2 layer and perovskite-like TM-oxide layer. Reflecting the longer ionic radius of Te than Se and S, it exhibits larger lattice parameters than isostructural sulfides and selenides. First principle band structure calculation for the Zn compound as a representative, predicts a semiconducting direct band gap ~1.7 eV and Co compound shows comparable band gap in the diffuse reflectance measurement result. From the thermoelectric property study, we obtained moderately large power factor ~70 Wm-1K-2 and figure of merit ZT ~0.045 at 770 K for the Co compound, which encourages further improvement in thermoelectric response by applying various enhancement methods. For the magnetic property, signature of antiferromagnetic order is observed in the Co and Mn compound. The present results not only highlight the structural flexibility of the system to tune physical properties but also suggest that replacement of blocking layer can be a new direction to improve thermoelectric performance of layered copper oxychalcogenides.

    更新日期:2018-10-17
  • A High Performance and Consolidated Piezoelectric Energy Harvester Based on 1D/2D Hybrid Zinc Oxide Nanostructures
    Adv. Mater. Interfaces (IF 4.834) Pub Date : 2018-10-16
    Alam Mahmud; Asif Abdullah Khan; Peter Voss; Taylan Das; Eihab Abdel‐Rahman; Dayan Ban
    更新日期:2018-10-17
  • Achieving Highly Saturated Single-Color and High Color-Rendering-Index White Light-Emitting Electrochemical Cells by CsPbX3 Perovskite Color Conversion Layers
    J. Mater. Chem. C (IF 5.976) Pub Date : 2018-10-17
    Cheng-Ming Wang, Yong-Ming Su, Ting-An Shih, Guan-Yu Chen, Yan-Zhi Chen, Chin-Wei Lu, Ing-Song Yu, Zu-Po Yang, Hai-Ching Su

    Solid-state light-emitting electrochemical cells (LECs) have been thought to apply for display and lighting due to their advantages of simple device architecture, low-voltage operation and compatibility with inert cathode metals. Among the emissive materials for LECs, ionic transition metal complexes (iTMCs) have relatively higher emission efficiency but they show relatively broader emission spectra, resulting in lower color saturation for display application. Here, we demonstrated that by integrating the perovskites-based color conversion layers (CCLs) with the blue iTMC-LECs, the highly saturated green, yellow, red and deep-red and the high color-rendering-index (CRI) white LECs can be obtained. The Commission Internationale de l’E´clairage (CIE) 1931 coordinates of the highly saturated single-color LECs are almost on the boundary of National Television System Committee (NTSC) color gamut, showing the potential application for display. By mixing the perovskites of different colors at an appropriate ratio in the CCLs, the white LECs show a CRI >90, which is among the highest reported values, and correlated color temperature of 2649 K. Hence the proposed technique can also be one of the good candidates for lighting applications. In addition, both the highly saturated single-color and the white LECs still have efficient emission for display and lighting applications.

    更新日期:2018-10-17
  • Remarkable Nonlinear Optical Response of Pyrazine-fused Trichalcogenasumanenes and Their Application for Optical Power Limiting
    J. Mater. Chem. C (IF 5.976) Pub Date : 2018-10-17
    Jibin Sun, Yantao Sun, Chaoxian Yan, Dongxu Lin, Zheng Xie, Shuyun Zhou, Cheng-Shan Yuan, Haoli Zhang, Xiangfeng Shao

    The C3v-symmetric hetera buckybowl trichalcogenasumanenes have attracted recent interest due to their unique features in chemical and optoelectronic aspects. To gain nonlinear optical (NLO) response, the electron-withdrawing unit pyrazine was introduced onto tricalcogenasumanenes to give the pyrazine-fused trithiasumanene (1) and triselenasumanene (2) as reported herein. The 1 and 2 exhibit the typical NLO properties which are proved by the open-aperture Z-scan technology under 532 nm nanosecond laser. It is found that the NLO performance of these two molecules is much better than the state-of-the-art NLO materials C60. The time-resolved transient absorption clearly verified that the NLO properties of 1 and 2 originate from the reverse saturable absorption (RSA) of triplet excited-state. Owing to their remarkable NLO performance, the 1 and 2 are further employed as optical power limiting (OPL) materials. The 1 and 2 exhibit OPL behavior with a limiting threshold of 0.33 J cm-2 and 0.45 J cm-2, respectively; which is prior to that of C60 (2.38 J cm-2). This work indicates that the sumanene derivatives are promising candidates for NLO and OPL materials.

