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  • Facile synthesis of the nitrogen and sulfur co-doped carbon dots for multiple sensing capacities: Alkaline fluorescence enhancement effect, temperature sensing, and selective detection of Fe3+ ions
    New J. Chem. (IF 3.269) Pub Date : 2018-06-23
    Guannan Liu, Shan Li, Ming Cheng, Lianjing Zhao, Bo Zhang, Yuan Gao, Yan Xu, Fangmeng Liu, Geyu Lu

    In this article, we prepared the nitrogen and sulphur co-doped carbon dots (C-dots) via one-pot facile hydrothermal method using the methionine and ethylenediamine as the precursors. TEM, HRTEM, FTIR, and XPS were used to characterize the morphology and surface molecular structures of the N, S co-doped C-dots. The obtained C-dots manifested good-solubility and attractive fluorescence properties. The C-dots responded rapidly towards Fe3+ ions, and can be used as a fluorescent probe for Fe3+ ions detection. In addition, the C-dots also exhibited temperature-sensitive and pH-sensitive properties, which possessed good temperature recoverability and significantly enhanced fluorescence under alkaline conditions. These excellent characteristics promise extensive potential applications for C-dots in physiological and environmental

    更新日期:2018-06-25
  • Tungstic acid-functionalized MCM-41 as a novel mesoporous solid acid catalyst for one-pot synthesis of new pyrrolo[2,1-a]isoquinolines
    New J. Chem. (IF 3.269) Pub Date : 2018-06-22
    Bahador Karami, Mahnaz Farahi, Sedigheh Akrami, Dawood Elhamifar

    Tungstic acid-functionalized MCM-41 (MCM-41-HWO4) was prepared, characterized and applied as a reusable mesoporous catalyst for the one-pot synthesis of new pyrrolo[2,1-a]isoquinoline derivatives. The characterization was performed by using FT-IR, X-ray diffraction patterns (XRD), scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDX). Pyrrolo[2,1-a]isoquinolines was prepared in the presence of this novel MCM-41 based nanocatalyst via the four-component reaction of arylaldehydes, meldrum's acid, isoquinoline and alkyl isocyanides. MCM-41-HWO4 is a low-cost and nontoxic heterogeneous catalyst which provides a green reaction condition. Additionally, it can be reused for many times without significant loss of its activity.

    更新日期:2018-06-22
  • “Ship in bottle” Porph@MOMs as highly efficient catalysts for selective controllable oxidation and insights into different mechanism in heterogeneous and homogeneous environment
    New J. Chem. (IF 3.269) Pub Date : 2018-06-22
    Mahdie Saghian, Saeed Dehghanpour, Massoomeh Sharbatdaran

    In the present work, three “ship in bottle” Porph@MOMs are reported as biomimetic oxidation catalysts for different reactions. The frameworks are constructed from trimesic acid and metal ions (M= Fe, Co and Mn) in which tetra(N-methyl-4-pyridyl) porphyrin (MTMPyP) is encapsulated within the cavities. Additionally, the catalytic activity of the corresponding homogeneous compounds, FeTMPyP, CoTMPyP and MnTMPyP, and the frameworks without porphyrins within the cavities were investigated in the foregoing oxidation reactions. The prepared 3D porous structures have the ability to control selectivity toward the desired product. Furthermore, they are capable of acting as effective peroxidase mimics, which successfully catalyze oxidation of diverse olefins as well as hydrocarbons using TBHP as oxidant. The heterogeneous catalysts significantly enhance conversion in contrast to their corresponding homogeneous systems. Remarkably, an insight into the catalyst behavior was gained from the proposed mechanism based on the reversal of selectivity. Investigation of the stability and reusability of the catalysts revealed the heterogeneity character of the catalyst with no desorption during the course of oxidation reactions. High yields, clean reactions, high thermal stability and reusability of catalysts, make them good candidates for heterogeneous catalyst in various oxidation reactions.

    更新日期:2018-06-22
  • Highly branched amine-functionalized p-sulfonatocalix[4]arene decorated with human plasma proteins as a smart, targeted, and stealth nano-vehicle for combination chemotherapy of MCF7 cells'
    New J. Chem. (IF 3.269) Pub Date : 2018-06-22
    Mahdi Rahimi, ramin karimian, Elmira Mostafidi, Ehsan Bahojb Noruzi, Sepehr Taghizadeh, Behrooz Shokouhi, Hossein Samadi Samadi Kafil

    Nanotechnology has recently emerged as a promising field in biomedical applications especially in the targeted delivery of drugs to tumors. Besides, combination chemotherapy is common in cancer treatment and rapidly evolving. Therefore, the successfully delivery of chemotherapeutic drugs to the targeted cancer is a big challenge. In this study, we are endeavouring to develop a nano-vehicle, based on highly branched amine-functionalized p-sulfonatocalix[4]arene as a dual-drugs carrier for co-delivery of DOX and MTX to the MCF7 breast cancer cells with targeting and synergistic effects. After the synthesis and preparation of the nano-vehicle, its structural characterizations were also taken (FTIR, AFM, VSM, SEM, EDX, XRD, DLS, zeta potential analysis). Drug loading and release studies of prepared drugs-loaded nano-vehicle were studied to optimize the formulation. The designed platform has targeting and pH-triggered drug release capabilities to improve the therapeutic index of DOX and MTX. Hemolysis assay results were proved that the nano-vehicle has high blood compatibility even at the high dosage treatment. Protein-particle interaction of nano-vehicle in human blood circulation systems via SDS-PAGE assay was simulated and the results indicated that a series of proteins were attached to the surface of nano-vehicle. This feature gives stealth property to the nano-vehicle in blood circulation system. The cellular uptake by flow-cytometry and fluorescent microscopy were validated that the human plasma proteins attached to the nano-vehicle surface cause high internalization capability into the cells due to the presence of some protein receptors on the surface of cancer cells which improve the tumor cell targeting property. MTT assay and DAPI staining were also performed to show viability and DNA fragmentation of treated cells. All results validated each other and confirmed that our designed nano-vehicle is useful for targeted and combination drug delivery systems with stealth property.

