Materials Literature
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Using molecular static calculations with the quantum corrected Sutten-Chen-type many-body potential, we have studied the stress and strain characteristics in nickel nanowires along [100], [110], and [111] crystallographic orientations under the equilibrium state. The main focus of this work is the size-dependent effec…
A series of dihydropyrenes with appending fluorescent moieties were synthesized with the objective of increasing the photochromic efficiency for this class of compounds and to establish how suitable fluorescence would be to follow their photochromic behavior. The ring opening quantum yields of dihydropyrenes with aroy…
We have investigated the perturbed electronic states and energy relaxation dynamics of a series of phenylene bridged Zn II porphyrin dimers to reveal the effects of phenylene bridges by using computational and time-resolved spectroscopic methods. The electronic states of Zn II porphyrin dimers are largely perturbed by…
The structural transition of Gd2O3 nanoparticles induced by high pressure, Chen, Haiyong, He, Chunyuan, Gao, Chunxiao, Ma, Yanmei, Zhang, Jiahua, Wang, Xiaojun, Gao, Shiyong, Li, Dongmei, Kan, Shihai, Zou, Guangtian
An efficient, site-specific and scalable approach has been developed to produce high-quality and individually addressable conducting polymer nanowire electrode junctions (CPNEJs) in a parallel-oriented array. Polypyrrole and PEDOT conducting polymer nanowires (CPNWs) with uniform diameters (ca. 60-150 nm) were introdu…
Fabrication of an ultra-nanocrystalline diamond-coated silicon wire array with enhanced field-emission performance, Tzeng, Yu-Fen, Liu, Kao-Hsiang, Lee, Yen-Chih, Lin, Sue-Jian, Lin, I-Nan, Lee, Chi-Young, Chiu, Hsin-Tien
The amidase from Geobacillus pallidus RAPc8, a moderate thermophile, is a member of the nitrilase superfamily and catalyzes the conversion of amides to the corresponding carboxylic acids and ammonia. It shows both amide-hydrolysis and acyl-transfer activities and also exhibits stereoselectivity for some enantiomeric s…
A novel dinuclear zirconium sandwich-type silicotungstate cluster of [(gamma-SiW(10)O(36))(2)Zr(2)(mu-OH)(2)](10-) (1) was synthesized by the reaction of a divacant lacunary gamma-Keggin silicotungstate [gamma-SiW(10)O(36)](8-) with ZrOCl(2).8H(2)O. The anion consisted of two [gamma-SiW(10)O(36)](8-) units sandwiching…
The packing structures and packing effects on excitation energies of oligomers of polyfuran (PFu), polypyrrole (PPy), polycyclopentidene (PCp), polythiophene (PTh), polyphosphole (PPh), and polysilole (PSi) are comparatively studied by employing molecular dynamics (MD) simulations and time-dependent density functional…
Cationic polyfluorene colloids are prepared and adsorbed on cellulose to obtain fibers and paper sheets with high photoluminescence (see figure). The oxidative pretreatment of cellulose allows the tailoring of the fiber uptake capacity of polyfluorene colloids and the final photoluminescence intensity. Paper sheet str…
Crop fertilisation with potassium in rainfed agriculture in India is not practised, merely on the assumption that Indian soils are rich in potassium and crops do not need external K supply. However, under continuous cropping in rainfed regions, huge crop K removals are reported, up to 150–200 kg/ha annually, depending…
A phase diagram of the pseudo-ternary Aerosol OT (AOT)+n-butanol/n-heptane/water system, at a mass ratio of AOT/n-butanol=2, is presented. Conductivity measurements showed that within the vast one-phase microemulsion region observed, the structural transition from water-in-oil to oil-in-water microemulsion occurs cont…
Nickel formate dihydrate is demonstrated to be an effective catalyst precursor for selectively synthesizing double-walled carbon nanotubes (DWNTs) with high thermal stability by using a hydrogen arc discharge technique. High-resolution transmission electron microscopy (HRTEM) observations show that the as-synthesized…
Solid acid catalysts are attractive replacements for liquid mineral acids for esterification reactions, where ester products are important for end products that are as diverse as perfumes and biofuels. Although the mechanism of homogeneous esterification has long been known, the mechanistic pathways for esterification…
In this paper, we describe that amylose almost selectively includes poly(tetrahydrofuran) (PTHF) from a mixture of poly(oxetane) (POXT) and PTHF having resemblant chemical structures and molecular weights in vine-twining polymerization. This was performed by the phosphorylase-catalyzed enzymatic polymerization of alph…
Fungal nanosynthesis of ternary CuAlO2 phase is achieved at 50 °C. This phase is chemically difficult to synthesize at low temperatures because of the incompatible oxidation chemistry of Cu and Al. The synthesized protein-capped water-dispersible nanoparticles show blue luminescence and radio-frequency absorption (see…
The switching behavior of stimuli-responsive mixed polymer brushes (d = 11 nm) was monitored for the first time in liquid phase in situ by infrared spectroscopic ellipsometry (IRSE). IRSE is presented as a new, sensitive in situ tool for online analysis of chemical changes in a thin complex film at the solid/liquid in…
Abstract Forschungszentrum Jülich is routinely operating solid oxide fuel cells (SOFCs) in stacks of planar design. Anode‐supported cells are used in combination with ferritic steel interconnects as standard components. The stacks are typically sealed with glass‐ceramics. In order to examine the long‐term interaction…
For many experiments in macromolecular crystallography, the overall structure of the protein/nucleic acid is already known and the aim of the experiment is to determine the effect a chemical or physical perturbation/activation has on the structure of the molecule. In a typical experiment, an experimenter will collect…
The degree of crystallinity in electronically conducting polymers can affect a variety of important properties such as the work function, conductivity, and charge mobility. In our previous work (O'Neil, K. D.; Shaw, B.; Semenikhin, O. A. J. Phys. Chem. B 2007, 111, 9253), we studied the distribution of the local condu…