Materials Literature
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The homopolymer of butyl isopropenyl ether (pBPE) and a series of homo- and copolymers of BPE and decyl isopropenyl ether (DPE) with acrylates and methacrylates fluorinated on the vinyl and/or the alkoxy group were synthesized by cationic (pBPE) or free-radical process. The three structurally analogous 1,1,1,3,3,3-hex…
This paper investigates effects of using monodisperse inverse analyses to extract particle-particle and particle-surface potentials from simulated interfacial colloidal fluids of polydisperse attractive particles. Effects of polydispersity are investigated as functions of particle concentration and attractive well dep…
Molecular-dynamics simulations are utilized to simulate solvation forces between two nanoparticles immersed in a Lennard−Jones liquid. Four different sizes and shapes of solvophilic nanoparticles are investigated. For nanoparticles at a fixed orientation, we find that the solvation forces oscillate between attraction…
The segmental dynamics of bulk poly(methyl acrylate) (PMA) were studied as a function of molecular mass in the glass-transition region using 2H NMR and modulated differential scanning calorimetry (MDSC). Quadrupole-echo 2H NMR spectra were obtained for four samples of methyl-deuterated PMA-d3 with different molecular…
Layered cobaltates embody novel realizations of correlated matter on a spin-1/2 triangular lattice. We report a high-resolution systematic photoemission study of the insulating cobaltates. The observation of a single-particle gap opening and band folding provides direct evidence of anisotropic particle-hole instabilit…
Transmission electron microscopy and electron energy loss spectroscopy (EELS) were used to distinguish structural details for the cubic and uncommon monoclinic crystal phases of heavy metal rare earth oxide nanoparticles synthesized by a combustion process. Specifically, we systematically examined the EELS oxygen K ed…
A simple, productive and low-cost route has been developed to synthesize multi-armed CdTe nanorods using myristic acid (MA) as a complex agent. The yield of this approach can reach 75%. The dimension of the multi-armed nanorods can be controlled by tuning the molar ratios of Cd/Te and Cd/MA; the diameter can be change…
A detailed elaboration of the transformations of iron species, present in natural and Fe(NO(3))(3) loaded montmorillonite, during carbon deposition and carbon nanotube growth is described. According to transmission electron microscopy results, deposited carbon atoms form fibres in the case of pristine montmorillonite…
Inserting peptide nanotubes into lipid bilayers modulates the permeability properties of the cell wall, thus conferring potential bacteriocidal capability. Interaction of a peptide nanotube formed by eight cyclo[RRKWLWLW] subunits with the surface of a hydrated dimyristoylphosphatidylcholine bilayer is investigated us…
Abstract The morphological manipulation, structural characterization, and photoluminescence properties of different CdSe nanocrystals are reported. Several different CdSe structures, including nanowires, nanorods, nanoparticles, and tetrapod crystals, have been grown on silicon substrates by means of simple, Si‐assist…
Abstract We have used positron annihilation spectroscopy to study the vacancy defects in ZnO crystals grown by both the conventional and contactless chemical vapor transport (CVT and CCVT). Our results show that Zn vacancies or Zn vacancy related defects are present in as‐grown ZnO, irrespective of the growth method.…
Abstract The crystallization and melting behavior of isotactic polypropylene (iPP) and polypropylene copolymer ( co ‐PP) containing silicon dioxide (SiO 2 ) were investigated by differential scanning calorimeter (DSC). SiO 2 had a heterogenous nucleating effect on iPP, leading to a moderate increase in the crystalliza…
Abstract The synthesis of polymer‐matrix‐compatible amphiphilic gold (Au) nanoparticles with well‐defined triblock polymer poly[2‐( N,N ‐dimethylamino)ethyl methacrylate]‐ b ‐poly(methyl methacrylate)‐ b ‐poly[2‐( N,N ‐dimethylamino)ethyl methacrylate] and diblock polymers poly(methyl methacrylate)‐ b ‐poly[2‐( N,N ‐d…
Abstract Dendrons, also called dendritic wedges, are a special variety of dendrimers possessing one or two functional groups at the core, in addition to the numerous functional end groups. This review is focused on phosphorus‐containing dendrons, which are dendrons built with one phosphorus atom at each branching poin…
In soil environments, particularly at the soil–plant interface, organic and inorganic ligands may compete with each other for sorption sites onto soil components. The interaction between two or more ligands has a great importance for understanding the adsorption/desorption processes of a given ligand in soil. We studi…
We have measured the valence-band photoemission and inverse photoemission spectra of single-walled carbon nanotubes (SWNTs) with mean radii of 0.7 and $0.64\phantom{\rule{0.3em}{0ex}}\mathrm{nm}$ encapsulating ${\mathrm{C}}_{60}$ fullerenes (peas), so-called ``peapods.'' The photoemission spectrum of the ${\mathrm{C}}…
Abstract We performed high pressure Raman experiments on purified open‐ended single wall carbon nanotubes using different pressure transmitting media (paraffin oil, argon and 4:1 methanol ethanol mixture) and two excitating wavelength (514.5 nm and 632.8 nm). We state that the behavior of the Raman spectrum under pres…
In this communication, we discuss the design, synthesis, and characterization of four peptides which are able to self-assemble into five different homo- and heterodimeric alpha-helical coiled coils based on the pH of their environment. These peptides are very short, containing only 14 or 21 amino acids each, and illus…
Abstract The nanocomposites of nitrile–butadiene rubber (NBR) and organo‐montmorillonite modified by hexadecyltrimethyl ammonium bromide (HMMT) were prepared by the reactive mixing intercalation method in the presence of the resorcinol and hexamethylenetetramine complex (RH). The structure of the NBR–RH–HMMT nanocompo…
Abstract Blends of elastomeric chlorinated polyethylene (CPE) and natural rubber (NR) at the blend composition ratio of 80/20 CPE/NR with various precipitated silica loadings from 0 to 30 phr were prepared. Their rheological behaviors were determined using two rheometers with different shear modes, i.e., the oscillato…