    更新日期:2018-06-22
  • The influence of oxidative debris on fragmentation and laser desorption/ionization process of graphene oxide derivatives
    New J. Chem. (IF 3.269) Pub Date : 2018-06-22
    Yu Rim Hong, Jieon Lee, Bon-Cheol Ku, Kyungtae Kang, Seunghyun Lee, Seongwoo Ryu, Young-Kwan Kim

    Effect of oxidative debris (OD) on fragmentation behavior and laser desorption/ionization (LDI) process of graphene oxide (GO) derivatives was systematically investigated to explore the potential of LDI time-of-flight mass spectrometry (LDI-TOF-MS) as a chracterization tool for their chemical structure and photochemiocal property. Based on the results, we found fragmentation patterns and LDI property of GO derivatives were highly affected by the OD adsorbed on their surface. Our findings suggest LDI-TOF-MS can be an useful analytical tool for the chemical structure and photochemical property of GO derivatives.

    更新日期:2018-06-22
  • Aerobic oxidative amidation of alkynes using titanium oxide encapsulated cuprous iodide nanoparticles (CuI@TiO2)
    New J. Chem. (IF 3.269) Pub Date : 2018-06-14
    Pratip Kumar Dutta, Basabbijayi Dhar, Subhabrata Sen
    更新日期:2018-06-22
  • Solvent effects on the electrical and magnetic spectroscopic properties of azo-enaminone derivatives in methanol and in water
    New J. Chem. (IF 3.269) Pub Date : 2018-06-12
    Leonardo Bruno Assis Oliveira, Luizmar Adriano Júnior, Guilherme Colherinhas
    更新日期:2018-06-22
  • Application of chiral bi- and tetra-dentate bispidine-derived ligands in the copper(II)-catalyzed asymmetric Henry reaction
    New J. Chem. (IF 3.269) Pub Date : 2018-06-12
    Arianna Rossetti, Stefano Landoni, Fiorella Meneghetti, Carlo Castellano, Matteo Mori, Greta Colombo Dugoni, Alessandro Sacchetti
    更新日期:2018-06-22
  • Pyrrole N-alkyl side chain effects on the properties of pyrrolo[3,4-c]pyrrole-1,3-dione-based polymers for polymer solar cells
    New J. Chem. (IF 3.269) Pub Date : 2018-06-08
    Vellaiappillai Tamilavan, Jihoon Lee, Dal Yong Lee, Rajalingam Agneeswari, Yun Kyung Jung, Youngeup Jin, Jung Hyun Jeong, Myung Ho Hyun, Sung Heum Park
    更新日期:2018-06-22
  • 更新日期:2018-06-22
  • 更新日期:2018-06-22
  • Pyrimidine-containing β-iminoenolate difluoroboron complexes acting as non-traditional π-gelators and mechanofluorochromic dyes
    New J. Chem. (IF 3.269) Pub Date : 2018-06-22
    Wenhua Mi, Zhiyu Qu, Jingbo Sun, Fushuang Zhang, Lu Zhai, Jinyu Zhao, Kaiqi Ye

    New pyrimidine-containing β-iminoenolate CPPA and TCPPA and their difluoroboron complexes CPPAB and TCPPAB were synthesized. It was found that TCPPA and TCPPAB bearing tert-butyl could self-assemble into organogels in methylcyclohexane/1,4-dioxane and other solvents, but no organogel could be formed from CPPA and CPPAB without tert-butyl. It suggested that tert-butyl played a key role in the gel formation. It should be noted that no traditional gelation moiety was involved in the fully conjugated TCPPA and TCPPAB, and the π-π interactions were found to be the main driving forces for the gelation. Moreover, the xerogel-based film of TCPPAB emitting strong yellow light could be used as “turn-off” fluorescent sensor to detect TFA vapor with the decay time and detection limit of 0.8 s and 260 ppb. On the other hand, the β-iminoenolate difluoroboron complexes CPPAB and TCPPAB exhibited reversible mechanofluorochromic behavior. The as-synthesized crystals of TCPPAB emitted strong green light and could be transformed into the powders emitting orange light upon grinding, and the fluorescence could recover when the ground powders were fumed with CH2Cl2. Such reversible MFC processes for TCPPAB were suggested to be resulted from the transformation between crystalline and amorphous states. Herein, we provided a strategy for designing new multi-stimuli-responsive soft materials.

    更新日期:2018-06-22
  • A novel 6-quinoxalinamine-based fluorescent probe for real-time detection of palladium (II) ion in pure water and bio-imaging
    New J. Chem. (IF 3.269) Pub Date : 2018-06-22
    Chuanliang Che, Xiangzhu Chen, Hongmei Wang, Jia-Qi Li, Yumei Xiao, Bin Fu, Zhaohai Qin

    A novel quinoxalinamine-containing fluorescent probe (LK) was designed and synthesized based on coordination for real-time detection of Pd2+. LK was easily obtained in high yield by the Suzuki cross-coupling reaction. The quinoxaline group provides the sensor LK with good water-solubility which is important for monitoring in biological systems. The probe possessed large Stokes shifts and excellent selectivity for detecting Pd2+ on various potential interfering metal ions. The detection limit (22 nM) was far lower than the criterion of the World Health Organization in drinking water. Moreover, LK displayed high sensitiveness for identification of Pd2+ in real water samples. More importantly, the sensor LK succeeded in imaging detection of Pd2+ in living cells with good membrane permeability and low toxicity.

    更新日期:2018-06-22
  • Detection of gaseous amines with a fluorescent film based on a perylene bisimide-functionalized copolymer
    New J. Chem. (IF 3.269) Pub Date : 2018-06-22
    Jinling Zhang, Ke Liu, Gang Wang, Congdi Shang, Haonan Peng, Taihong Liu, Yu Fang

    A fluorescent film sensor based on perylene bisimide (PBI)-functionalized copolymer for the fast and selective detection of aniline vapor was fabricated. In this work, the common H-aggregation of the PBI units was obviously hindered by using numerous hydroxy-ethyl side chains as a spatial scaffold. Sensing performance studies demonstrated that the fluorescence of the film was instantaneously quenched by ppb-level volatile amines with excellent reversibility and reproducibility. The response time for aniline vapor was found to be less than 1 s. The high surface area, porosity of the silica gel substrate and hydrogen bonding interactions may assist the high sensitivity and fast response of the film towards aniline. Furthermore, the massive fluorescence intensity data of the sensing film when exposed to low concentrations and continuous flow of amine vapors were collected in a home-made sensing platform. In addition, response feature extraction about the kinetic sorption and desorption information show promising potential of the film in real applications. This work has expanded the applications of PBI-based materials in fluorescent sensing of toxic compounds, particularly amine vapors.

