Materials Literature
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The main objective of this work is the preparation of ceramic supports and membranes for microfiltration application. The supports were prepared by using clay and calcium carbonate mixtures as starting materials. The choice of these raw materials is based on their natural abundance. These powders were mixed with certa…
The development of ruthenium-free sensitizers which absorb light over a broad range of the solar spectrum is important for improving the power conversion efficiency of dye-sensitized solar cells. Here we study three chemically tailored porphyrin-based dyes. We show that by fusing the porphyrin core to an anthracene un…
We report the formation of a novel class of supramolecular miktoarm star polymers via cyclodextrin host–guest chemistry. Reversible addition–fragmentation chain transfer polymerization from difunctional guest- or alkyne-containing chain transfer agents and copper(I)-catalyzed azide–alkyne cycloaddition leads to host-…
Thin films of neodymium aluminate (NdAlOx) have been deposited by liquid injection metalorganic chemical vapor deposition (MOCVD) using the bimetallic alkoxide precursor [NdAl(OPri)6(PriOH)]2. The effects of high‐temperature postdeposition annealing on NdAlOx thin films are reported. The as‐deposited thin films are am…
The metal–organic framework NH2-MIL-53(In) shows a very high amorphization resistance (>20 GPa) together with a large compressibility (K0 = 10.9 GPa).
A facile, low temperature polyol method is developed to synthesize graphene-wrapped, rod-shaped LiFePO4 (LFP) cathode materials. The effects of reaction temperature and reduced graphene oxide (RGO) on the morphology and electrochemical performance of RGO/LFP composites are studied. The RGO/LFP containing 10 wt% precur…
A group of novel zinc complexes containing 2-hydroxyphenylbenzothiazole (BTZ) ligands were designed and synthesized, in which different substituents (OCH3, CH3, F, CF3, COOCH2CH3) were attached at the 6-position of the benzothiazole ring in the BTZ ligands. Both photoluminescence (PL) and electroluminescence (EL) beha…
High power conversion efficiency and long-term stability are significant targets for practical applications of dye-sensitized solar cells. Here, we present a quasi-solid-state dye-sensitized solar cell that incorporates a low molecular weight organic gelator-based electrolyte in conjunction with a high-absorptivity ru…
A vanadyl(monocatecholate)-decorated metal-organic framework was synthesized using two sequential post-synthesis modifications. This material is catalytically active for the oxidation of organo-sulfide. In contrast to the homogeneous control catalyst, it can be tuned to be selective for the sulfoxide product using ter…
We demonstrate the synthesis of a sandwich-like nanocomposite by planting rutile TiO2 nanorods onto reduced graphene oxide (RGO) via a modified seed-assisted hydrothermal growth method. The synthetic process consists of functionalization of graphene oxide (GO), followed by hydrolytic deposition of TiO2 nanoparticles o…
A series of coordination polymers based on 5-(2-carboxybenzyloxy) isophthalic acid and bis(imidazole) ligands, namely, [Cd(HL)(biim-3)]·5H2O (1), [Zn2(HL)2(biim-3)2]·3H2O (2), [Zn(HL)(biim-4)] (3), [Co(HL)(biim-4)] (4), [Co(HL)(biim-5)2]·6.75H2O (5), [Cu(HL)(biim-4)] (6) and [Cu(HL)(biim-5)] (7), where H3L = 5-(2-carb…
A low band-gap conjugated polymer, PBDTDPP, composed of unsubstituted benzo[1,2-b:4,5-b']dithiophene and diketopyrrolo[3,4-c]pyrrole was synthesized. The deep HOMO level of PBDTDPP enhances the V(OC) of a PSC up to 0.82 V and exhibits a PCE of 5.16%, while alkoxy substituted PBDTDPP-OR yields a PCE of 2.24% with a V(O…
A series of LiNi1/3Co1/3Mn1/3O2 samples are synthesized based on the homogeneous precursors formed in ethanol. The cation mixing, Li+ diffusion ability and high rate capacity of LiNi1/3Co1/3Mn1/3O2 materials are studied by XRD, CV and EIS etc. LNCM-24H presents the lowest cation mixing and a well layered crystal struc…
Enhanced power conversion efficiency (PCE(%)) with improved optical path length from two types of shape controlled silver (Ag) materials (Ag nanoplates versus Ag nanoparticles (NPs)) was studied in poly(3-hexylthiophene) (P3HT)/[6,6]-phenyl C71 butyric acid methyl-ester (PC71BM) or poly[N-9′′-hepta-decanyl-2,7-carbazo…
Novel dynamic [2]catenanes interlocked by the quadruple hydrogen bonding ureidopyrimidinone (UPy) motif have been developed. The dynamic catenation process was due to the selective cyclization of bifunctional UPy molecules over a wide concentration range with the assistance of the cyclobis(paraquat-p-phenylene) (CBPQT…
A chemosensor is reported with high sensitivity and selectivity for detection of fluoride anion. The recognition mechanism is attributed to a fluoride-triggered disruption of the hydrogen bond between imidazole and naphthalimide moieties, resulting in a noncoplanar geometry with low fluorescence.
It is of great importance to mitigate nanoparticle exposure in the environment by using effective control devices. For controlling nanoparticles with the particle diameter (dp) < 100 nm in the air environment, electrostatic precipitators (ESPs) are widely used in many industries because of their low pressure drop and…
An investigation on the opto-electronic and photovoltaic properties of a pair of alkoxy substituted quinoxaline-based copolymers PTTQx is performed in order to describe the effect of changing the position of alkoxy substituents on the peripheral phenyl rings. The copolymer with meta-positioned alkoxy showed lower HOMO…
Quite recently we have found two nitrogen fixation systems catalyzed by molybdenum-dinitrogen complexes under mild reaction conditions; one is the transformation of molecular dinitrogen into its synthetic equivalent of ammonia and the other is that into ammonia. A molybdenum-dinitrogen complex bearing two ferrocenyl d…
The electro-oxidation of silver and nickel nanoparticles in aqueous solution was studied via their collisions with a carbon electrode. The average charge passed per impact varies with electrode potential and was analysed to determine that AgNPs display an electrochemically fast ("reversible") one-electron oxidation, w…