    更新日期:2018-10-17
  • White magnetic paper based on a bacterial cellulose nanocomposite
    J. Mater. Chem. C (IF 5.976) Pub Date : 2018-10-09
    Nipaporn Sriplai, Pornkanok Sirima, Dulayawit Palaporn, Wiyada Mongkolthanaruk, Stephen J. Eichhorn, Supree Pinitsoontorn
    更新日期:2018-10-17
  • New heterobimetallic Au(I)–Pt(II) polyynes achieving a good trade-off between transparency and optical power limiting performance
    J. Mater. Chem. C (IF 5.976) Pub Date : 2018-10-06
    Zhuanzhuan Tian, Xiaolong Yang, Boao Liu, Daokun Zhong, Guijiang Zhou, Wai-Yeung Wong
    更新日期:2018-10-17
  • Competing thermal expansion mismatch and lattice strain engineered growth of crack free WS2 in-plane heterostructures
    J. Mater. Chem. C (IF 5.976) Pub Date : 2018-10-05
    Pawan Kumar, Birender Singh, Pradeep Kumar, Viswanath Balakrishnan
    更新日期:2018-10-17
  • Highly efficient non-doped OLEDs using aggregation-induced delayed fluorescence materials based on 10-phenyl-10H-phenothiazine 5,5-dioxide derivatives
    J. Mater. Chem. C (IF 5.976) Pub Date : 2018-10-05
    Songpo Xiang, Zhi Huang, Shuaiqiang Sun, Xialei Lv, Lianwei Fan, Shaofeng Ye, Hongting Chen, Runda Guo, Lei Wang
    更新日期:2018-10-17
  • Creation of three-dimensional structures by direct ink writing with kaolin suspensions
    J. Mater. Chem. C (IF 5.976) Pub Date : 2018-10-04
    Qinglei Sun, Zizhou Yang, Hao Cheng, Yang Peng, Yanqin Huang, Mingxiang Chen
    更新日期:2018-10-17
  • 更新日期:2018-10-17
  • Bipolar magnetism in a two-dimensional NbS2 semiconductor with high Curie temperature
    J. Mater. Chem. C (IF 5.976) Pub Date : 2018-10-01
    Yingjie Sun, Zhiwen Zhuo, Xiaojun Wu
    更新日期:2018-10-17
  • The competition between mechanical stability and charge carrier mobility in MA-based hybrid perovskites: insight from DFT
    J. Mater. Chem. C (IF 5.976) Pub Date : 2018-10-08
    Jung-Hoon Lee, Zeyu Deng, Nicholas C. Bristowe, Paul D. Bristowe, Anthony K. Cheetham
    更新日期:2018-10-17
  • Ultraviolet electroluminescence from a n-ZnO film/p-GaN heterojunction under both forward and reverse bias
    J. Mater. Chem. C (IF 5.976) Pub Date : 2018-10-08
    Qiu Ai, Kewei Liu, Hongyu Ma, Jialin Yang, Xing Chen, Binghui Li, Dezhen Shen
    更新日期:2018-10-17
  • 1.2 μm persistent luminescence of Ho3+ in LaAlO3 and LaGaO3 perovskites
    J. Mater. Chem. C (IF 5.976) Pub Date : 2018-10-01
    Jian Xu, Daisuke Murata, Byoungjin So, Kazuki Asami, Jumpei Ueda, Jong Heo, Setsuhisa Tanabe
    更新日期:2018-10-17
  • Rational design of coralloid Co9S8–CuS hierarchical architectures for quantum dot-sensitized solar cells
    J. Mater. Chem. C (IF 5.976) Pub Date : 2018-10-01
    Xiaodan Hong, Qun Liu, Xiaoyue Gao, Chunfeng He, Xingyan You, Xin Zhao, Xiangyang Liu, Meidan Ye
    更新日期:2018-10-17
  • Tuning the electronic and optical properties of graphene quantum dots by selective boronization
    J. Mater. Chem. C (IF 5.976) Pub Date : 2018-09-28
    Jianguang Feng, Hongzhou Dong, Beili Pang, Yingjie Chen, Liyan Yu, Lifeng Dong
    更新日期:2018-10-17
  • Cytotoxic and genotoxic potential of the type I photoinitiators BAPO and TPO on human oral keratinocytes and V79 fibroblasts
    Dent. Mater. (IF 4.039) Pub Date : 2018-10-17
    Marina Popal, Joachim Volk, Gabriele Leyhausen, Werner Geurtsen