    更新日期:2018-06-22
  • Deep oxidative desulfurization of dibenzothiophene with {Mo132} nanoball supported on activated carbon as efficient catalyst at room temperature
    New J. Chem. (IF 3.269) Pub Date : 2018-06-21
    Ali Mojaverian Kermani, Ali Ahmadpour, Tahereh Rohani Bastami, Mahboube Ghahramaninezhah

    In this paper, the Keplerate nanoball iso-polyoxomolybdate {Mo132} supported on activated carbon (AC) has been synthesized and evaluated as new, green and cost-effective catalyst in oxidative desulfurization of the model fuel containing dibenzothiophene (DBT). The {Mo132}/AC catalysts, which were prepared with various {Mo132} contents, were characterized by FT-IR, XRD, SEM, EDX, ICP-OES, H2-TPR and nitrogen adsorption/desorption isotherms. Experimental evaluations showed that the catalyst was highly efficient in the removal of DBT using hydrogen peroxide (H2O2) as the oxidant, which could result a sulfur removal of up to 99.5% (or even more than that) under optimum reaction conditions. The factors affecting the process including catalyst dosage, temperature, O/S molar ratio, reaction time and initial sulfur content were evaluated, and optimum operating conditions were determined. In addition, the new catalyst was recoverable and the recovered {Mo132}/AC demonstrated relatively similar catalytic activity as the fresh one. According to the results of GC-MS analysis, sulfone species was found to be the only product of DBT oxidation by H2O2 over {Mo132}/AC. Moreover, a mechanism for the oxidative desulfurization of DBT by the new catalyst was proposed. The present study suggested that the {Mo132}/AC composite could be used as an efficient catalyst for deep oxidative desulfurization and removal of refractory sulfur compounds in fossil fuels.

    更新日期:2018-06-22
  • The Baylis-Hillman reaction: a new continent in organic chemistry: Our philosophy, vision and over three decades of research
    New J. Chem. (IF 3.269) Pub Date : 2018-06-21
    Deevi Basavaiah, Ram Tilak Naganaboina

    This review describes, in brief, the philosophy, vision and long research experience of the senior author (DB) in the area of Baylis-Hillman (BH) [also known as Morita-Baylis-Hillman (MBH)] reaction. It presents a clear picture how the senior author (DB) has, i) uncovered BH reaction which was actually buried in the literature, ii) recognized its high level potential, and iii) initiated a major research program, nurtured, elegantly contributed and popularized it from concealed patent level to the present levels of powerful C-C bond forming reaction attaining the status of a new continent in organic chemistry. While presenting mostly the contributions of our research group this brief review also describes some of the important and relevant contributions from other research groups. This article clearly demonstrates the power of molecules containing three proximal functional groups and highlights the unending opportunities, and challenges offered by this fascinating reaction.

    更新日期:2018-06-22
  • Biomimetic Synthesis of Urchin-like CuO/ZnO Nanocomposite with Excellent Photocatalytic Activity
    New J. Chem. (IF 3.269) Pub Date : 2018-06-21
    Hui Fang, Yanxia Guo, Tong Wu, Yuping Liu

    Novel urchin-like CuO/ZnO nanocomposite was synthesized using glutamine (Gln) as growth regulator by a biomimetic hydrothermal process with subsequent calcination. The urchin-like hierarchical structure is assembled by closely packed and inter-connected nanoparticles with sizes of 20-50 nm. Gln plays key roles in phase composition and morphology due to its competitive coordination with Cu ions and Zn ions. Compared with the prepared ZnO/CuO nanosheets without Gln and pure ZnO with Gln, the urchin-like CuO/ZnO nanocomposite exhibited the most remarkable performance for degradation of methylene blue dye under UV irradiation. On basis of the photocatalytic mechanism of urchin-like CuO/ZnO nanocomposite, a direct relationship among the morphology, phase composition and photocatalytic property is established.

    更新日期:2018-06-22
  • B,N,S tri-doped Reduced Graphite Oxide-Cobalt Oxide Composite: A Bifunctional Electrocatalyst for Enhanced Oxygen Reduction and Oxygen Evolution Reaction
    New J. Chem. (IF 3.269) Pub Date : 2018-06-21
    Sagar Ingavale, Indrajit Patil, Haridas Babaso Parse, Niranjan S Ramgir, Bhalchandra Anand Kakade, Anita Swami

    In the present study, we followed a unique approach to synthesize a nanocomposite of B,N,S tri-doped graphite oxide and cobalt oxide. Initially, B,N,S tri-doped carbon quantum dots were prepared by hydrothermal method using boric acid and L-cysteine as precursors, which were further immobilized on graphite oxide in presence of cobalt precursor to get nanocomposite of cobalt oxide and B,N,S tri-doped graphite oxide. The crystal structure and morphology of the BNS/rGO-Co nanocomposite were studied by X-ray diffraction (XRD) and scanning electron microscopy (SEM) imaging respectively. The electrochemical study indicated a substantially higher electrocatalytic activity of the catalyst with onset potential (Eonset) of 0.87 V vs. RHE and current density (JL) of 4.4 mA/cm2¬¬¬ at 1600 rpm in alkaline condition. Additionally, rotating ring disc electrode (RRDE) measurements confirmed a single step ~4 electron transfer pathway similar to Pt/C catalyst. Interestingly, BNS/rGO-Co nanocomposite shows enhanced stability (up to 5000 cycles under similar conditions) and high tolerance to methanol crossover effect, when compared to the state-of-the-art Pt/C catalyst. Concomitantly, the catalyst also exhibits remarkable oxygen evolution reaction activity. Such a remarkable electrocatalytic activity of BNS/rGO-Co nanocomposite over its NS-bi-doped counterpart is due to the importance of boron synergy with N and S sites in the rGO and also due to the presence of cobalt oxide interface for better conversion.

    更新日期:2018-06-22
  • A facile 2H-chromene dimerization through an ortho-quinone methide intermediate catalyzed by a sulfonyl derived MIL-101 MOF
    New J. Chem. (IF 3.269) Pub Date : 2018-06-21
    Xin Du, Xiujuan Li, Houliang Tang, Wenyu Wang, Daniele Ramella, Yi Luan

    A MIL-101-SO3H MOF was synthesized using commercially available materials. The as-synthesized MIL-101-SO3H was characterized by SEM, XRD, FTIR, BET and TGA. An efficient and diastereoselective homo-dimerization of 2H-chromenes catalysis was achieved using the sulfonyl derived MIL-101 MOF as a catalyst. Benzopyranobenzopyran polycyclic structure were generated in high yield and diastereoselectivity under mild catalytic reaction conditions. Furthermore, a regio- isomer was observed when 2H-chromene bears different substitution group, furnished chromeno[2,3-b]chromene dimer in high yield and good diastereoselectivity. A mechanism is proposed with a tandem rearrangement/hetero-Diels-Alder reaction sequence is supported by evidence. In addition, the acid MIL-101 MOF catalyst can be recycled ten times without compromising the yield and selectivity.

