39 Result(s)
within
Jun-Ling **ng
Chemistry
-
Article
Structures and Photoluminescence of Two Coordination Polymers Based on 2-Hydroxypyrimidine-4,6-dicarboxylic Acid
Two IIB group metal complexes based on 2-hydroxypyrimidine-4,6-dicarboxylic acid (H3L), formulated as {[Zn3L2(H2O)4]·2H2O} n (1) and {[Cd3L2(H2O)6]·H2O}
-
Article
Self-assembly and pH-responsive properties of poly(L-glutamic acid-r-L-leucine) and poly(L-glutamic acid-r-L-leucine)-b-polysarcosine
Polypeptides and polypeptoids were widely used as biomedical materials because of their good biocompatibility. In this work we reported a series of pH-responsive copolypeptides and polypeptide-polypeptoid bloc...
-
Article
Three-dimensional molecular geometry of PEG hydrogels by an “expansion-contraction” method through Monte Carlo simulations
Three-dimensional (3-D) coarse-grained Monte Carlo algorithms were used to simulate the conformations of swollen hydrogels formed by copper(I)-catalyzed azide-alkyne cycloaddition (CuAAC). The simulation consi...
-
Article
Effect of molecular weight of PEG soft segments on photo-stimulated self-healing performance of coumarin functionalized polyurethanes
Polyurethanes consisting of tri-functional homopolymer of hexamethylene diisocyanate (tri-HDI) and polyethylene glycol (PEG) are synthesized, in which photo-reversible coumarin moieties act as pendant groups. ...
-
Article
Synthesis of α-hydroxy-ω-aminotelechelic polypeptide from α-amino acid N-carboxyanhydrides catalyzed by alkali-metal borohydrides
It is reported that alkali-metal borohydrides (MBH4, M = Li, Na and K) are efficient catalysts for ring opening polymerization (ROP) of α-amino acid N-carboxyanhydrides (NCAs). Polypeptides are prepared in quanti...
-
Article
The gastrointestinal metabolic effects of oat product based-β-glucan in mice
Most physiologicalstudies studies of oat beta (β)-glucan have shown positive effects on regulation of blood glucose and lipid metabolism related to β-glucan metabolism in the gastrointestinal tract. The effect...
-
Article
Open AccessLiquid precipitation synthesis of Co3O4 for high-performance electrochemical capacitors
The amorphous Co3O4 nanostructure, which adopted sodium hexametaphosphate as structure-directing agent, has been successfully synthesized in large scale via two steps: preparation of the precursor and the calcina...
-
Article
Density functional studies on photophysical properties and chemical reactivities of the triarylboranes: effect of the constraint of planarity
The geometric and electronic structures, absorption spectra, transporting properties, chemical reactivity indices and electrostatic potentials of the planar three-coordinate organoboron compounds 1-2 and twisted ...
-
Article
A DSC study of paeonol-encapsulated liposomes, comparison the effect of cholesterol and stigmasterol on the thermotropic phase behavior of liposomes
Thermotropic phase behaviors of paeonol-encapsulated liposomes containing stigmasterol or cholesterol have been investigated by differential scanning calorimetry. We compared the thermotropic phase behavior of...
-
Article
Open AccessM cell targeting by a Claudin 4 targeting peptide can enhance mucosal IgA responses
Mucosal immune surveillance is thought to be largely achieved through uptake by specialized epithelial M cells. We recently identified Claudin 4 as an M cell target receptor and developed a Claudin 4 targeting...
-
Article
Preparation and polymerization mechanism of dihydroxy-capped PCL, poly(CL-b-PEG-b-CL) and poly(DTC-b-CL-b-DTC)
The ring opening polymerization of ε-caprolactone (CL) was initiated by glycol and yttrium tri(2,6-di-tert-butyl-4-methylphenolate)s (Y(OAr)3), preparing dihydroxy-capped poly (ε-caprolactone) (PCL) with controll...
-
Article
Synthesis and biological evaluation of 3-{[4-(4-[18F]fluorophenyl)methyl] piperazin-1-yl}-methyl-1H-pyrrolo[2,3-b]pyridine for in vivo studies of dopamine D4 receptor
The compound 3-{[4-(4-[18F]fluorophenyl)methyl]piperazin-1-yl}-methyl-1H-pyrrolo[2,3-b]pyridine ([18F]3), which is an analogue of L-745,870 binding D4
-
Article
Homopolymerization of ε-caprolactone Initiated by a Scandium Aryloxide
Ring-opening polymerization of ε-caprolactone (CL) has been firstly achieved by a novel rare earth initiator of scandium tris(2,6-di-tert-butyl-4-methylphenolate), producing PCL with Mv of 75,700 in solution poly...
-
Article
Algorithm and application of Monte Carlo simulation for multi-dispersive copolymerization system
A Monte Carlo algorithm has been established for multi-dispersive copolymerization system, based on the experimental data of copolymer molecular weight and dispersion via GPC measurement. The program simulates...
-
Article
Syntheses, Structures, Bonding, and Optical Properties of Trinuclear Cluster Iodides: M3(μ3-I)2(μ-dppm)3·I (M=Cu, Ag), dppm=bis(diphenylphosphino)methane)
The title compounds were obtained from the reactions of copper or silver monohalides with the bidentate bis(diphenylphosphino)methane (dppm) ligand at room temperature in a mixed solvent. Single-crystal X-ray ...
-
Article
Determination of traces of 237Np in environmental samples by ICP–MS after separation using TOA extraction chromatography
A simple, rapid, cost-efficient, and robust method for separation of 237Np with an extraction chromatographic column (TOA: tri-n-octylamine on Teflon powder) is outlined in detail and further improved for direct...
-
Article
Study on the systematic optimization of capillary electrophoresis using a controlled weighted centroid variable size simplex algorithm
The systematic optimization of capillary electrophoretic separations using a dynamic scouting optimum method-controlled weighted centroid variable size simplex algorithm is described. The factors affecting th...
-
Article
Conformational analysis and proteolytic processing of synthetic pre-pro-GnRH/GAP protein
Homogeneous pre-pro-GnRH/GAP protein was recently synthesized in 100 mg quantities by solid-phase methods and surprisingly, the synthetic pre-pro-protein, which normally does not escape the endoplasmic recticu...
-
Article
Calorimetric and spectroscopic examination of the solution phase structures of prekallikrein binding domain peptides of high molecular weight kininogen
Unique sequence-binding sites are exposed on the surface of high molecular weight kininogen which complex prekallikrein or factor XI with high affinity and specificity. A sequence comprising 31 residues of the...