    ObjectivesPhenylbis(acyl) phosphine oxide (BAPO) and diphenyl(acyl) phosphine oxide (TPO) are alternative photoinitiators to camphorquinone (CQ) in dental resinous materials. Aim of this study was to investigate their cytotoxic/genotoxic potential in human oral keratinocytes (OKF6/Tert2) and Chinese hamster lung fibroblasts (V79) in comparison to CQ.MethodsCells were exposed to different concentrations of BAPO and TPO (1–50 μM). Cytotoxicity was evaluated using H33342 and MTT assay, cell proliferation by BrdU proliferation assay and microscopy. Effects on cellular redox homeostasis were assessed by detecting intracellular levels of reactive oxygen/nitrogen species (ROS/RNS) using the DCFH2 assay and by quantification of mRNA expression of oxidatively regulated, cyto-protective enzymes. Genotoxic potential was determined by use of micronucleus (MN) assay.ResultsBAPO and TPO induced a concentration-dependent decrease of cell number. BAPO and TPO showed 50- to 250-fold higher cytotoxicity than CQ. In contrast to CQ, both photoinitiators revealed no increase of intracellular ROS/RNS. However, BAPO (10 μM) at least significantly induced mRNA-expression of redox-regulated proteins after 24 h similar to 2.5 mM CQ. Additionally, BAPO significantly raised the number of micronuclei, but only in V79 cells (10 μM: 12 ± 1, 2.5 mM CQ: 15 ± 1, medium control: 6 ± 3). However, it also significantly decreased proliferation of these cells (10 μM BAPO: 19.8% ± 7.3% compared to controls).SignificanceBAPO and TPO revealed concentration-dependent cytotoxic effects in human oral keratinocytes and V79 cells. However, in contrast to CQ, no generation of intracellular ROS/RNS was found. Only BAPO induced genotoxicity in V79 cells.

    更新日期:2018-10-17
  • Quaternary ammonium silane-based antibacterial and anti-proteolytic cavity cleanser
    Dent. Mater. (IF 4.039) Pub Date : 2018-10-17
    Ya-ping Gou, Ji-yao Li, Mohamed M. Meghil, Christopher W. Cutler, Hockin H.K. Xu, Franklin R. Tay, Li-na Niu

    ObjectiveSecondary caries and degradation of hybrid layers are two major challenges in achieving durable resin–dentin bonds. The objectives of the present study were to investigate the effects of a 2% quaternary ammonium silane (QAS) cavity cleanser on bacteria impregnated into dentin blocks and the gelatinolytic activity of the hybrid layers.MethodsMicrotensile bond strength was first performed to evaluate if the 2% QAS cavity cleanser adversely affected bond strength. For antibacterial testing, Streptococcus mutans and Actinomyces naeslundii were impregnated into dentin blocks, respectively, prior to the application of the cavity cleanser. Live/dead bacterial staining and colony-forming unit (CFU) counts were performed to evaluate their antibacterial effects. Gelatinolytic activity within the hybrid layers was directly examined using in-situ zymography. A double-fluorescence technique was used to examine interfacial permeability immediately after bonding.ResultsThe cavity cleanser did not adversely affect the bond strength of the adhesives tested (p > 0.05). Antibacterial testing indicated that 2% QAS significantly killed impregnated bacteria within the dentin blocks compared with control group (p < 0.05), which was comparable with the antibacterial activity of 2% chlorhexidine (p > 0.05). Hybrid layers pretreated with 2% QAS showed significant decrease in enzyme activity compared with control group. With the use of 2% QAS, relatively lower interfacial permeability was observed, compared with control group and 2% chlorhexidine (p < 0.05).SignificanceThe present study developed a 2% QAS cavity cleanser that possesses combined antimicrobial and anti-proteolytic activities to extend the longevity of resin–dentin bonds.

    更新日期:2018-10-17
  • Synergetic Effect Between Silicon Nanowires and Doxorubicin with Non-Toxic Doses Leads to High-Efficacy Destruction of Cancer Cells
    J. Mater. Chem. B (IF 4.776) Pub Date : 2018-10-17
    Binbin Chu, Fei Peng, Houyu Wang, Yuanyuan Su, Yao He

    We herein provide a synergetic chemotherapeutic strategy by combining silicon nanowires (SiNWs) and doxorubicin (DOX) with non-toxic doses, suitable for high-efficacy destruction of cancer cells. The presented synergetic method can ruin tumors through destroying cytoskeleton, arresting cell cycle at G2 phase, and damaging mitochondria to releasing cytochrome C.

    更新日期:2018-10-17
  • Improving the adsorption capacity for ovalbumin by functional modification of aminated mesoporous silica nanoparticles with tryptophan
    J. Mater. Chem. B (IF 4.776) Pub Date : 2018-10-17
    Min Qiao, Xun Liu, Jin-Wei Song, Ting Yang, Ming-Li Chen, Jian-Hua Wang

    Tryptophan (Trp) modified aminated mesoporous silica nanoparticles (AMSNs), shortly as Trp-AMSNs, are prepared via covalent binding. The obtained Trp-AMSNs exhibit an uniform size of ca. 83 nm, a mesopore diameter of ca. 2.6 nm, along with a pore volume of 0.439 cm3/g. It is demonstrated that Trp-AMSNs selectively adsorb ovalbumin (Ova) from complex biological matrices. At pH 5.0, 1.0 mg Trp-AMSNs produce an adsorption efficiency of 96% for 100 mg/L Ova in 1.0 mL solution. An adsorption capacity of 1240.3 mg/g is derived for Ova, which is much more improved with respect to that by native AMSNs. The retained Ova could be readily recovered by a sodium dodecyl sulfate (SDS) solution (0.5%, m/v), providing a recovery of 71.2%. Trp-AMSNs are further applied for the isolation of Ova from a protein mixture (with a molar ratio of Ovalbumin/Lysozyme at 1:10) and an egg-white sample. High-purity Ova is obtained as demonstrated by SDS-PAGE assay results.