    更新日期:2018-06-22
  • Synthesis and gas permselectivity of CuBTC–GO–PVDF mixed matrix membranes
    New J. Chem. (IF 3.269) Pub Date : 2018-06-21
    Elahe Ahmadi Feijani, Hossein Mahdavi, Ahmad Tavassoli
    更新日期:2018-06-22
  • AIE+ESIPT based red fluorescent aggregates for visualization of latent fingerprints
    New J. Chem. (IF 3.269) Pub Date : 2018-06-21
    Harminder Singh, Rashmi Sharma, Gaurav Bhargava, Subodh Kumar, Prabhpreet Singh

    Fluorescent molecules are extensively employed in (bio)sensing and bioimaging but their applications in visualization of fingerprints are less reported due to their inherited aggregation-caused quenching (ACQ) mechanism in solid state (aggregated form). DPSA undergoes self-assembly to form aggregates with rod-like structures in 90% H2O:CH3CN mixture evident from dynamic light scattering (DLS) and scanning electron microscopic (SEM) techniques. Self-assembled diphenylpyrimidinone derivative (DPSA) showed aggregation-induced emission (~24 fold) in >90% H2O:CH3CN mixture with orange-red fluorescence (λmax 564 nm). The red fluorescent aggregates of DPSA show applications in visualization of latent fingerprints on aluminium, stainless steel and metal currency coin substrates. In addition, we attempted to establish the individuality of three subjects based on information gathered at level one (pattern of arch, loop or whorl) and level two (minutae details of dots, bifurcation, ridge ending, core and delta).

    更新日期:2018-06-22
  • New ionic liquids based on systemic acquired resistance inducers combined with the phytotoxicity reducing cholinium cation
    New J. Chem. (IF 3.269) Pub Date : 2018-06-21
    R. Kukawka, P. Czerwoniec, P. Lewandowski, H. Pospieszny, M. Smiglak
    更新日期:2018-06-22
  • Donor-π-Acceptor (D-π-A) Dyad for ratiometric detection of Hg2+ and PPi
    New J. Chem. (IF 3.269) Pub Date : 2018-06-21
    Richa Rani, Gulshan Sharma, Kamal Deep Paul, Vijay Luxami

    A donor-π-acceptor (D-π-A) dyad 1 has been successfully synthesized by linking phenanthrenequinone as an electron donor unit and anthraquinone as an electron acceptor unit through a phenyl ring. Dyad 1 exhibits the intramolecular charge transfer and acts as a key phenomenon for the detection of Hg2+ and of pyrophosphate ion (P2O74-, PPi) in the semi-aqueous medium. The dyad 1 exhibits absorption peaks at 430, 370, and 337 nm and an emission peak at 530 nm (λex = 430 nm). Dyad 1 exhibits new absorption peak at 390 nm ratiometrically along with emission quenching in the presence of Hg2+ ions while the presence of PPi results in drastic ratiometric changes in absorption and emission spectra with a new peak at 495 nm and 620 nm, respectively. The quantum yield of the dyad 1 on complexation with PPi has also been increased from 0.1 (free dyad) to 0.69 (dyad 1.PPi). The lowest detection limits for Hg2+ and PPi found to be 31 nM and 46.5 nM, respectively. DFT calculations have been performed to develop the mode of a mechanism for PPi and Hg2+ ions binding with dyad 1.

    更新日期:2018-06-22
  • In-Situ Spectroscopic Studies for One-Pot Synthesis of Composition-Controlled Cu-Ni Nanowires with Enhanced Catalytic Activity
    New J. Chem. (IF 3.269) Pub Date : 2018-06-21
    Masanao Ishijima, Jhon Lehman Cuya Huaman, Shun Yokoyama, Kozo Shinoda, Masahito Uchikoshi, Hiroshi Miyamura, Balachandran Jeyadevan

    Here, an alcohol reduction method for preparing composition controlled Cu-Ni nanowires(NWs) in high yields is proposed through the selection of an appropriate combination of the metallic precursors, alcohol type and, surfactant. Also, the mechanism of NW formation was elucidated using morphological, structural and in-situ UV-Visible and X-ray absorption spectroscopic measurements. In the initial stages of the reaction, the metallic precursors coordinated with amine groups to form complexes. When the temperature of the reactants was increased, Ni formed hydroxide structures such as layered Ni(OH)2, while Cu was partially reduced to Cu+ and coordinated with Cl- ions. At higher temperatures, Ni2+ ions were reduced to metallic Ni before the formation of metallic Cu. Subsequently, metallic Ni seeds donated electrons to Cu+ through a galvanic reaction forming Cu seeds. Then, the unidirectional growth progressed due to etching of Cu seeds by chloride ions and the preferential adsorption of the capping agent on [100] planes of Cu. After the consumption of Cu ions to form metallic Cu NWs, Ni ions that remained in the solution were reduced and deposited on Cu NW surface. The average diameter and length of Ni-coated Cu NWs were 70 nm, and 30 μm, respectively and the composition of Ni was variable between 2 and 80 wt. %. The catalytic activity of the Cu-Ni NWs was studied through the decoloration reaction of methylene blue and nanowires with 58 wt. % Ni was the most active. These results could be ascribed to the efficient interaction between Cu core and Ni sheath.

    更新日期:2018-06-22
  • 更新日期:2018-06-22
  • Hydrogen bonded networks based on hexarhenium(III) chalcocyanide cluster complexes: structural and photophysical characterization
    New J. Chem. (IF 3.269) Pub Date : 2018-06-21
    Alexandra Ledneva, Sylvie Ferlay, Nikolay G. Naumov, Matteo Mauro, Stéphane Cordier, Nathalie Kyritsakas, Mir Wais Hosseini
    更新日期:2018-06-22
  • Hydrothermal synthesis of MoS2 and WS2 nanoparticles for high-performance supercapacitor applications
    New J. Chem. (IF 3.269) Pub Date : 2018-06-21
    Chandu Nagaraju, Chandu V. V. Muralee Gopi, Jin-Woo Ahn, Hee-Je Kim

    Nanoparticle-feature MoS2 and WS2 have been synthesized by a facile one-step hydrothermal approach and their application as electroactive materials for high-performance supercapacitors have been investigated. The electrochemical results of MoS2 electrode exhibit a higher specific capacitance (Cs) of 1531.2 F g-1 at 5 mA cm-2 with good cycling stability (up to 81.6% retention over 3000 cycles). The WS2 electrode delivers a high Cs of 1439.5 F g-1 at 5 mA cm-2 and excellent cycling stability of 77.4% retention after 3000 cycles. The outstanding performance of the MoS2 and WS2 candidates indicates their potential applications in the next-generation high-performance supercapacitors applications.

