Materials Literature
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A series of biodegradable hydrogels based on oligo(2,2-dimethyltrimethylene carbonate)-block-poly(ethylene glycol)-block-oligo(2,2-dimethyltrimethylene carbonate) diacrylate (DPD-DA) precursor with varied length of hydrophilic poly(ethylene glycol) (PEG) segment and hydrophobic oligo(2,2-dimethyltrimethylene carbonate…
Various cluster models of graphene and a periodic graphene with two organic electron acceptors (tetracyanoethylene and tetracyanoquinodimethane) were investigated by means of several quantum chemical and molecular mechanical approaches. The benchmark interaction energies of the coronene complexes were calculated at th…
The fabrication of zinc tetraphenyl porphyrin (ZnTPP)–silver nanoparticle (AgP) composite films on indium–tin-oxide (ITO) electrodes were carried out by the electrostatic layer-by-layer adsorption technique. The degree of immobilization of AgPs on the ITO electrodes could be controlled by changing the immersion time i…
Several approaches have recently been shown for self-assembled biomimetic composite films, aiming at combinations of high toughness, strength, and stiffness. However, it remains challenging to achieve high toughness using simple processes especially for bulk materials. We demonstrate that ionically interacting cationi…
Inorganic pyrophosphatase (IPPase) from the archaeon Thermococcus thioreducens was cloned, overexpressed in Escherichia coli, purified and crystallized in restricted geometry, resulting in large crystal volumes exceeding 5 mm3. IPPase is thermally stable and is able to resist denaturation at temperatures above 348 K.…
We demonstrate the use of contrast-matched resonant soft X-ray scattering (RSoXS) for studying the morphology of mesoporous polystyrene- block -polyethylene- block -polystyrene (SES) copolymer membranes. The mesoporous membranes were obtained by blending the SES copolymer and polystyrene (PS) homopolymer to obtain a n…
A single crystal domain texture quality (a unique in-plane and out-of-plane crystalline orientation over a large area) ZnO nanostructure of a dense nanowire array on a thick film has been homogeneously synthesized on a-plane sapphire substrates over large areas through a one-step chemical vapor deposition (CVD) proces…
When a granular system is tapped, its volume changes. Here, using a well-defined macroscopic protocol, we prepare an ensemble of granular systems and track the statistics of volume changes as a function of the number of taps. This is in contrast to previous studies, which have focused on single trajectories and assume…
Abstract The organic sensitizer terephthalic acid and its anion terephthalate (TA) were introduced into the galleries of europium‐doped layered yttrium hydroxide (LYH:Eu). In contrast to using water as solvent, the use of formamide resulted in the introduction of more organic guests and markedly enhanced the Eu 3+ lum…
Natural fibres are generally added to polymer matrix composites to produce materials with the desirable mechanical properties of higher specific strength and higher specific modulus while at the same time to maintain a low density and low cost. The physical and mechanical properties of polymer composites can be enhanc…
The morphology of nanocomposites plays a pivotal role in understanding their functionality and determines their capabilities for applications. The use of nanocomposite coatings requires a study of the size effects on their functional properties. Noble metal nanoparticles are promising candidates for nanocomposite thin…
Riboflavin (vitamin B₂) is the precursor of the flavin coenzymes flavin mononucleotide and flavin adenine dinucleotide. In Escherichia coli and other bacteria, sequential deamination and reduction steps in riboflavin biosynthesis are catalyzed by RibD, a bifunctional protein with distinct pyrimidine deaminase and redu…
Owing to the influence of nanomaterials on biomacromolecular behavior, their potential applications are rapidly gaining attention. Based on atomistic molecular dynamics simulation studies we have recently reported that the full-length Aβ peptide, whose self-assembly is associated with Alzheimer's disease, adsorbs rapi…
Initiated chemical vapor deposition (iCVD) of poly(glycidyl methacrylate) from supersaturated monomer vapor is reported. Rapid film growth rates, up to 600 nm/min, were observed. Films grown from supersaturated monomer exhibited distinct surface undulations. The temporal evolution of surface features during film growt…
Uniform quaternary Cu(2)FeSnS(4) (CITS) nanotubes of outer diameter 400-800 nm and thickness 100-200 nm have been synthesized for the first time by a simple, rapid and easily scaled-up microwave nonaqueous route using benzyl alcohol as the microwave absorbing solvent. An interesting in situ generated one-dimensional C…
Porous silica-supported metallic Pd catalysts were prepared in three steps: (1) synthesis of oleylamine-capped Pd nanoparticles, (2) silica polymerization around the oleylamine-capped Pd in a water-in-oil microemulsion system and (3) removal of the capping agent through calcination. With the characterization of transm…
The synthesis of a series of novel core-modified and fused-ring-expanded tetraphenylporphyrins is reported. Theoretical calculations and magnetic circular dichroism (MCD) and fluorescence spectroscopic measurements were used to analyze the effect of core modification with Group 16 oxygen, sulfur, selenium, and telluri…
Abstract A periodic mesoporous organosilica (PMO) with chiral cyclohexyldiamine‐based nickel(II) complexes incorporated within the silica framework was prepared through a co‐condensation of (1 R, 2 R )‐cyclohexyldiamine‐derived silane and Ph‐bridged silane followed by complexation of nickel(II) bromide in the presence…
A reliable and reproducible surface-enhanced Raman scattering (SERS) measurement utilizing Au nanoparticle-encapsulated hydrogels as a substrate has been demonstrated. A hydrogel matrix was adopted to: (i) take advantage of its excellent water uptake capacity for facile access of an analyte into the substrate and (ii)…
ZnO quantum dots with tunable size in the range of 2.0–7.8 nm were synthesized through a facile sol–gel route. Photoluminescence and photoluminescence excitation spectral examinations revealed that two types of transition mechanisms might occur under control during excitation regulation corresponding to the coexistenc…