    更新日期:2018-10-17
  • Polydopamine nanostructures as biomaterials for medical applications
    J. Mater. Chem. B (IF 4.776) Pub Date : 2018-10-04
    Ik Soo Kwon, Christopher J. Bettinger
    更新日期:2018-10-17
  • An isophorone-based far-red emitting ratiometric fluorescent probe for selective sensing and imaging of polysulfides
    J. Mater. Chem. B (IF 4.776) Pub Date : 2018-10-03
    Liming Zhao, Qian Sun, Chuanzhi Sun, Changli Zhang, Wenzeng Duan, Shuwen Gong, Zhipeng Liu
    更新日期:2018-10-17
  • Structural and Magnetic Studies of Ce-Mn Doped M-type SrFe12O19 Hexagonal Ferrites by Sol-gel Auto-Combustion Method
    J. Magn. Magn. Mater. (IF 3.046) Pub Date : 2018-10-16
    Nazia Yasmin, Sidra Abdulsatar, Muhammad Hashim, Maria Zahid, Saher Fatima Gillani, Ambreen Kalsoom, Muhammad Naeem Ashiq, Iqra Inam, Muhammad Safdar, Misbah Mirza

    The M-type hexagonal ferrites having the chemical formula Sr1-xCexFe12-yMnyO19 (x=0.000, 0.025, 0.050, 0.075, and y=0.00, 0.25, 0.50, 0.75) are fabricated via sol-gel auto combustion technique. We observed the effect of substitution of rare earth elements on structural and magnetic properties of M-type hexagonal ferrites. Scanning electron microscope (SEM), X-ray diffraction (XRD) strategies were applied for the systematical investigation of micrographs and structures of the samples respectively. Magnetic properties of all the samples were investigated through vibrating sample magnetometer (VSM). It is observed that the values of saturation magnetization (Ms) and remanence (Mr) decline with increasing the rare earth ions substitution. This decrease may follow the spin canting and magnetic dilution which results in dislocation of super exchange interactions. Synthesized samples having the value of coercivity of few hundred Oersteds show soft magnetic behavior. The synthesized samples may be applied for magnetic recording media and microwave absorbing materials.

    更新日期:2018-10-17
  • Carboplatin-loaded SMNDs to reduce GSH-mediated platinum resistance for prostate cancer therapy
    J. Mater. Chem. B (IF 4.776) Pub Date : 2018-09-28
    Shuang Liang, Leiqiang Han, Weiwei Mu, Dandan Jiang, Teng Hou, Xiaolan Yin, Xiuping Pang, Rui Yang, Yongjun Liu, Na Zhang
    更新日期:2018-10-17
  • Uniform and Nonuniform Precession of a Nanoparticle with Finite Anisotropy in a Liquid: Opportunities and Limitations for Magnetic Fluid Hyperthermia
    J. Magn. Magn. Mater. (IF 3.046) Pub Date : 2018-10-16
    T.V. Lyutyy, O.M. Hryshko, M.Yu. Yakovenko

    We focus on an in-depth study of the forced dynamics of a ferromagnetic single-domain uniaxial nanoparticle placed in a viscous fluid and driven by an external rotating magnetic field. The process of conversion of magnetic and mechanical energies into heat is a physical basis for magnetic fluid hyperthermia that is very promising for cancer treatment. The dynamical approximation allows us to establish the limits of the heating rate and understand the logic of selection of the system parameters to optimize the therapy. Based on the developed analytical and numerical tools, we analyze from a single viewpoint the synchronous and asynchronous rotation of the nanoparticle or/and its magnetization in the following three cases. For the beginning, we actualize the features of the internal magnetic dynamics, when the nanoparticle body is supposed to be fixed. Then, we study the rotation of the whole nanoparticle, when its magnetization is supposed to be locked to the crystal lattice. And, finally, we realize the analysis of the coupled motion, when the internal magnetic dynamics is performed in the rotated nanoparticle body. In all these cases, we describe analytically the uniform mode, or synchronous rotation along with an external field, while the nonuniform mode, or asynchronous rotation, is investigated numerically.