    更新日期:2018-06-22
  • Near-Infrared-Excitable Perovskite Quantum Dots via Coupling with Upconversion Nanoparticles for Dual-Model Anti-Counterfeiting
    New J. Chem. (IF 3.269) Pub Date : 2018-06-21
    Mengnan Rao, Jie Fu, Xing Wen, Bing Sun, Jing Wu, Xuan-He Liu, Xueling Dong

    Here, we report a design of upconversion nanoparticles-coupled perovskite quantum dots that are full-color tunable under a single near-infrared (NIR) excitation. Consequently, we demonstrate the utility of these hybrid nanomaterials for printable, NIR-excitable, dual-model anti-counterfeiting.

    更新日期:2018-06-22
  • A new nanosensor for the chiral recognition of cysteine enantiomers based on gold nanorods
    New J. Chem. (IF 3.269) Pub Date : 2018-06-21
    Ruijun Li, Chang-Long Zhu, Wang Li, Xintong Zhang, Yibing Ji

    An easy-operation, celerity and high selectivity method, which applied unmodified Gold nanorods (GNRs) as a chiral nanosensor for the chiral recognition of cysteine (Cys) enantiomers, has been developed in this work. Under the optimized conditions, L-Cys caused the GNRs aggregation, and the absorbance decrease of GNRs at the wavelength of 650 nm was 0.601. However, the GNRs were almost monodispersion and the absorbance decrease was only 0.289 for D-Cys. Combined assay process with the optical rotation of GNRs, the chiral recognition phenomenon could be assigned that L-Cys induced the end-to-end assembly of GNRs through crosslinking agent Cu 2+ ions. The detection limit of this method for L-Cys was 0.325 μM. The relative standard deviation (RSD) was 1.5% for trace L-Cys, which indicated that the method presented good precision for the analysis of trace L-Cys in solution samples. Futhermore, we demonstrated that the nanosensor possessed a high selectivity for the chiral recognition of Cys enantiomers. The response of GNRs (△ALD) to Cys enantiomers was 7.8 times to Tryptophan (Try) enantiomers, and 9.2 times to Phenylalanine (Phe) enantiomers. In our perception, the assay showed new opportunities for efficient enantiosensing strategies.

    更新日期:2018-06-22
  • Sensitive detection of dengue virus NS1 by highly stable affibody-functionalized gold nanoparticles
    New J. Chem. (IF 3.269) Pub Date : 2018-06-21
    Sunghyun Kim, Jinho Bang, Heesun Park, Won Il Choi, Dae-Kyung Sung, Jin Hyung Lee, Kuen Yong Lee

    Infection with dengue virus (DENV) is a serious health issue that causes severe dengue fever and occasionally lethal complications, such as dengue hemorrhagic fever. Therefore, rapid and sensitive DENV detection is important to reduce morbidity and mortality. Here, we screened dengue NS1-specific affibodies and developed highly stable anti-NS1 affibody-functionalized AuNPs to improve the detection sensitivity of NS1 antigen in ELISA. First, we screened NS1 antigen-specific affibody molecules (ZNS112, ZNS116, and ZNS146) from the affibody phage library. The affibodies were then expressed and purified from Escherichia coli. Among them, the ZNS112 affibody showed the highest equilibrium binding constant (Kd) of 1 μM and was sufficiently stable at high temperatures. This affibody was functionalized on AuNPs measuring 20 nm in diameter and were used as carriers to achieve amplification of the signal in ELISA. The developed anti-NS1 affibody-functionalized AuNPs ((ZNS112)2-AuNP) showed good properties, such easy synthesis, high number of affibodies conjugation on AuNPs, and excellent stability under harsh conditions with high salt concentrations and temperature. In addition, this nanoparticle-based enhanced ELISA resulted in a 14.2-fold signal amplification performance for dengue NS1 detection in comparison with affibody-based ELISA. This novel and sensitive method using (ZNS112)2-AuNP may have applications in the detection of DENV in infected patients at an early stage and for the detection of other pathogens in clinical diagnostics.

