Materials Literature
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Fast-degrading linear and branched polyanhydrides are obtained by melt-condensation of novel di- and tri-carboxylic acid monomers based on oleic and undecylenic acid synthesized using photoinitiated thiol-ene click chemistry. (1)H NMR spectroscopy, size exclusion chromatography, differential scanning calorimetry, ther…
A quasi-two-dimensional organic conductor λ-(BETS) 2 FeCl 4 [BETS = bis(ethylenedithio)tetraselenafulvalene] exhibits a new type of phase transition from a paramagnetic metal (PM) to an antiferromagnetic insulator (AFI) at a transition temperature ( T MI ) of 8.3 K under zero magnetic field. We studied its thermodynam…
Understanding how quantum dot (QD)-sensitized solar cells operate requires accurate determination of the offset between the lowest-unoccupied molecular orbital (LUMO) of the sensitizer quantum dot and the conduction band of the metal oxide electrode. We present detailed optical spectroscopy, low-energy photoelectron s…
Abstract Cross‐linked alginate capsules a few millimeters in diameter have been formed by immersion in a CaCl 2 solution. When adding cellulose whiskers or microfibrillated cellulose to the aqueous alginate solution, nanocomposite capsules containing 40 wt.% cellulosic nanoparticles were obtained. The morphology and c…
In this study, carboxylated (SWCNT-c) and pristine (SWCNT) single-walled carbon nanotubes were randomly dispersed in a hardener prior to mixing it with an epoxy resin. The influence of several parameters on the dispersion process were investigated. The produced samples were characterized by infrared spectroscopy, diff…
The interlayer space of the highly charged synthetic Na-Mica-4 can be modified by ion-exchange reactions involving the exchange of inorganic Na(+) cations by surfactant molecules, which results in the formation of an organophilic interlayer space. The swelling and structural properties of this highly charged mica upon…
The optical properties of fractal silver films grown using the Tollens silver mirror reaction enable highly reproducible single molecule surface-enhanced Raman scattering (SERS). These characteristics are a result of the nanostructure morphology which supports strongly localized surface plasmon polariton excitations t…
The design of nanoparticle-based receptors has generally focused on the design of ligand molecules for the particles' ligand shell. This study focuses on the development of supramolecular nanoparticle receptors through the mixing of two types of ligand molecules. The nanoparticle receptor is achieved via the self-asse…
It is shown that a magnetic field dramatically affects the problem of supercritical charge in graphene, making any charge in gapless theory supercritical. The cases of a radially symmetric potential well and a Coulomb center in a homogeneous magnetic field are considered. The local density of states and polarization c…
A facile strategy for preparing 1D conducting polymer nanobelts with the width of the belts down to less than 50 nm is presented. Strong enhancement in the conductivity of individual polypyrrole (PPy) nanobelts is observed, due to lengthening of the π-conjugation length of PPy belts with decreasing belt width, as conf…
Choose your favorite size: Peptide conjugates, BP–Ax–PEPAu, direct the synthesis and assembly of gold nanoparticles into well-defined hollow spherical gold nanoparticle superstructures. The diameter of the superstructures can be dialed-in by choosing the proper number of alanine residues, x: x = 2 leads to superstruct…
A new series of conjugated polyelectrolytes (CPE) consisting of an arylene–ethynylene backbone featuring phenyl (Ph), 2,1,3-benzothiadiazole (BTD), or 4,7-bis(2′-thienyl)-2,1,3-benzothiadiazole (TBT) units have been synthesized and characterized. On each polymer repeat unit the CPEs contain two branched ionic side gro…
In this paper, we describe the construction and characteristics of thermoresponsive, thin nanostructured films prepared by layer-by-layer sequential assembly of chitosan-graft-NIPAAm and alginate. FTIR and (1)H NMR spectra have confirmed the introduction of NIPAAm moieties onto the chitosan backbone. The LCST of the s…
We present DFT calculations of the energetics of the elementary reaction steps in the dehydrogenation of CH 4 to C on extended Rh(111) and Rh(211) surfaces. The results are compared to the energetics for the same reactions on a planar (111) surface and the edge atoms that are shared between two (111) facets of a nanor…
A series of polylactide-poly(ethylene glycol) (PLA-PEG) block copolymers with a high PEG fraction were synthesized by the ring-opening polymerization of L- or D-lactide in the presence of mono- or dihydroxyl PEG using nontoxic zinc lactate as a catalyst. Micelles were then prepared by direct dissolution of the obtaine…
Imaging live molecular events within micro-organisms at single-cell resolution would deliver valuable mechanistic information much needed in understanding key biological processes. We present a surface-enhanced Raman (SERS) chemical imaging strategy as a first step toward exploring the intracellular bioreduction pocke…
Phase behavior of binary blends consisting of high molecular weight polystyrene- block -poly(2-vinylpyridine) copolymer (PS- b -P2VP) and low molecular weight polystyrene- block -poly(4-hydroxystyrene) copolymer (PS- b -PHS) was investigated by using small-angle X-ray scattering and transmission electron microscopy. B…
Abstract Material property dependence on the OH−/Zn2+ molar ratio of the precursor was investigated by varying the amount of NaOH during synthesis of ZnO. It was necessary to control the water content and temperature of the mixture to ensure the reproducibility. It was observed that the structural properties, particle…
We report the synthesis and characterization of CdS(1-x)Se(x) nanorods with axial anisotropy. These nanorods were synthesized via single injection of a mixture of trioctylphosphine sulfur and selenium precursors to a cadmium-phosphonate complex at high temperature. Transmission electron microscopy shows nanoparticle m…
ADVERTISEMENT RETURN TO ISSUEPREVCommunication to the...Communication to the EditorNEXTFluorinated Microgel-Core Star Polymers as Fluorous Compartments for Molecular RecognitionYuta Koda, Takaya Terashima*, Akihisa Nomura, Makoto Ouchi, and Mitsuo Sawamoto*View Author Information Department of Polymer Chemistry, Gradu…