    更新日期:2018-10-17
  • Impact of temperature dependent octahedra distortions on magnetic properties of Co-containing double layered hydroxides
    J. Magn. Magn. Mater. (IF 3.046) Pub Date : 2018-10-16
    R. Yu. Babkin, Yu.G. Pashkevich, A.V. Fedorchenko, E.L. Fertman, V.A. Desnenko, A.I. Prokhvatilov, N.N. Galtsov, D.E.L. Vieira, A.N. Salak

    Distortions of hydroxide octahedral complexes in the CoIInAlIII layered double hydroxides (LDHs) (n = CoII/AlIII = 2 and 3) were studied as a function of the ratio of divalent-to-trivalent cations and temperature. A method for calculation the magnetic susceptibility of polycrystalline samples taking into account the statistical distribution of divalent and trivalent cations, and their effect on the distortions of the original structure is proposed. It is shown that the presence of a local maximum on the magnetic susceptibility curve of ConAl LDHs compounds near T ∼ 160 K is due to freezing of the lattice parameters and, as a consequence, freezing of the tilting fluctuations of the O-H bonds.

    更新日期:2018-10-17
  • Complete martensitic transformation sequence and magnetic properties of non-stoichiometric Ni2Mn1.2Ga0.8 alloy by first-principles calculations
    J. Magn. Magn. Mater. (IF 3.046) Pub Date : 2018-10-17
    J. Bai, J.L. Wang, S.F. Shi, J.-M. Raulot, Y.D. Zhang, C. Esling, X. Zhao, L. Zuo

    The complete martensitic transformation sequence and magnetic properties of the non-stoichiometric Ni2Mn1.2Ga0.8 alloy have been revealed by the first-principles calculations. The calculated martensitic transformation sequence of the Ni2Mn1.2Ga0.8 alloy during cooling is Paramagnetic Austenite (PA)→Ferromagnetic Austenite (FA)→7M→NM, which is consistent with the experimental observations. When the cubic FA phase transforms to a 7M or NM martensitic phase, a significant reduction of the down-spin total density of states occurred at the Fermi level. This makes the martensitic phase more stable than the FA phase at low temperature.

    更新日期:2018-10-17
  • Nickel-zinc spinel nanoferrites: magnetic characterization and prospects of the use in self-controlled magnetic hyperthermia
    J. Magn. Magn. Mater. (IF 3.046) Pub Date : 2018-10-17
    A.I. Tovstolytkin, M.M. Kulyk, V.M. Kalita, S.M. Ryabchenko, V.O. Zamorskyi, O.P. Fedorchuk, S.O. Solopan, A.G. Belous

    Effect of zinc substitution on magnetic properties and AC heating characteristics of Ni1−xZnxFe2O4 (x = 0 – 1) nanoparticles has been studied. Magnetic parameters, such as saturation magnetization, Curie temperature, specific loss power, have been determined for the samples. It is shown that the samples with a higher zinc concentration (x > 0.5) display reduced values of spontaneous magnetization and Curie temperature as compared to those with x < 0.5. A good agreement between the values of Curie temperature and maximal heating temperature under AC magnetic field is found for the samples with x = 0.75. It is concluded that heavily Zn-substituted Ni1−xZnxFe2O4 nanoparticles are promising materials for self-controlled magnetic hyperthermia applications.

    更新日期:2018-10-17
  • Antioxidant polymer-modified maghemite nanoparticles
    J. Magn. Magn. Mater. (IF 3.046) Pub Date : 2018-10-17
    Vitalii Patsula, Maksym Moskvin, Wei Xiong Siow, Rafal Konefal, Yunn-Hwa Ma, Daniel Horák

    Natural antioxidants, such as epigallocatechin-3-gallate and related phenolic compounds from tea, enhance particle cell-interactions and cellular uptake. In this study, surface of superparamagnetic iron oxide nanoparticles prepared by co-precipitation of Fe chlorides was modified with silica, polyethylenimine, poly(ethylene glycol), and poly(L-lysine) to protect the iron oxide core from redox-reactions with phenols, enhance uptake by the cells, prevent the particle aggregation, or enable conjugation with several phenol-based antioxidants. To reveal the relation between the particle uptake and chemical structure of the phenolic antioxidants, five of them were selected, namely phenol, phloroglucinol, chlorogenic, gallic, and tannic acid. After incubation of the phenol-modified nanoparticles with U87MG human glioma cells, intracellular levels of the reactive oxygen species were reduced in a similar manner, as measured by flow cytometry. Colorimetric iron assay revealed a comparable level of cell-associated particles, which almost did not dependent on the applied external magnetic field. The results suggest that the poly(L-lysine)-based coating is responsible for the antioxidant effects of the particles; the phenol- and poly(L-lysine)-coatings enable effective colloidal stability in aqueous media and enhance cellular internalization of the nanoparticles.