    更新日期:2018-06-22
  • 更新日期:2018-06-22
  • Novel antitumor copper(II) complexes designed to act through synergistic mechanisms of action, due to the presence of an NMDA receptor ligand and copper in the same chemical entity
    New J. Chem. (IF 3.269) Pub Date : 2018-06-12
    Maria Beatrice Morelli, Consuelo Amantini, Giorgio Santoni, Maura Pellei, Carlo Santini, Cristina Cimarelli, Enrico Marcantoni, Marino Petrini, Fabio Del Bello, Gianfabio Giorgioni, Alessandro Piergentili, Wilma Quaglia
    更新日期:2018-06-22
  • Facile synthesis of Co3O4 disordered circular sheets for selective electrochemical determination of nitrite
    New J. Chem. (IF 3.269) Pub Date : 2018-06-11
    Velayutham Sudha, Sanjib Anwesha Mohanty, Rangasamy Thangamuthu
    更新日期:2018-06-22
  • A simple anti-solvent method for the controlled deposition of metal and alloy nanoparticles
    New J. Chem. (IF 3.269) Pub Date : 2018-06-11
    Anju Ajayan, Vineeth Madhavan, Sumitha Chandran, Poovathinthodiyil Raveendran
    更新日期:2018-06-22
  • Transformation of the surface compositions of titanium during alkali and heat treatment at different vacuum degrees
    New J. Chem. (IF 3.269) Pub Date : 2018-06-11
    Ning-bo Li, Gui-yong Xiao, I-Hsien Tsai, Jun-han Zhao, Xin Chen, Wen-hua Xu, Yu-peng Lu
    更新日期:2018-06-22
  • 更新日期:2018-06-22
  • Effects of modified nanocrystalline cellulose on the hydrophilicity, crystallization and mechanical behaviors of poly(3-hydroxybutyrate-co-3-hydroxyhexanoate)
    New J. Chem. (IF 3.269) Pub Date : 2018-06-07
    Pengwu Xu, Ying Cao, Baogou Wu, Piming Ma, Weifu Dong, Huiyu Bai, Hongji Zhang, Han Zhu, Mingqing Chen
    更新日期:2018-06-22
  • 更新日期:2018-06-22
  • Xerogel modified diatomaceous earth microparticles for controlled drug release studies
    New J. Chem. (IF 3.269) Pub Date : 2018-06-07
    U. T. Uthappa, G. Sriram, Varsha Brahmkhatri, Madhuprasad Kigga, Ho-Young Jung, Tariq Altalhi, Gururaj M. Neelgund, Mahaveer D. Kurkuri
    更新日期:2018-06-22
  • Ion exchange for synthesis of porous CuxO/SnO2/ZnSnO3 microboxes as a high-performance lithium-ion battery anode
    New J. Chem. (IF 3.269) Pub Date : 2018-06-07
    Min Zhang, Jingjing Ma, Yidan Zhang, Leidan Lu, Yaqin Chai, Ruo Yuan, Xia Yang
    更新日期:2018-06-22
  • Effect of thermal treatment on the photocatalytic behavior of TiO2 supported on zeolites
    New J. Chem. (IF 3.269) Pub Date : 2018-06-06
    Kiros Guesh, Álvaro Mayoral, Yonas Chebude, María José López-Muñoz, Carlos Márquez-Álvarez, Isabel Diaz
    更新日期:2018-06-22
  • 更新日期:2018-06-22
  • Preparation of Y2SiO5:Pr3+,Li and Na2NbxTa2−xO6/(Au/RGO) composites and investigation into visible-light driven photocatalytic hydrogen production
    New J. Chem. (IF 3.269) Pub Date : 2018-06-06
    Xudong Liu, Xu Zhang, Cheng Zhao, Xiaoqing Shu, Dawei Fang, Jun Wang, Youtao Song
    更新日期:2018-06-22
  • 更新日期:2018-06-22
  • Conformation-induced light emission switching of N-acylhydrazone systems
    New J. Chem. (IF 3.269) Pub Date : 2018-06-05
    Anca G. Coman, Anca Paun, Codruţa C. Popescu, Niculina D. Hădade, Cătălin C. Anghel, Augustin M. Mădălan, Petre Ioniţă, Mihaela Matache
    更新日期:2018-06-22
  • Hierarchical porous carbon obtained from frozen tofu for efficient energy storage
    New J. Chem. (IF 3.269) Pub Date : 2018-06-01
    Xuemei Sun, Jianglin Ye, Fei Pan, Jin Xu, Tao Cheng, Xiangyang Wang, Mujtaba Ikram, Yanwu Zhu
    更新日期:2018-06-22
  • [bmIm]Br catalyzed tandem construction of C–C and C–O bonds: a concise, convenient and atom-economical strategy for the synthesis of spiropyranopiperidine derivatives
    New J. Chem. (IF 3.269) Pub Date : 2018-05-28
    Malik A. Waseem, Rafiq A. Rather, Mohammad Saquib, Afshan Ibad, Farah Ibad, Khursheed Ansari, M. A. Khuroo, Mohammed A. Assiri, I. R. Siddiqui
    更新日期:2018-06-22
  • Acidic Ionic Liquids: An alternative to HF for {001} reactive facet controlled synthesis of anatase titania
    New J. Chem. (IF 3.269) Pub Date : 2018-06-20
    Vasundhara Singh, Sofia Sandhu, Satwant Kaur Shahi

    This is the report of facet controlled synthesis of TiO2 which has been achieved using acidic room temperature ionic liquids (AIL) 1-butyl-3-methylimidazolium hydrogen sulphate and 3-methyl-1-(3-sulfonyl propyl) imidazolium trifluoro methane sulphonate as the templating and hydrolysing agent. The effect of change of concentration of AIL, amount of AIL and calcination temperature demonstrated good phase control and higher exposed {001} facets in the TiO2 nanocatalysts with higher photocatalytic activity.

    更新日期:2018-06-22
  • Molecular design toward suppressing electron recombination and enhancing light-absorbing ability of dye for sensitized solar cell: A theoretical investigation
    New J. Chem. (IF 3.269) Pub Date : 2018-06-20
    Ping Li, Chongping Song, Zhixiang Wang, Jiaqi Li, houyu Zhang

    The recombination rates of two typical D-π-A dyes have been evaluated qualitatively by means of quantum chemical calculations. By dissecting the geometrical and electronic structures of the dyes, the function of inserted phenyl ring in inhibiting recombination is recognized as blocking back electron transfer and decreasing the HOMO distribution on the anchoring group, but distorted structure caused by the inserted benzene ring also decreases the light harvesting ability. Molecular designs for screening potential dyes are carried out on a comprehensive consideration on both suppressing recombination and enhancing light absorption. Tightening the adjacent rings in donor and π-spacer is verified to be feasible in extending the π-conjugation, thus leading to red-shifted and broad absorption spectra. The calculated results show that the dyes possessing both small weight of HOMO on anchoring group and relatively strong light harvesting ability are the promising candidates for dye-sensitized solar cells. Moreover, this work gives a deep understanding of the relation between the electron recombination rate and the electronic structure of dye, and provides a theoretical guideline on the design of high performance sensitizer materials.

    更新日期:2018-06-22
  • Bright-blue-emission nitrogen and phosphorus doped carbon quantum dots as a promising nanoprobe for detection of Cr (VI) and ascorbic acid in pure aqueous solution and in living cell
    New J. Chem. (IF 3.269) Pub Date : 2018-06-20
    Vikas Kumar Singh, Virendra singh, Pradeep Kumar Yadav, Subhash Chandra, Daraksha Bano, VIJAY KUMAR, Biplob Koch, Mahe Talat, Syed Hadi Hasan

    A highly fluorescent nitrogen and phosphorus doped carbon quantum dots (N,P-CQDs) were synthesized via one step hydrothermal method and fully characterized through the various technique such as TEM, DLS, FT-IR, P-XRD and XPS analysis. The as synthesized N,P-CQDs showed excellent optical properties and exhibited bright blue colour under UV- light with CIE coordinate (0.20, 0.22) along with high quantum yield 73 %. Owing to this, it acts as an on-off fluorescent nanoprobe for selective and sensitive detection of highly toxic Cr (VI) below its permissible limit via inner filter effect (IFE) and static quenching mechanism. In addition, the Cr (VI) could be reduced to lower valent chromium species. Therefore, N,P-CQDS + Cr (VI) system further act as selective off-on sensor of reductant ascorbic acid (AA) because it reduced Cr (VI) to Cr (III) species resulting elimination of IFE and recovery of fluorescence of N,P-CQDs. Notably, it possessed excellent biocompatibility, negligible cytotoxicity therefor potential applied for fluorescence imaging of intracellular Cr (VI) and ascorbic acid (AA) in the living cells and complex biological system.

