A new covalent organic framework (COF), PP-TzDa, has been synthesized by post-synthetic modification. Our studies suggest that the modification leads to the changes of both the stacking mode and the fluorescence emission. This new COF shows dual fluorescence emissions, and can be used as a ratiometric fluorescent temperature sensor. In the range of 20–100 °C, the COF suspensions in DMF exhibit the

Parabolic flight experiments were carried out to investigate the effect of ambient pressure on the extinction limit for opposed flame spread over an electric wire insulation in microgravity. Low-density polyethylene insulated Nickel-Chrome wires with inner core diameter of 0.50 mm and insulation thickness of 0.30 mm were examined for ambient pressures ranging from 50 kPa to 140 kPa for an external

The mechanism of fuel surface cooling with water were studied experimentally by visualising a water droplet impacting on surfaces of burning wood. This droplet impact condition was investigated experimentally for the first time. The main focus of this current investigation is to provide a behaviour description of a water droplet impacting a burning solid surface, with the intent to clarify the differences

Five coordination compounds [Cu 2 (impc) 2 ( μ 2 ‐OH)Cl] n ( 1 ), [Cu 2 (impc) 2 ( μ 2 ‐OH)Br] n ( 2 ), [Co(impc) 2 (H 2 O) 2 ] n ( 3 ), [Co 4 (impc) 4 (SO 4 ) 2 (H 2 O)] n ( 4 ) and {[Co(impc)(H 2 O) 2 ] . H 2 O} ( 5 ) based on asymmetric 5‐(1H‐imidazole‐l‐yl)‐3‐pyridinecarboxylic acid (Himpc) have been hydrothermally synthesized and structurally characterized. 1 and 2 are isostructural and consist

Effective design of metal complexes to manipulate its lipid-water distribution coefficient is an appealing strategy in improving its cellular penetration and treatment efficacy. Here, we conveniently synthesized three iridium (Ir) complexes with red fluorescence via simple non-conjugate modification of the side arm of ligand. The bio-evaluation revealed that only add non-conjugate selenium (Se) arene

Structure and defect manipulation are regarded as efficacious strategies to boost the electrochemical activity of electrode materials. Herein, the construction of one-dimensional (1D) porous cobalt oxysulfide (Co-O-S) nanorods with rich oxygen vacancies is demonstrated through a facile metal-organic framework-engaged strategy. Starting from a Co-NTA (NTA= nitrilotriacetic acid) precursor, the Co-O-S

A facile synthetic route by using rhombic dodecahedral zeolitic imidazolate framework-8 (ZIF-8) as the structure template is devoted to fabricating ZnS/ZnIn2S4 hybrid heterojunction, which combined the sulfurization of ZIF-8 and in-situ precipitation of ZnIn2S4 in one pot and produced the compact heterostructure. The resulting ZnS nanoparticles sized in about 100 nm were uniformly dispersed in the

A porous Zn(II)-coordination polymer, {[Zn2(μ8-abtc)(betib)]•DMF}n (1), was solvothermally synthesized with 3,3′,5,5′-azobenzenetetracarboxylate (abtc4-) and 1,4-bis(imidazol-1-yl)butane (betib) ligands and {[Zn2(μ8-abtc)(betib)]•H2O}n (2) was obtained through immersing of 1 in methanol. Compounds 1 and 2 were structurally characterized by various techniques. Both compounds displayed 3D porous framework

For a set of 40 silicon-bridged C2-symmetric ansa-zirconocenes, reactivity ratios in ethene/1-hexene copolymerization were experimentally determined by means of an accurate high-throughput experimentation (HTE) approach, and used to develop quantitative structure-activity relationship (QSAR) models for comonomer affinity using chemically meaningful descriptors. These QSAR models rely almost exclusively

Evaluating the catalytic influence of metal sites on the derivates obtained from calcination of metal-organic frameworks (MOFs) is very important for rational construction of novel MOFs. Based on this catalytic functional guidance, two new Co-MOF and CoNi-MOF crystals have been designedly synthesized and further pyrolyzed to obtain corresponding porous carbon-based catalysts. Interestingly, the derivates

