Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVCommunication to the...Communication to the EditorNEXTMain-Chain-Type Organoboron Quinolate Polymers: Synthesis and Photoluminescence PropertiesYuuya Nagata and Yoshiki ChujoView Author Information Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsu…
The techniques of neutron diffraction with isotopic substitution (NDIS) and molecular dynamics (MD) simulations have been used to examine the rotational conformation of the exocyclic hydroxymethyl group of D-glucopyranose. First order H/D NDIS experiments were performed on the H6 position in 3m aqueous glucose solutio…
To design stable biodegradable micelles with a size smaller than 20 nm, the self-assembly of methoxypoly(ethylene glycol)- b -oligocaprolactones (mPEG- b -OCLs), and the effect of OCL block length and terminal derivatization with an aromatic group were studied. The studied oligomers consisted of an mPEG block with a m…
The role of surface coating, doping, and heating on the modification of crystal structure of ZrO 2, on the local structure of Zr and Eu, and on the photoluminescence properties of Eu 2 O 3 doped and coated ZrO 2 nanocrystals has been studied. X-ray absorption fine structure measurements were carried out to understand…
Materials that display multiple carbohydrate residues have gained much attention due to their potential to inhibit or modulate biological multivalent interactions. These materials can be grouped accordingly to the way they are prepared, as unimolecular or as self-assembled systems. Both systems take advantage of the f…
In this article, the low-temperature static (adiabatic) magnetization data of the nanoscopic V15 cluster present in K6[VIV15As6O42(H2O)] x 8H2O is analyzed. The cluster anion, which attracted much attention in the past, contains a triangular VIV3 array causing frustration as a function of applied field and temperature…
The linear combination of atomic potentials (LCAP) approach is implemented in the AM1 semiempirical framework and is used to design molecular structures with optimized properties. The optimization procedure uses property derivative information to search molecular space and thus avoid direct enumeration and evaluation…
Direct excitation of acenaphthylene molecules included in a syn fashion within the octa acid nanocapsule dimerizes quantitatively to a syn dimer, and upon triplet sensitization, yields both syn and anti dimers probably by reacting within and outside the capsule.
We have synthesized the antiperovskite compound $\mathrm{Al}\mathrm{C}{\mathrm{Ni}}_{3}$ and performed a detailed study of its basic properties. The magnetic properties show that $\mathrm{Al}\mathrm{C}{\mathrm{Ni}}_{3}$ is a strongly exchange-enhanced Pauli paramagnet in the very vicinity of ferromagnetic order. The l…
A detailed study of the influence of pH on the hydrogen-bonding layer-by-layer (LBL) assembly film constructed from poly(vinylpyrrolidone) (PVPON) and poly(acrylic acid) (PAA) was carried out. It was found that the LBL assembly process of a PVPON-PAA film is very sensitive to pH. pH 4.0 is the critical value for film…
We study the effective pair interaction potentials and the resulting phase behavior, percolation transitions of nanorods dispersed in solutions of adsorbing polymers. We use polymer self-consistent-field theory in conjunction with the Derjaguin approximation to compute the polymer-mediated orientation-dependent pair i…
In 2 S 3 micropompons composed of randomly oriented flakes of ∼10 nm thickness were synthesized in high yield by a facile hydrothermal process. When the product was thermally oxidized at 600 °C, single crystalline well-faceted body-centered cubic (bcc) In 2 O 3 bipyramids of sizes between 50 and 300 nm were obtained.…
Magnetic Fe nanoparticle functionalized water-soluble multi-walled carbon nanotubules (MWNTs) were prepared, characterized and used for the removal of aromatic compounds in water and re-use.
The crystallization pathway of indium tin oxide nanoparticles during solvothermal synthesis in benzyl alcohol was investigated. The synthesis was stopped after different reaction times in the range of 1-24 h, and the structural and morphological characteristics of the products were analyzed by powder X-ray diffraction…
We have studied crystallization in poly(ethylene oxide) droplets with volumes ranging over several orders of magnitude. In all samples, homogeneous nucleation is observed, scaling with the volume of the droplet, down to systems with as few as approximately 10 polymer chains. Surprisingly, nucleation is unaffected by t…
A series of MgAl hydrotalcites (HTs) were synthesized by a sol−gel procedure with ethanol, 2-propanol, and 1-butanol as solvents. Particular attention was paid to controlling hydrolysis reactions by means of using a substoichiometric H 2 O/Al molar ratio equal to 1. The sol−gel HTs were characterized by means of therm…
By comparing data on a variety of examples, an empirical correlation for the photoelastic response of simple metal oxides is discovered and used to predict new families of zero-stress optic glasses. The birefringence induced by uniaxial stress on glass is found to correlate well with the ratio of the metal oxygen bond…
The energetic stability of diamond (100) surfaces, as a function of degree of hydrogen- and oxygen-related termination, has been studied theoretically using ab initio density functional theory. The results show that an exchange of hydrogen adsorbates with hydroxyl groups is slightly disfavored, whereas a corresponding…
Abstract The microwave‐assisted statistical copolymerization of 2‐phenyl‐2‐oxazoline with 2‐methyl‐2‐oxazoline or 2‐ethyl‐2‐oxazoline is discussed in this contribution. Kinetic studies of these statistical copolymerizations as well as reactivity ratio determinations were performed to investigate the monomer distributi…
Iron(II) triazolate coordination polymers with lipophilic sulfonate counterions with alkyl chains of different lengths have been synthesized. In hydrocarbon solvents, these polymers formed a physical gel and showed a thermoreversible spin transition upon the sol-gel phase transition. The formation of a hydrogen-bondin…