    更新日期:2018-06-20
  • Antioxidant properties and free radical scavenging mechanisms of cyclocurcumin
    New J. Chem. (IF 3.269) Pub Date : 2018-06-20
    Yunkui Li, Marirosa Toscano, Gloria Mazzone, Nino Russo

    Recently, cyclocurcumin, a seldomly studied minor component of curcuminoids, has been found to exhibit abundant bioactivities. To explore the antioxidant properties and free radical scavenging mechanisms of neutral and deprotonated cyclocurcumins, a theoretical study, based on density functional theory using the exchange-correlation M052X functional in connection with the 6-311++G(d,p) basis set, was employed. Bond dissociation enthalpy, electron transfer enthalpy, ionization potential, proton affinity and proton dissociation enthalpy thermodynamic properties were computed in order to establish what among the hydrogen-atom transfer, single electron transfer-proton transfer and sequential proton loss-electron transfer reaction mechanisms is preferentially followed by cyclocurcumin to inactivate •OH and •OOH free radicals in water and chlorobenzene. The results show that cyclocurcumin has strong activity as scavenger of •OH and •OOH free radicals preferentially by its 4’-OH phenolic radical via a hydrogen-atom transfer mechanism under water and physiological environment. The solvent effects are not significant for preferred mechanism.

    更新日期:2018-06-20
  • Role of 2,3-bis(pyridyl)pyrazinyl chelate bridging ligand on the reactivity of Ru(II)-Pt(II) dinuclear complexes on the substitution of chlorides by thiourea nucleophiles – kinetic study
    New J. Chem. (IF 3.269) Pub Date : 2018-06-20
    Rajesh Bellam, Jaganyi Deogratius, Allen Mambanda, Ross Stuart Robinson

    Chloride substitution from [(1,10-phenanthroline)2Ru(II)(μ-2,3-bis(2-pyridyl)pyrazine)Pt(II)dichloride]2+ (RuPt1); [(1,10-phenanthroline)2Ru(II)(μ-2,3-bis(2-pyridyl)quinoxaline)Pt(II)dichloride]2+ (RuPt2) and [(1,10-phenanthroline)2Ru(II)(μ-2,3-bis(2-pyridyl)benzo[g]quinoxaline)Pt(II)dichloride]2+ (RuPt3) by thiourea (TU); 1,3-dimethyl-2-thioura (DMTU) and 1,1,3,3-tetra methyl-2-thiourea (TMTU) was studied in methanol medium (I = 0.10 M) under pseudo-first-order conditions. The rate of substitution was investigated as a function of concentration of nucleophile and temperature using the stopped-flow technique. Two consecutive substitution steps were observed. The first and fast step was ascribed to the simultaneous substitution of the two chloride co-ligands by incoming nucleophiles according to the rate law: = [Nu]. The subsequent step was assigned to the dechelation of the rigid 2,3-bis(pyridyl)pyrazinyl bridging ligand from the Pt(II) centres of the substituted intermediates to give and (phen)2Ru(II)(2,3-bis(pyridyl)pyrazinyl) groups as products. The rate law for this step is = [Nu] + . The second-order kinetics and large negative entropies for both steps support an associative mechanism of substitution. The rate of chloride substitution was RuPt1 <<RuPt2 < RuPt3. This is also the order of increase in the π-surface of the bridging ligand and an indication that π-back donation of electron density from the Pt-5dπ orbitals into the *-acceptor bridging ligand is the dominant factor controlling the substitution of the chloride from the complexes. The nucleophiles’ order of reactivity was TU > DMTU > TMTU, in accord to their steric bulk.

    更新日期:2018-06-20
  • Zinc(II) Complexes with Uncommon Aminal and Hemiaminal Ether Derivative: Synthesis, Structure, Phosphatase Activity and Theoretical Rationalization of Ligand and Complex Formation
    New J. Chem. (IF 3.269) Pub Date : 2018-06-20
    Debasis Das, Suranjana Purkait, Prateeti Chakraborty, Antonio Frontera, Antonio Bauza, Ennio Zangrando

    Condensation of N-(2-hydroxyethyl)ethylenediamine and pyridine-2-carbaldehyde in presence of ZnX2 salts (X = ClO4-, Cl-, Br-, I-) generates four complexes, namely [ZnL1Cl](ClO4) (1), [ZnL1Cl][ZnCl3(H2O)].2H2O (2), [ZnL1Br][ZnBr3(H2O)].2H2O (3), and [Zn(L2)3]I2 (4), where L1 and L2 are aminal and hemiaminal ether derivatives i.e, (E)-N-((pyridine-2-yl)methylene)-2-(2-pyridine-2-yl)oxazolidin-3-yl)ethanamine and 2-(2-pyridin-2-yl-imidazolidin-1-yl)-ethanol, respectively. No complex with the expected Schiff-base ligand, (E)-2-(2-(pyridin-2-ylmethyleneamino)ethylamino)ethanol (L), neither with 2-(2-pyridyl-3-(2-hydroxyethyl))oxazolidine (L3) was obtained. The structure of complexes 1, 3, and 4 has been elucidated by single crystal X-ray diffraction. All the complexes have been characterized by detailed NMR (1H, 13C and DEPT-135) and ESI-MS analyses indicating retention in solution of the structure determined in solid state. Complex 1 deserves special mention as during its formation ClO4- ion undergoes reduction to Cl- and thus it becomes a mixed anionic ligand complex. Thorough DFT calculations have been performed at the BP86-D3/def2-TZVP level of theory to rationalize the ligand and complex formation. Calculations suggest that the aminal form (L1) is the most favored species followed by the Schiff-base, whereas the hemiaminal ether form (L3) is the least preferred one. The role of halides on constructing the monoanionic [ZnX3(H2O)]– is crucial and the achieved complex is highly favored when X = Cl and disfavored for X = I, and this trend has been rationalized by DFT calculations. Phosphatase activity of the complexes has been investigated and efficiency follows the order 2 > 1 > 3 > 4.

