Materials Literature
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Polycrystalline ZnO : Cu-based film photodetectors with extended detection waveband (UV and visible light) were fabricated using facile colloidal chemistry and a post-annealing process. The obtained detectors are highly sensitive to visible light and can realize the response switch between UV and visible light. A nati…
The system Y2Sn2−xZrxO7 (0.0 ≤ x ≤ 2.0) undergoes a phase transformation from ordered pyrochlore (Fdm) to defect fluorite (Fmm) actuated by the substitution of Zr for Sn. X-ray diffraction patterns map the retention of the pyrochlore structure up to x = 1.2. For samples with x = 1.4–2.0 the structure can be described…
This manuscript reports a new method to solve the conflict between the flame retardance and anti-dripping of poly(ethylene terephthalate) by introducing azobenzene groups into the main-chain. This novel polyester containing azobenzene units in the main chain (PEAT) was synthesized via esterification and copolycondensa…
A new dithienophosphole-based donor-acceptor conjugated luminophore shows a large halochromic effect on its emission color that changes from red to green upon addition of acid. White light emission can be generated upon partial protonation resulting in a broad emission band.
A bifunctional peptide was designed to in situ reduce Cu ions and anchor a Cu cluster. The peptide-Cu cluster probe, mainly composed of Cu14, emitted blue two-photon fluorescence under femtosecond laser excitation. Most important, the probe can specifically mark the nuclei of HeLa and A549 cells, respectively.
The BCS theory of superconductivity named electron-phonon interaction as a glue that overcomes Coulomb repulsion and binds fermions into pairs which then condense and super-conduct. We review recent and not so recent works aiming to understand whether a nominally repulsive Coulomb interaction can by itself give rise t…
The distinction between thermodynamic and kinetics in cellulose dissolution is seldom considered in the literature. Therefore, herein an attempt to discuss this topic and illustrate our hypotheses on the basis of simple experiments was made. It is well-known that cellulose can be dissolved in a aqueous sodium hydroxid…
Non-basal slip systems in the Mg12ZnY long-period stacking ordered (LPSO) phase, the operational frequency of which is increased at high-temperatures and affects the mechanical properties, were clarified. The {1\bar{1}00}<11\bar{2}0> prism slip was identified in both 18R and 14H LPSO phases, even though they have the…
Multimodal imaging that aims to advance imaging by strategically combining existing technologies with uniquely designed probes has attracted great interest in recent years. Here, Gd3+-functionalized gold nanoclusters (Gd-AuNCs) were synthesized for dual model (fluorescence/magnetic resonance) imaging. We designed a cy…
Hierarchical architectures attract a large number of scientists and engineers because of their unique physicochemical properties compared with bulk materials and their precursors. It is believed that intermolecular interactions play a key role in the formation of these hierarchical architectures. However, the principl…
Although tremendous effort has been focused on enhancing the mechanical properties of nacre-mimetic materials, conservation of high stiffness and strength against hydration-induced decay of mechanical properties at high humidity remains a fundamental challenge in such water-borne high-performance materials. Herein, we…
The pressure-induced formation of a hexagonal phase ( P 6 /m , Z = 2) of LiN 3 is predicted by particle swarm optimization (PSO) structural search at zero temperature and pressure of > 34.7 GPa. Compared to the ground-state insulator C 2 /m phase, the P 6 /m -LiN 3 is found to possess a metallic feature dominated by t…
We describe a nanocomposite based on solution styrene butadiene rubber (SSBR) and naturally occurring tube-like nanoparticles called halloysite nanotubes (HNT). Highly hydrophilic HNT nanotubes were modified by different silane coupling agents namely diethoxydimethyl silane (DMS) and bis[3-(triethoxysilyl)propyl]tetr…
Carbon nanotubes (CNTs) were introduced into the poly(L-lactide)/thermoplastic polyurethane (PLLA/TPU) blend to prepare the ternary nanocomposites. The results showed that CNTs selectively localized in the TPU phase, leading to a morphological change from the sea-island morphology to the quasi-cocontinuous morphology.…
This paper describes the structure and properties of end-tethered anionic polyelectrolyte brushes containing counterions of tri-valent ruthenium hexamine (Ru(NH3)63+) and mono-valent sodium (Na+). Detailed studies of these planar brushes composed of the strong polyelectrolyte, poly(sodium styrenesulfonate), were perfo…
Magnetic microspheres hold great promise for reaching the goal of controlled and site specific drug delivery. Magnetic microspheres as an alternative to traditional radiation methods which uses highly penetrating radiations that is absorbed throughout the body. Its use is limited by toxicity and side effects. Now days…
Poly(lactic acid) (PLA) and poly(butylene succinate) (PBS) were blended in a twin screw extruder at various contents of PBS from 0-50 wt%. PLA/PBS blends were melt spun using a single screw extruder equipped with multifilaments spinnerette. The effect of PBS contents on morphology, thermal and mechanical properties of…
The reinforcement of plastic polymers by using the synergetic effects of two different fillers has sparked great interest, however, few works have been devoted to elastomers. In the present work, a tannic acid functionalized graphene (TAG) aqueous dispersion was prepared and hybridized with tubular clay, halloysite na…
Polymer nanocomposites of polystyrene matrix containing 10% wt of organo‐montmorillonite (organo‐MMT) were prepared using the solution method with sonication times of 0.5, 1, 1.5, and 2 hours. Cetyltrimethylammonium bromide (CTAB) is used to modify the montmorillonite clay after saturating its surface with Na + ions.…
Reactions of [Et4N][TpMoS(S4)] with three equiv. of CuI in MeCN or in pyridine gave rise to one dicubane and one tetracubane anionic clusters, [Et4N]2[{TpMo(μ3-S)3Cu3I}2(μ-I){Cu(μ-I)2(μ4-I)2}] and [PyH][{TpMo(μ3-S)4Cu3}4(μ12-I)], and their third-order nonlinear optical (NLO) responses were greatly enhanced relative to…