Materials Literature
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In this paper, we first report on direct-photolithography-based microfabrication of transparent super-hydrophobic micropatterns using novel photodefinable nanocomposites, combining the nanomorphology and hydrophobicity of polytetrafluoroethylene (PTFE) nanoparticles and the photopatternability and transparency of an S…
The adsorption and aggregation processes of Ag nanoparticles versus Au nanoparticles onto a poly(4-vinylpyridine) (P4VP) surface has been investigated by means of quartz crystal microbalance (QCM), atomic force microscopy (AFM), and Raman scattering spectroscopy. Both the QCM and AFM data indicated that the citrate-re…
End-to-end connectivity of Au nanorods (NRs) employing bis(terpyridine)–metal (FeII or CdII) complexes has been demonstrated, along with their facile disassembly and reassembly. Biased surfactant adsorption at the side-walls allowed the predominant, end-facet modification of the NRs. Characterization included UV/Vis a…
Abstract Crystals of PbS with different sizes were obtained by chemical deposition from aqueous solution (chemical bath deposition technique) onto undoped Si (100) substrate. The morphology and size of crystals were analyzed by high resolution scanning electron microscopy. The fine structure of Pb 4f and S 2p photoele…
(R)-(+)-Binol-functionalized chiral periodic mesoporous organosilicas (PMOs) with different framework compositions were successfully synthesized by cocondensation of (R)-2,2'-di(methoxymethyl)oxy-6,6'-di(1-propyltrimethoxysilyl)-1,1'-binaphthyl (BSBinol) with 1,2-bis(trimethoxysilyl)ethane (BTME) and tetramethoxysilan…
We demonstrate that photochromism based on light-driven reversible C−N single bond cleavage can enable rapid coloration upon UV light irradiation and successive fast thermal back-reaction within tens of microseconds at room temperature. According to Marcus theory, the thermal back-reaction would be accelerated with in…
The authors report the growth of ß-Ga2O3nanowires by heating the GaN-sapphire template and the fabrication of a ß-Ga2O3nanowire photodetector by depositing interdigitated contact electrodes. It was found that the average length and diameter of the ß-Ga2O3nanowires were around 10 ¿m and 100 nm, respectively. It was als…
Porous PZT ceramics were prepared by two approaches: burnable plastic spheres (BURPS) process with varied percentages (2.5, 5.0, 7.5, 10.0, and 12.5 wt%) of stearic acid as the pore‐forming agent and tert‐butyl alcohol‐based gel casting with different initial solid loadings (10, 15, 20, and 25 vol%). The resultant sam…
Multi-walled carbon nanotubes from 8 to 63 nm in diameter and from 60 to 413 nm in length, were synthesized over nickel supported on a zeolite by the chemical vapor deposition of methane in the relatively low temperature range 400-550 degrees C. The carbon deposited was analyzed by x-ray powder diffraction, Raman spec…
We show by first-principles calculations that the magnetic moments of zigzag ZnO nanoribbons can be efficiently modulated by transverse electric fields. Depending on the field direction, the total magnetic moment in a zigzag ZnO nanoribbon can be remarkably enhanced or reduced and even completely quenched with increas…
Transportation, release behavior, and stability of a green fluorescent protein (GFP, 3x4 nm) in self-assembled organic nanotubes with three different inner diameters (10, 20, and 80 nm) have been studied in terms of novel nanocontainers. Selective immobilization of a fluorescent acceptor dye on the inner surface enabl…
The growth kinetics of ZnO nanorods in methanol is studied by a combination of scanning and high-resolution transmission electron microscopy and X-ray diffraction analysis. In the early stage of growth oriented attachment of 2−3 spheroidal crystallites to rod-like structures occurs. Later, rods of up to 90 nm in lengt…
A techno-economic optimization study investigating optimal design and operating strategies of solid oxide fuel cell (SOFC) micro-combined heat and power (CHP) systems for application in U.S. residential dwellings is carried out through modeling and simulation of various anode-supported planar SOFC-based system configu…
Thermoresponsive polymer brushes on 20 nm colloidal gold were formed through atom transfer free radical polymerization (ATRP) of N -isopropylacrylamide (NIPAAm) in aqueous media. In this approach, the “grafting-from” technique was used with atom transfer radical polymerization (ATRP) to grow polymer chains from the su…
The mechanism of the ring-opening polymerization (ROP) of lactide catalyzed by two partner hydrogen-bonding organocatalysts was explored. New amidoindoles 4 a,c, thioamidoindoles 4 b,d, amidobenzimidazoles 5 a,c, and thioamidobenzimidazoles 5 b,c were synthesized and used as activators of the monomer. In the solid sta…
Meso-substituted A(4)-porphyrins bearing 3,4,5-trialkoxyphenyl substituents are efficiently synthesized and characterized. Porphyrins bearing twelve C10 and C11 alkyl chains turned out to be liquid at room temperature. The remaining porphyrins, bearing C8, C9, C12, and C18 alkyl chains, have low melting points and hig…
The electronic structure of ${\text{PdCoO}}_{2}$ has been studied using the full potential linearized augmented plane wave (FP-LAPW) method employing the Perdew-Burke-Ernzerhof generalized-gradient approximations. The role of valence Pd and Co orbitals to the electrical conduction in ${\text{PdCoO}}_{2}$ has been anal…
Modeling and mimicry: an advanced computational model for the photocyclization of a furyl fulgide showed that a stable charge-transfer excited state, S(1), and the corresponding conical intersection with the ground state are responsible for the efficient photochromism observed in this system. This finding provides a r…
A new molecular design concept for colorless and multicolor light-emitting polyimides (PIs) based on excited-state proton transfer is proposed. The ultraviolet−visible optical absorption spectra and fluorescence spectra of PIs containing hydroxy groups in their anhydride moieties and their corresponding imide compound…
An unsaturated terminal diol, 1,18-octadec-9-endiol (ODEDO), and a saturated terminal diol, 1,9-nonanediol (NDO), were synthesized from oleic acid. The feasibility of utilizing these new diols for the production of thermoplastic polyurethanes (TPUs) was demonstrated by reacting them with a fatty acid-derived diisocyan…