    更新日期:2018-06-20
  • Negatively Charged Boron Nitride Nanosheet as a Potential Metal-Free Electrocatalyst for Oxygen Reduction Reaction: a Computational Study
    New J. Chem. (IF 3.269) Pub Date : 2018-06-20
    Xin Wen, Yongcheng Wang, Jing-Xiang Zhao

    The high cost and poor stability in an electrochemical environment, the conventionally employed Pt–based catalysts for oxygen reduction reaction (ORR) have hindered the large–scale commercialization of fuel cells. Thus, searching for the high activity, low–cost, and stable metal–free catalysts to replace Pt–based catalysts is very desirable. Here, by means of density functional theory (DFT) computations, we explored the possibility of employing the negatively charged boron nitride (BN) nanosheet, which is easily available in experiments, as an ORR electrocatalyst. The results show that the O2 molecule can be strongly chemisorbed on the charged BN nanosheet, which is an essential step to initiate the subsequent reactions. The calculated activation energies and reaction energies of each ORR step indicate that the ORR can easily occur via a direct four–electron pathway, forming two H2O molecules, in which OOH* + H+ + e- → 2OH* is the rate–determining step with an activation energy of 0.561 eV, and the computed limiting potential is about 0.676 V. Therefore, our results demonstrate that the negatively charged BN nanosheet is a quietly promising metal-free ORR electrocatalyst with high efficiency.

    更新日期:2018-06-20
  • Catalytic activity of corrole complexes with post-transition elements for oxidation of carbon monoxide: A first-principles study†
    New J. Chem. (IF 3.269) Pub Date : 2018-06-20
    Afshan Mohajeri, Nasim Hassani

    This theoretical investigation explores the electronic and catalytic properties for the complexes of 5, 10, 15-tris-phenyl corrole with several post-transition elements, namely, CorM with M=Al, Ga, Si, Ge, and As. Aiming to gain insight into the catalytic activity of corrole complexes, we investigate the mechanistic details for the catalytic oxidation of CO over the considered corrole complexes. It is found that except CorAs, other considered CorM can efficiently activate the adsorbed O2 molecule. In the case of CorSi and CorGe, the formation of stable carbonate-like intermediate does not allow to proceed the CO oxidation. On the contrary, CorAl and CorGa are able to facilitate the activation of O2 and subsequently promote the oxidation of CO. We show that the calculated barriers for the CO oxidation mediated by the CorAl and CorGa are comparable with those previously obtained for other metal-carbon surfaces such as iron- and copper-embedded graphene. However, the synthesis feasibility of CorAl and CorGa is a promise towards designing non-noble metal catalysts for low–temperature CO oxidation with higher activity and lower cost.

    更新日期:2018-06-20
  • A multi-signal fluorescent probe for discrimination of cysteine/homocysteine, and glutathione and the application in living cells and zebrafish
    New J. Chem. (IF 3.269) Pub Date : 2018-06-20
    Gaoping Xu, Yonghe Tang, Weiying Lin

    Biological thiols are ubiquitous common in living organisms and play an important role in metabolism and redox homeostasis. Abnormal concentrations of biological thiols may lead to many malignant diseases. It is difficult to distinguish biological thiols by fluorescent techniques because they possess similar chemical structures and properties. Herein, we developed a new fluorescent probe CI to distinguish cysteine/homocysteine (Cys/Hcy) and glutathione (GSH) by multi-signal fluorescence mode. When the respective biological thiols were introduced, the probe would react with these biological thiols by thiol-halogen SNAr nucleophilic substitution-rearrangement mechanism and display two different fluorescent signals with two different excitation wavelengths. After identifying Cys/Hcy and GSH, CI showed good two-photon property because of the coumarin structure. Significantly, the probe was effectively applied for the imaging of Cys/Hcy and GSH in living cells via two-color fluorescence imaging.

    更新日期:2018-06-20
  • Triple detection modes for Hg2+ sensing based on a NBD-fluorescent and colorimetric sensor and its potential in cell imaging
    New J. Chem. (IF 3.269) Pub Date : 2018-06-20
    Sasiwimon Kraithong, Rapeepat Sangsuwan, Nattawan Worawannotai, Jitnapa Sirirak, Adisri Charoenpanich, Patchanita Thamyongkit, Nantanit Wanichachewa
    更新日期:2018-06-20
  • Mixed polymeric micelles as multifunctional visual thermo-sensor for rapid analysis of mixed metal ions with Al3+ and Fe3+
    New J. Chem. (IF 3.269) Pub Date : 2018-06-20
    Juan Han, Yunfeng Cai, Yun Wang, Xiaohui Dai, Lei Wang, Chunmei Li, Baodong An, Liang Ni

    A novel type of responsive mixed double hydrophilic block copolymers (DHBC)-based multifunctional visual thermo-sensor (the mixed copolymers of poly(ethylene oxide)-b-poly(N-isopropylacrylamide-co-2,4-methacryloyl benzaldehyde oxime) (PEG-b-P(NIPAM-co-BDMa) and poly(ethylene oxide)-b-poly(N-isopropylacrylamide-co- rhodamine 6G methyl acrylic acid) (PEG-b- P(NIPAM-co-Rh6GEMa) for the detection of Al3+ and Fe3+ was designed and synthesized based on the reversible addition-fragmentation chain transfer (RAFT) polymerization. The studies of sensing processes showed that the multifunctional visual thermo-sensor had excellent selectivity for Al3+ and Fe3+ ions over many environ-mentally relevant ions, and high sensitivity with the detection limit in nanomolar level. Moreover, the multifunctional visual thermo-sensor can form the micelles with (P(NIPAM-co-BDMa)/P(NIPAM-co-Rh6GEMa) blocks as cores and well-solvated PEG block as coronas when increasing the temperature, which can enhance the detection sensitivity of Al3+ and Fe3+ ions. The detection limit of 0.05 g/L mixed micelles for the analysis of Al3+ and Fe3+ ions from 25 °C to 40 °C were decreased from ∼5.95 to ~4.02 nM, ∼30.30 nM to ~23.84 nM, respectively. Furthermore, mixed micelles combined with Principal Component Analysis (PCA) and linear regression analysis to establish prediction models to achieve quantitative detection of the mixed ions with Al3+ and Fe3+ successfully.

    更新日期:2018-06-20
  • Efficient synthetic procedure to new 2-imino-1,3-thiazolines and thiazolidin-4-ones promoted by acetonitrile electrogenerated base
    New J. Chem. (IF 3.269) Pub Date : 2018-06-20
    Beya Haouas, Najwa Sbei, Hana Ayari, M. Lamine Benkhoud, Belen Batanero
    更新日期:2018-06-20
  • Nano-dispersed platinum(0) in organically modified silicate matrices as sustainable catalysts for a regioselective hydrosilylation of alkenes and alkynes
    New J. Chem. (IF 3.269) Pub Date : 2018-06-12
    Brett J. Duke, Evan N. Akeroyd, Shreeja V. Bhatt, Chibueze I. Onyeagusi, Shreya V. Bhatt, Brandy R. Adolph, Jean Fotie
    更新日期:2018-06-20
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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