    更新日期:2018-10-17
  • A metal–organic gel based on Fe(III) and bi-pyridine ligand for template synthesis of core/shell composite polymer nanowires
    Soft Matter (IF 3.709) Pub Date : 2018-10-17
    Botian Li, Da Xiao, Dongsheng Deng, Haimu Ye, Qiong Zhou, Liming Tang
    更新日期:2018-10-17
  • Percolation Behaviors of Model Carbon Black Pastes
    Soft Matter (IF 3.709) Pub Date : 2018-10-17
    Jung-Shiun Jiang, Rong Hao Guo, Yu Shuen Chiu, Chi-Chung Hua

    The percolation behaviors of a series of high-structured carbon black (CB) pastes (CB weight fractions 10~25 wt%, ethyl cellulose as the binder, α-terpineol as the solvent) are systematically explored using rheology and impedance spectral analyses along with small angle X-ray scattering (SAXS) and scanning electron microscope (SEM) characterizations. With CB concentrations near the static percolation threshold (~20 wt%), the permittivity, ac conductance, and elastic modulus of the paste display notable enlargement, when the SAXS profile reveals the prevalence of isolated CB aggregates (mean radius of gyration ~ 40 nm). Upon further aging at 25 and 40 °C (up to 6 h), two CB pastes near the static percolation threshold (i.e., 20 and 25 wt%) exhibit prominent time-evolving responses, including a more than tenfold increase in ac conductance and elastic modulus as well as a pronounced upturn in low-q SAXS profile (q < 0.03 nm-1) and the formation of (partial) interconnected cluster network in SEM morphologies of screen-printing films. In this case, we provide the first evidence of “(aging)Time-(relaxation)Time-Temperature-Concentration Superposition (TTTCS)” for the dynamic modulus data over seven orders of magnitude in frequency, suggesting that prolonged aging time imparted to CB aggregate interaction and restructuring (or gelation) may work in tandem with the known effects of system temperature and concentration to further extend the accessible range of dynamic modulus data, similar to recent reports on the effect of curing (crosslinking) time for carbon nanotube suspension and caramel. Along with existing (three) master curves on two different colloid materials, we show that there is a fair superposition of all the dynamic modulus data over 12 orders of magnitude in frequency.

    更新日期:2018-10-17
  • Orthogonal superposition rheometry of colloidal gels: time-shear rate superposition
    Soft Matter (IF 3.709) Pub Date : 2018-10-10
    Sang Hoon Sung, Sunhyung Kim, Jan Hendricks, Christian Clasen, Kyung Hyun Ahn
    更新日期:2018-10-17
  • In situ polymer flocculation and growth in Taylor–Couette flows
    Soft Matter (IF 3.709) Pub Date : 2018-10-08
    Athena Metaxas, Nikolas Wilkinson, Ellie Raethke, Cari S. Dutcher
    更新日期:2018-10-17
  • Adhesion dynamics of confined membranes
    Soft Matter (IF 3.709) Pub Date : 2018-10-08
    Tung B. T. To, Thomas Le Goff, Olivier Pierre-Louis
    更新日期:2018-10-17
  • Preparation of pocket shaped microfiltration membranes with binary porous structures
    Soft Matter (IF 3.709) Pub Date : 2018-10-02
    Bing Yu, Yongli Luo, Xinfeng Zhang, Muhammad Usman, Adeel Ahmed, Youqing Shen, Hailin Cong
    更新日期:2018-10-17
  • Combined effects of osmotic and hydrostatic pressure on multilamellar lipid membranes in the presence of PEG and trehalose
    Soft Matter (IF 3.709) Pub Date : 2018-10-16
    Samy Ayoubi, Peter Karl Friedrich Schinkel, Melanie Berghaus, Marius Herzog, Roland Winter

    We studied the interaction of lipid membranes with the disaccharide trehalose (TRH), which is known to stabilize biomembranes against various environmental stress factors. Generally, stress factors include low/high temperature, shear, osmotic and hydrostatic pressure. Small-angle X-ray-scattering was applied in combination with fluorescence spectroscopy and calorimetric measurements to get insights into the influence of trehalose on the supramolecular structure, hydration level, elastic and thermodynamic properties as well as phase behavior of the model biomembrane DMPC, covering a large region of the temperature, osmotic and hydrostatic pressure phase space. We observed distinct effects of trehalose on the topology of the lipid's supramolecular structure. Trehalose, unlike osmotic pressure induced by polyethylene glycol, leads to a decrease of lamellar order and a swelling of multilamellar vesicles, which is attributable to direct interactions between the membrane and trehalose. Our results revealed a distinct biphasic concentration dependence of the observed effects of trehalose. While trehalose intercalates between the polar head groups at low concentrations, the effects after saturation are dominated by the exclusion of trehalose from the membrane surface.

