Materials Literature
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Submicrometer single crystal diffractometry for highly accurate structure determination was developed using the extremely stable and highly brilliant synchrotron radiation from SPring‐8. This was achieved using a microbeam focusing system and the submicrometer precision low‐eccentric goniometer system. We demonstrated…
A microwave-assisted synthetic procedure is presented for the preparation of low-toxic Mn:ZnSe/ZnS core/shell nanocrystals to label antibodies for selective detection of human immunoglobulin G (IgG) based on fluorescence resonance energy transfer (FRET) between the Mn:ZnSe/ZnS and Au nanoparticles (AuNPs).
The use of phosphonic acids in the synthesis of mixed-metal CeMn complexes has led to the formation of two phosphonate complexes with unusual topologies: [Ce(2)Mn(6)O(6)(OH)(5)(t-BuPO(3))(6)(O(2)CMe)(3)] x 53 H(2)O (1 x 53 H(2)O) and [Ce(22)Mn(12)O(34)(MePO(3))(12)(O(2)CMe)(33)(OMe)(6)(NO(3))(H(2)O)(12)](n) (2). The t…
This paper reports on phase transition photo-induced by a nanosecond laser pulse in the molecular spin crossover material [Fe(NH(2)-trz)(3)] (Br)(2).3H(2)O (with NH(2)trz = 4-amino-1,2,4-triazole) around room temperature and in the close vicinity of the thermal hysteresis loop. The measurements are carried out using a…
Silver spike arrays with triangular sharp edges were prepared by using a self-organization process based on the condensation of water droplets and the vapor deposition process. Strongly enhanced Raman scattering of rhodamine 6G on the spike arrays were shown.
A new FRET-based, photoswitchable fluorescent dyad derived from a spiropyran-polythiophene conjugate was developed and applied to the detection of cyanide anion.
Cylindrical ferromagnetic nanowires encapsulated inside multiwalled carbon nanotubes (MWNTs) are synthesized by pyrolyzing either ferrocene powder or ferrocene–toluene mixtures. By changing the way the precursor is thermolyzed, we have been able to control the composition of the ferromagnetic byproducts. In particular…
To understand the codoping synergistic effects in metal oxide semiconductors with wide band gaps as photocatalysts, we chose N-doped SrTiO(3) as a host to determine the effects of some nonmetal and metal codopants on it by performing the first-principles calculations for N/H-, N/X- (X = F, Cl, Br, I), N/M(1)- (M(1) =…
Colloidal CdX (X = Se, S, and Te) and their core/shell quantum dots (QDs) have narrow and size-dependent emission spectra, multicolor excitation with large extinction coefficients, and excellent photostability against photobleaching. Because of these unique photoluminescence properties of QDs over conventional fluores…
Abstract: Numerous new cases of preserved shell microstructure were discovered in molluscs from the Middle Cambrian Gowers Formation (Ptychagnostus atavus/Peronopsis opimus Zone, Floran Stage) in the Georgina Basin, Australia. The new data provide further evidence that, by the Middle Cambrian, molluscan shell microstr…
A new gelator was discovered by identifying molecular scaffolds exhibiting 1D intermolecular interactions in the solid-state and synthesizing derivatives. Gelation can be triggered by adding Hg(OAc)(2) to a precursor molecule. The in situ gelation is selective for Hg(2+) over other metals.
Large-flake graphene membranes up to 300 microm(2) can be exfoliated from graphite by oleyl amine based on solvothermal conditions. The exfoliated graphene sheets are of high quality and have few defects. The graphene dispersion, predominantly composed of monolayer graphene, had a high concentration of 0.15 mg ml(-1),…
Open-field aluminum-nickle-cobalt magnets have been used in prosthodontics for many years, but success has been limited because these magnets are susceptible to corrosion by the saliva and because their retentive force is weak relative to the initial retention offered by mechanical attachments. More recently, magnets…
Monolayer protected gold nanoparticles (MPGN) coated with metal chelating groups were prepared. In the presence of Ce(IV), the MPGN proved to be highly active in promoting the hydrolytic cleavage of the DNA model bis-p-nitrophenyl phosphate (BNP). A 2.5 million-fold rate acceleration of the BNP hydrolysis was measured…
A single energy storage element (ESE) has been used in fuel cell (FC) vehicles to improve the FC dynamic response and to recover the braking energy. An energy storage system (ESS) consisting of hybrid ESEs extends the capabilities of single ESE and is, therefore, capable of achieving an optimized performance with impr…
A series of cyanoethyl cellulose (CEC) samples were synthesized from cellulose in NaOH/urea aqueous solutions by a homogeneous method. Structure and properties of CECs were characterized with FT-IR, 1H and 13C NMR, DSC, SEC-LLS, polarized light microscopy and solubility measurements. The total DS values of the obtaine…
Citric-acid-derived thermally cross-linked biodegradable elastomers (CABEs) have recently received significant attention in various biomedical applications, including tissue-engineering orthopedic devices, bioimaging and implant coatings. However, citric-acid-derived photo-cross-linked biodegradable elastomers are rar…
Mixtures of the plastic crystal material choline dihydrogen phosphate [Choline][DHP] and phosphoric acid, from 4.5 mol% to 18 mol% H(3)PO(4), were investigated and shown to have significantly higher proton conductivity compared to the pure [Choline][DHP]. This was particularly evident from the electrochemical hydrogen…
This review article is a first attempt to give a systematic and comprehensive description (in the framework of the unified theoretical approach) of the exchange interactions in polynuclear systems based on orbitally degenerate metal ions in the context of their relevance to the modern molecular magnetism. Interest in…
The kinetics of the crystallization of thermoresponsive poly(2-isopropyl-2-oxazoline) in water and the time-dependent evolution of the morphology were examined using wide-angle X-ray scattering and conventional and cryogenic scanning electron microscopy. Results indicate that a temperature-induced phase separation pro…