Materials Literature
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The rod symmetry groups for monoperiodic (1D) nanostructures have been applied for construction of models for bulk-like titania nanowires (NWs) cut from a rutile-based 3D crystal along the direction of a chosen crystallographic symmetry axis (in this study we consider only Ti atom-centered axes). The most stable [001]…
Coupling magnetic materials to plasmonic structures provides a pathway to dramatically increase the magneto-optical response of the resulting composite architecture. Although such optical enhancement has been demonstrated in a variety of systems, some basic aspects are scarcely known. In particular, reflectance/transm…
Titanium complexes bearing an unprecedented tridentate cyclopentadienyl-silsesquioxanate ligand provide a new class of efficient and selective catalysts for epoxidation of olefins with aqueous hydrogen peroxide under homogeneous conditions.
PURPOSE: To investigate alveolar bone regeneration after nacre implantation in comparison to β-tricalcium phosphate (β-TCP) for the potential application to bone grafting. MATERIAL AND METHODS: The rod-shaped, 2 × 2 mm in diameter and length, implanted materials were prepared from nacre particles of the giant oyster (…
Although never emphasized and increasingly used in organic electronics, PEDOT-PSS (poly(3,4-ethylenedioxythiophene)-poly(styrene sulfonate)) layer-by-layer (lbl) film construction violates the alternation of polyanion and polycation rule stated as a prerequisit for a step-by-step film buildup. To demonstrate that this…
The strong desire for the extensive application of supercritical carbon dioxide (scCO 2 ) as an environmentally benign solvent in polymers synthesis and processing has spurred numerous attempts to discern and improve its solvability toward monomers as well as polymers. The detailed solvation processes along with the p…
We report the anisotropic atomic expansion dynamics of multi-walled carbon nanotubes, using 4D electron microscopy. From time-resolved diffraction on the picosecond to millisecond scale, following ultrafast heating at the rate of 10(13) K/s, it is shown that nanotubes expand only in the radial (intertubule) direction,…
DFT and TDDFT methods have been performed to investigate the photoisomerization effect for dithiazolylarylene on solution. The weak S···N interaction and CH···N hydrogen bond restrain the rotation of the side-chain thiazolyl ring in open-isomer 1a, the higher stability of which prefers to show a high quantum yield of…
Abstract PVC/CaCO 3 polymer nanocomposites of differing compositions were produced using a two‐roll mill and compression molding. In all formulations, 0.6 phr of titanate was incorporated to assist dispersion during processing. The morphology was observed using transmission electron microscopy, and the static and dyna…
Flexible packaging films for highly sensitive products that are to be protected against moisture and oxygen need high barrier materials. In the food and pharmaceutical packaging industries, barrier films, which contain a single inorganic layer on top of a polymeric substrate, provide sufficient barrier. For the protec…
Ai-Xiang Tiana*, Xiao-Ling Lina, Yu-Jing Liua, Gui-Ying Liub, Jun Yinga, Xiu-Li Wanga & Hong-Yan Lina a Department of Chemistry , Bohai University , Jinzhou 121000 , P.R. China b Liaoning Ocean and Fisheries Science Research Institute , DaLian 116023 , P.R. China * E-mail: tianax717@163.com Through tuning the oxidatio…
Direct meso-alkynylation of β,β'-dipyridylporphyrin with various alkynyllithium reagents has been achieved, in which the β,β'-dipyridyl groups play an important role in facilitating the nucleophilic addition of the reagents through double coordination. This method enabled the synthesis of a meso-ethynylene-bridged dip…
This paper describes the influence of polydopamine surface modifications on the adhesion strength of electroless deposited copper on roughened epoxy resin substrates. The surfaces are characterized with XPS and ToF-S-SIMS. Next, a thorough investigation of the copper–epoxy interface is performed using SEM. Both the po…
Diamond-like nanocomposite (DLN) thin films were deposited on pyrex glass substrate using different flow rate of haxamethyldisiloxane (HMDSO) based liquid precursor with nitrogen gas as a glow discharged decomposition by plasma enhanced chemical vapor deposition (PECVD) technique. The significant influence of differen…
A facile method for the covalent functionalization of single-walled carbon nanotubes (SWNTs) with thermoresponsive core cross-linked (CCL) polymeric micelles is presented. This method is based on SWNT functionalization as well as polymer self-assembly. The copolymer, poly( N,N -dimethylacrylamide)- b -poly( N -isoprop…
Bis(β-ketoimine) ligands, [R{N(H)C(Me)-CHC(Me)═O}(2)] (L(1)H(2), R = (CH(2))(2); L(2)H(2), R = (CH(2))(3)), linked by ethylene (L(1)) and propylene (L(2)) bridges have been used to form aluminum, gallium, and indium chloride complexes [Al(L(1))Cl] (3), [Ga(L(n))Cl] (4, n = 1; 6, n = 2) and [In(L(n))Cl] (5, n = 1; 7, n…
We present a crystal plasticity model that incorporates cross-slip of screw dislocations explicitly based on dislocation densities. The residence plane of screw dislocations is determined based on a probability function defined by activation energy and activation volume of cross-slip. This enables the redistribution o…
The ternary stereocomplex formation of optically active polyesters, l-configured poly(l-2-hydroxybutanoic acid) [P(l-2HB)] and d-configured poly(d-2-hydroxybutanoic acid) [P(d-2HB)] and poly(d-lactic acid) (PDLA), is reported. Ternary P(l-2HB)/P(d-2HB)/PDLA blends were prepared by solution-casting to have a fixed cont…
Abstract In this study we analyzed the phase and state transitions of shape‐memory polymers (SMPs)/solvent mixtures using the Flory–Huggins (FH) theory by extension of Vrentas and the Couchman–Karasz theory for glass transition, as well as Clausius–Clapeyron relation for melting transition. Using scaling relations of…
This paper describes a method for enhancing the electron transition among carbon nanotubes (CNTs) by integrating CNTs with a polar mineral tourmaline having spontaneous electric fields for conductive polymer composites. The thin polymer layer at the surfaces of CNTs raises the potential barrier of electron transition…