    更新日期:2018-10-17
  • Meso-scale topological cues influence extracellular matrix production in a large deformation, elastomeric scaffold model
    Soft Matter (IF 3.709) Pub Date : 2018-10-16
    Antonio D'Amore, Gabriele Nasello, Samuel K. Luketich, Dima Denisenko, Daniel L. Jacobs, Richard Hoff, Gregory Gibson, Alessandro Bruno, Manuela Teresa, WilliamR R. Wagner

    Physical cues are as decisive factors in extracellular matrix (ECM) formation and elaboration. Their transduction across scale lengths is an inherently symbiotic phenomenon that while influencing ECM fate is also mediated by the ECM structure itself. This study investigates the possibility of enhancing ECM elaboration by topological cues that, while not modifying the subtrate macro scale mechanics, can affect the meso-scale strain range acting on cells incorporated within the scaffold. Vascular smooth muscle cell micro-integrated, electrospun scaffolds were fabricated with comparable macroscopic biaxial mechanical response, but different meso-scale topology. Seeded scaffolds were conditioned on a stretch bioreactor and exposed to large strain deformations. Samples were processed to evaluate ECM quantity and quality via: biochemical assay, qualitative and quantitative histological assessment and multi-photon analysis. Experimental evaluation was coupled to a numerical model that elucidated the relationship between the scaffold micro-architecture and the strain acting on the cells. Results showed an higher amount of ECM formation for the scaffold type characterized by lowest fiber intersection density. The numerical model simulations associated this result with the differences found for the change in cell nuclear aspect ratio and showed that given comparable macro scale mechanics, a difference in material topology created significant differences in cell-scaffold meso-scale deformations. These findings reaffirmed the role of cell shape in ECM formation and introduced a novel notion for the engineering of cardiac tissue where biomaterial structure can be designed to both mimick the organ level mechanics of a specific tissue of interest and elicit a desirable cellular response.

    更新日期:2018-10-17
  • Formation of cluster crystals in an ultra-soft potential model on a spherical surface
    Soft Matter (IF 3.709) Pub Date : 2018-10-16
    Stefano Franzini, Luciano Reatto, Davide Pini

    We investigate the formation of cluster crystals with multiply occupied lattice sites on a spherical surface in systems of ultra-soft particles interacting via repulsive, bounded pair potentials. Not all interactions of this kind lead to clustering: we generalize the criterion devised in C. N. Likos et al., Phys. Rev. E, 2001, 63, 031206 to spherical systems in order to distinguish between cluster-forming systems and fluids which display reentrant melting. We use both DFT and Monte Carlo simulations to characterize the behavior of the system, and obtain semi-quantitative agreement between the two. We find that the number of clusters is determined by the ratio between the size σ of the ultra-soft particles and the radius R of the sphere in such a way that each stable configuration spans a certain interval of σ/R. Furthermore, we study the effect of topological frustration on the system due to the sphere curvature by comparing the properties of disclinations, i.e., clusters with fewer than six neighbors, and non-defective clusters. Disclinations are shown to be less stable, contain fewer particles, and be closer to their neighbors than other lattice points: these properties are explained on the basis of geometric and energetic considerations.

    更新日期:2018-10-17
  • High-precision acoustic measurements of the non-linear dilatational elasticity of phospholipid coated monodisperse microbubbles
    Soft Matter (IF 3.709) Pub Date : 2018-10-16
    Tim Segers, Emmanuel Gaud, Michel Versluis, Peter Frinking

    The acoustic response of phospholipid-coated microbubble ultrasound contrast agents (UCA) is dramatically affected by their stabilizing shell. The interfacial shell elasticity increases the resonance frequency, the shell viscosity increases damping, and the nonlinear shell viscoelasticity increases the generation of harmonic echoes that are routinely used in contrast-enhanced ultrasound imaging. To date, the surface area-dependent interfacial properties of the phospholipid coating have never been measured due to the extremely short time scales of the MHz frequencies at which the microscopic bubbles are driven. Here, we present high-precision acoustic measurements of the dilatational nonlinear viscoelastic shell properties of phospholipid-coated microbubbles. These highly accurate measurements are now accessible for the first time by tuning the surface dilatation, that is, the lipid packing density, of well-controlled monodisperse bubble suspensions through the ambient pressure. Upon compression, the shell elasticity of bubbles coated with DPPC and DPPE-PEG5000 was found to increase up to an elasticity of 0.6 N/m after which the monolayer collapses and the elasticity vanishes. During bubble expansion, the elasticity drops monotonically in two stages, first to an elasticity of 0.35 N/m, and then more rapidly to zero. Integration of the elasticity vs. surface area curves showed that, indeed, a phospholipid-coated microbubble is in a tensionless state upon compression, and that it reaches the interfacial tension of the surrounding medium upon expansion. The measurements presented in this work reveal the detailed features of the nonlinear dilatational shell behavior of micron-sized lipid-coated bubbles.