Two-dimensional carbides/nitrides, typically called MXenes, are an emerging member of the ever-growing family of two- dimensional materials. The prediction of a ferromagnetic groundstate in chromium-containing MXenes has triggered growing interest in their chemical exfoliation from Cr-based MAX phases. However, the exfoliation poses serious difficulties using standard etching agents such as hydrofluoric

An amine-functionalized metal organic framework (MOF) was used as highly efficient and recyclable heterogeneous catalyst for Knoevenagel condensation of various aromatic aldehydes and ketones in ethanol. The catalytic efficiency was demonstrated by the high conversion of the reactants with 100 % selectivity under microwave (µW) irradiation, while dramatically reduced the reaction time as compared to

The effects of chloride salts on concrete durability have been financially and logistically overwhelming. Current test methods for quantifying diffusivity of chlorides in concrete are time consuming and demanding. A comprehensive electrical resistivity model has been developed to quantify the chloride diffusion coefficient of concrete. The model employs the modified Nernst-Einstein equation along with

Corrosion monitoring of reinforcement is of great importance in evaluating the durability performance of concrete structures, especially under harsh environments. This paper presents a creative approach that combine using innovative electromagnetic monitoring apparatus (EMMA) and digital image correlation (DIC) technique in order to monitor the reinforcement corrosion inside concrete. The new-type

Page 8908. The manuscript was originally published with an incorrect grant number. The correct Acknowledgment follows. This research was partially supported by a National Science Foundation grant (Grant CHE-1800517), as well as an NSF-MRI grant (Grant CHE-0923449), to the University of Kansas that purchased the X-ray diffractometer and software used in this study. This article has not yet been cited

Reaction of CrCl2(N‐tBu)2 with 1,3‐dimethylimidazol‐2‐ylidene (IMe), 1,3‐dimethyl‐4,5‐dichloroimidazol‐2‐ylidene (IMeCl2), 1,3‐di(2‐propyl)imidazol‐2‐ylidene (IPr), 1,3‐dimesitylimidazol‐2‐ylidene (IMes) and 1,3‐bis(2,6‐(2‐Pr)2C6H3)imidazol‐2‐ylidene (IDipp) yields the corresponding N‐heterocyclic carbene (NHC) adducts CrCl2(IMe)(N‐tBu)2 (1), CrCl2(IMeCl2)(N‐tBu)2 (2), CrCl2(IPr)(N‐tBu)2 (3), CrCl2(IMes)(N‐tBu)2 (4)

Through different pathways, two unsaturated thiolate‐bridged CoIICoII complexes [Cp*Co(μ‐SR)2CoCp*] (1, R = Ph; 3, R = i Pr, Cp* = η5‐C5Me5) were successfully synthesized. Interaction of complexes 1 or 3 with HBF4 resulted in oxidative addition to give the corresponding thiolate‐bridged CoIIICoIII hydride bridged complexes 4[BF4] and 5[BF4]. 1H NMR spectroscopic results indicate there exist two conformational

In 2015 and 2016, groundwater samples were collected in Hanoi to analyse the isotopic composition (δ2H, δ18O and 3H) and elucidate the relationship between groundwater and surface water, as well as the origin of the groundwater. The values for δ18O and δ2H indicate that the groundwater originated from evaporated meteoric water and the isotope enrichment is due to the evaporation of shallow groundwater

ABSTRACT Stable isotope data from durable, sequentially grown tissues (e.g. hair, claw, and baleen) is commonly used for modelling dietary niche breadth. The use of tissues grown over multiple months to years, however, has the potential to complicate isotopic niche breadth modelling, as time-averaged stable isotope signals from whole tissues may obscure information available from chronologically resolved

Persistent phosphors emitting in the ultraviolet (UV) spectral region have attracted great attention in recent years, owing to their promising implications to many advanced applications ranging from photocatalysis to phototherapy. Here, we report the development of a novel UVA emissive persistent phosphor by doping Bi3+ into LiScGeO4 host. The LiScGeO4:Bi3+ persistent phosphor can be effectively charged