Materials Literature
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Upon illumination some structural defects in irradiated silicon can be excited into the metastable triplet S=1 states. These triplet states can be involved in the excess-carriers recombination process. This paper provides a theoretical treatment of spin-dependent recombination (SDR) via an excited triplet state and re…
Spectroscopic ellipsometry was utilized to follow in situ the annealing of sol‐gel Pb(Zr,Ti)O 3 films on sapphire and platinum‐coated silicon substrates. Low‐temperature processes, such as pyrolysis of organics and film densification, could be identified readily. Crystallization of the perovskite phase was initiated b…
ADVERTISEMENT RETURN TO ISSUEPREVArticleCharacterization and Photoprotection Studies of a Model .gamma.-Cyclodextrin-Included Photolabile Drug Entrapped in Liposomes Incorporating Light AbsorbersYannis L. Loukas, Pramukh Jayasekera, and Gregory GregoriadisCite this: J. Phys. Chem. 1995, 99, 27, 11035–11040Publication…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEquilibrium and Saturation Coverage Studies of Alkyl and Aryl Isocyanides on Powdered GoldKuo-Chen Shih and Robert J. AngeliciCite this: Langmuir 1995, 11, 7, 2539–2546Publication Date (Print):July 1, 1995Publication History Published online1 May 2002Published inissue 1 July…
Neutron diffraction data have been collected for hexamethylenetetramine (HMT) at 15, 50, 80, 120, 160 and 200K using a single crystal (mass 8.1 mg). The structure refinement at each temperature included two extinction parameters and third-order thermal parameters for the H nuclei. Extinction effects are very severe wi…
The effect of rubbing on the polyimide (PI) Langmuir-Blodgett (LB) surface-alignment films has been successfully evaluated by observing the temperature dependence of the polar anchoring strength of nematic liquid crystal 4-cyano-4'-n-pentylbiphenyl (5CB). Upon rubbing, the PI-LB films showed a significant increase in…
Four new chiral series with benzoate cores have been synthesized and characterized. The mesomorphic properties have been analysed by optical microscopy on the pure enantiomeric and the racemic compounds and on mixtures, by D.S.C. and by electro-optic measurements. Three of the series (hydrogenous, monofluoro-substitut…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSurface Acidity and Properties of Titania-Silica CatalystsMercedes Galan-Fereres, Luis J. Alemany, Rafael Mariscal, Miguel A. Banares, James A. Anderson, and Jose L. G. FierroCite this: Chem. Mater. 1995, 7, 7, 1342–1348Publication Date (Print):July 1, 1995Publication Histor…
Abstract Materials used in biomedical applications often function based upon their surface properties. Thus, understanding their surfaces is critical to the design and engineering of new biomaterials and medical devices. Modern surface analysis tools have been developed largely around the needs for the microelectronic…
We present a method for calculating, by computer simulation, the direct correlation function c(1,2) for a molecular liquid in the form of a spherical harmonic expansion. This allows us to test, at the most fundamental level, predictions of the structure of molecular liquids using density functional and integral equati…
The relation between the nature of the phase diagram and the pair potential is investigated on the basis of a recently introduced van der Waals theory. Both simple fluids and colloidal dispersions that admit a simple fluid description are considered. A necessary and sufficient condition for the occurrence of a liquid…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThiolato-Activated Oxo-Metal Bond Features in Molybdenum and Tungsten Oxidoreductase Models As Revealed by Raman SpectroscopyHiroyuki Oku, Norikazu Ueyama, and kira NakamuraCite this: Inorg. Chem. 1995, 34, 14, 3667–3676Publication Date (Print):July 1, 1995Publication Histor…
The electrical transport properties of epitaxial ZnO films grown on different orientations of sapphire substrates have been measured as a function of partial pressure of oxygen. After equilibration, the carrier concentration is found to change from a p ‐1/4 O2 to a p ‐3/8 O2 dependence with increasing oxygen partial p…
Abstract The design, synthesis, and properties of supermolecules consisting of well defined assemblies of linear and globular macromolecules is studied. Therefore, several families of hybrid block polymers based on polyether dendrimers linked to well‐defined blocks of polyethylene oxide, polyethylene glycol, polyester…
In the framework of microscopic theory of structural phase transitions on the basis of the cooperative Jahn-Teller effect, the phase diagrams of the ${\mathrm{Tm}}_{\mathit{x}}$${\mathrm{Lu}}_{1\mathrm{\ensuremath{-}}\mathit{x}}$${\mathrm{PO}}_{4}$ and ${\mathrm{Tb}}_{\mathit{x}}$${\mathrm{Y}}_{1\mathrm{\ensuremath{-}…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTRemote Hydrogen Plasma Chemical Vapor Deposition of Amorphous Hydrogenated Silicon-Carbon Films from an Organosilane Molecular Cluster as a Novel Single-Source Precursor: Structure, Growth Mechanism, and Properties of the DepositA. M. Wrobel, S. Wickramanayaka, Y. Nakanishi,…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOrganic-Inorganic Polymeric Hybrids Involving Novel Poly(hydroxymethylsiloxane)Shaoxiang Lu, Miryam M. Melo, Jianqun Zhao, Eli M. Pearce, and T. K. KweiCite this: Macromolecules 1995, 28, 14, 4908–4913Publication Date (Print):July 1, 1995Publication History Published online1…
We have studied the mesophase behaviour and structure of certain dimeric compounds, the α,ω-bis(4-n-alkoxyazobenzene-4′-carbonyloxy)alkanes, in which two azobenzene moieties with alkoxy tails are linked by a polymethylene spacer. The effect of the length of the (CH2)n spacer was examined by preparing four series of th…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhotoreactive Supramolecular Assemblies: Aggregation and Photoisomerization of Azobenzene Phospholipids in Aqueous BilayersXuedong Song, Jerry Perlstein, and David G. WhittenCite this: J. Am. Chem. Soc. 1995, 117, 29, 7816–7817Publication Date (Print):July 1, 1995Publication…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStructure, Thermochemistry, and Magnetic Properties of Binary Copper Carbonyls by a Density-Functional ApproachVincenzo BaroneCite this: J. Phys. Chem. 1995, 99, 30, 11659–11666Publication Date (Print):July 1, 1995Publication History Published online1 May 2002Published iniss…