    更新日期:2018-10-17
  • Effect of Macromolecular Architecture on the Self-Assembly Behavior of Copolymers in a Selective Polymer Host
    Soft Matter (IF 3.709) Pub Date : 2018-10-16
    Petra Bacova, Romanos Foskinis, Emmanouil Glynos, Anastassia Rissanou, Spiros H Anastasiadis, Vagelis Harmandaris

    We present a detailed simulation study of the structural and dynamical behavior of star-shaped mikto-arm (polystyrene)8(poly(ethylene oxide))8, (PS)8(PEO)8, copolymers with eight arms of each type, versus that of a linear polystyrene-block-poly(ethylene oxide), PS-b-PEO, diblock, in a selective homopolymer host. Both copolymers are blended at the same weight fraction 33% with an oligomeric PEO host. We use atomistic molecular dynamics simulations to account for the molecular interactions present in the blends and to study quantitatively the dynamical and structural properties of these systems. The presence of the selective oligomeric PEO host leads to the formation of complex self-assembled structures. While cylindrical structures are formed in the case of linear diblock copolymers, mikto-arm star copolymers form percolated interconnected assemblies within the PEO host. The cylindrical objects formed by the linear diblock copolymers exhibit a higher degree of compactness and a weaker temperature dependence than the percolated network formed by their star-shaped analogues. The dynamics is governed primarily by the local structural heterogeneity, i.e., the environment around a segment, which is determined by the interaction between the different components, the macromolecular architecture of the copolymer as well as the associated geometrical constrains. Our data further stress the fact that the structural and dynamical properties in these blends may be controlled/tuned by the macromolecular architecture of the copolymer and/or by adjusting the temperature.

    更新日期:2018-10-17
  • Resolving the Structural Interactions between Antimicrobial Peptides and Lipid Membranes using Small-angle Scattering Methods: the case of Indolicidin
    Soft Matter (IF 3.709) Pub Date : 2018-10-16
    Josefine Eilsø Nielsen, Victoria Ariel Bjørnestad, Reidar Lund

    Using Small Angle X-ray and Neutron Scattering (SAXS/SANS) and detailed theoretical modelling we have elucidated the structure of the antimicrobial peptide, indolicidin and the interaction with model lipid membranes with different anionic lipid compositions mimicking typical charge densities found in the cytoplasmic membrane of bacteria. First, we show that indolicidin displays a predominantly disordered, random chain conformation in solution but with a small fraction (≈1%) of fiber-like nanostructures that are not dissolved at higher temperatures. The peptide is shown to strongly interact with the membranes at all charge densities without significantly perturbing the lipid bilayer structure. Instead, the results show that indolicidin inserts into the outer leaflet of the lipid vesicles causing decrease in the order of the lipids locally. This is supported by a change in the melting point of the lipids upon addition of the peptide, as seen by Differential Scanning Calorimetry experiments. The peptide is not seen to affect the thickness of the membrane or form distinct structural pores in the membrane at physiological relevant concentrations as has been suggested as the mode of action in other articles. Finally, we show by using sophisticated contrast variation SANS that the peptide does not alter the lateral distribution of anionic lipids in the membrane. The results show that the structural aspects of the mode of action of antimicrobial peptides can be elucidated in detail using SAS techniques and liposomes as model systems.

    更新日期:2018-10-17
  • An Analytic Model of Two-Level Compressive Buckling with Applications in the Assembly of Free-Standing 3D Mesostructures
    Soft Matter (IF 3.709) Pub Date : 2018-10-16
    Yan Shi, Pengyu Pei, Xu Cheng, Zheng Yan, Mengdi Han, Zhi Li, Cun-Fa Gao, John A. Rogers, Yonggang Huang, Yihui Zhang

    Recently developed methods for mechanically-guided assembly exploit stress release in prestretched elastomeric substrates to guide the controlled formation of complex three-dimensional (3D) mesostructures in advanced functional materials and integrated electronic devices. The techniques of interfacial photopolymerization allow for realization of such 3D mesostructures in free-standing forms, separated from their elastomeric substrate, via formation of an integrated base layer. Theoretical models for the complex modes of deformation associated with this scheme are essential in the optimal design of the process parameters. Here, we present an analytic finite-deformation model of an isolated double-ribbon structure to describe the buckling process and morphology change of the assembled mesostructures upon removal of the substrate. As validated by finite element analyses (FEA), this analytic model can accurately predict the profiles of the double-ribbon structure with a range of different design parameters. We further illustrate the extension of this model to the analyses of 3D mesostructures with different geometries. Inspired by analytic results for flexible base structures, combined experimental results and numerical simulations demonstrate that mechanical interactions between the two different layers can be leveraged to achieve hierarchical assembly of 3D mesostructures. These findings could be useful in further advances in designs of free-standing 3D mesostructures based on mechanically-guided assembly.

    更新日期:2018-10-17
  • Fine-tuning the effect of π–π interactions on the stability of the NTB phase
    Soft Matter (IF 3.709) Pub Date : 2018-10-09
    Anamarija Knežević, Marin Sapunar, Anđela Buljan, Irena Dokli, Zdenko Hameršak, Darko Kontrec, Andreja Lesac
    更新日期:2018-10-17
Some contents have been Reproduced with permission of the American Chemical Society.
Some contents have been Reproduced by permission of The Royal Society of Chemistry.
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