Materials Literature
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Abstract A planar heterodinuclear phthalocyaninylnaphthalocyanine (1) in which a phthalocyanine (Pc) and naphthalocyanine (Nc) share a common benzene ring has been synthesized for the first time and its electronic absorption, magnetic circular dichroism (MCD), and fluorescence data are reported. 1 and its deprotonated…
A preclinical toxicology study of liposome encapsulated vincristine, free vincristine and empty liposomes was carried out in mice and dogs by single and multiple (daily for 5 days) intravenous injection. Single and multiple dose intravenous injection studies in mice showed the encapsulated form of vincristine to be le…
The central gap in the density of states and the localization of states on a Penrose lattice are investigated within a tight-binding model for the vertex problem. The results show that the gap is a consequence of frustration. There are surface states within the gap in a finite lattice. The correlation between the appe…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTInfluence of the Surface Atom Metallic Coordination in the Adsorption of Ethylene on a Platinum Surface: A Theoretical StudyJ.-F Paul and P. SautetCite this: J. Phys. Chem. 1994, 98, 42, 10906–10912Publication Date (Print):October 1, 1994Publication History Published online1…
BaTiO3 ultrafine particles of different size were prepared by Sol-Gel process. Their microstructure was examined at room temperature. The temperature dependence of the dielectric properties of the pressed pellets and fired ceramics of these particles was studied. With the decrease of particle size d, the Curie tempera…
A unique carboxyl proteinase (EC 3.4.23.33), insensitive to the classical inhibitor isovaleryl pepstatin and isolated from Pseudomonas sp. 101 (PCP), is the first example of a prokaryotic enzyme of this class. The gene coding for PCP was cloned, sequenced, and expressed in Escherichia coli. The gene consists of 1,761…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSolid-State Polymerization of 15,17,19,21,23,25-TetracontahexayneShuji Okada, Kikuko Hayamizu, Hiro Matsuda, Atsushi Masaki, Nobutsugu Minami, and Hachiro NakanishiCite this: Macromolecules 1994, 27, 22, 6259–6266Publication Date (Print):October 1, 1994Publication History Pu…
The electrical conductivity of In 2 O 3 ‐ ZrO 2 as well as In 2 O 3 solid solutions doped with SnO 2 , CeO 2 , Nb 2 O 5 , Pr 6 O 11 , and MgO is investigated, in the temperature range between room temperature and 1300°C, and in the oxygen partial pressure range between 5 × 10 − 5 and 1 atm. In 2 O 3 doped with ZrO 2 i…
Pure non-reactive metals develop weak interactions with iono-covalent oxides (insulators) which can be both physical (van der Waals) and chemical (low density interfacial electronic states). As a result, non-wetting is generally observed, the contact angle being larger than 90 degrees. Improvement of wetting can be ob…
Abstract Vibrational spectra of zinc tris(thiourea) sulphate (ZTS), a new semiorganic non‐linear optical crystal, were recorded to determine the symmetries of molecular vibrations. The observed Raman and infrared bands are assigned to molecular vibrations of thiourea, sulphate groups and Zn(thiourea) 3 SO 4 tetrahedra…
A focused ion beam (FIB) has been applied for transmission electron microscope (TEM) sample preparation. The sample tilt method is demonstrated to correct the cross-sectional taper shape of the TEM sample. The origin of the taper is discussed using the time-dependent surface development under the FIB trench milling. A…
A new series of chiral homologous thiobenzoates with non-chiral end chains ranging from heptyloxy to octadecyloxy has been synthesized and characterized. The mesomorphic properties have been analysed by optical microscopy on pure compounds and mixtures, DSC, and electro-optical and pitch measurements. They display a v…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis and Characterization of Poly[(R,S)-3-hydroxybutyrate-b-6-hydroxyhexanoate] as a Compatibilizer for a Biodegradable Blend of Poly[(R)-3-hydroxybutyrate] and Poly(6-hydroxyhexanoate)Hideki Abe, Yoshiharu Doi, and Yoshiharu KumagaiCite this: Macromolecules 1994, 27, 2…
Abstract Thermoreversible reaction of Diels‐Alder polymer composed of difurufuryladipate with bismaleimidodiphenylmethane was studied in dimethylformamide solution. The retro‐Diels‐Alder degradation occurred gradually at 90°C and Diels–Alder polymerization proceeded quickly at 60°C. © 1994 John Wiley & Sons, Inc.
Li 4 siO 4 , M r =119.84, λ(Mo Kα)=0.71073 A 150 K, monoclinic, P2 1 /m, a=11.532 (1), b=6.075 (1), c=16.678 (1) A, β=99.04 (4) o , V=1153.9 (2) A 3 , μ(Mo Kα)=5.3 cm -1 , Z=14, F(000)=812, D x =2.414 Mg m -3 , R=0.028, wR=0.025 for 2255 observed reflections with I>2.5σ(I). The crystal structure of lithium nesosilicat…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTQuasi-two-dimensional metallic character of Sm2Te5 and SmTe3E. DiMasi, B. Foran, M. C. Aronson, and S. LeeCite this: Chem. Mater. 1994, 6, 10, 1867–1874Publication Date (Print):October 1, 1994Publication History Published online1 May 2002Published inissue 1 October 1994https…
Fabric hand evaluation, previously applied to men's suiting, is used here to assess the touch or feel of nonwoven fabrics. In this method, fabric mechanical property parameters are converted by a first conversion equation (equation type I ) to numbers (the hand value or Hv) that express three primary hand values (the…
Dense SiC‐whisker‐reinforced mullite composites with up to 50 vol% whiskers can be obtained by tape casting and hot pressing. The tape casting process results in high degrees of SiC whisker orientation as determined visually and by X‐ray diffraction. The ability to achieve dense composites with as much as 50 vol % whi…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTUnusually Strong Adsorption of Highly Charged Heteropolytungstate Anions on Mercury Electrode SurfacesChaoying. Rong and Fred C. AnsonCite this: Anal. Chem. 1994, 66, 19, 3124–3130Publication Date (Print):October 1, 1994Publication History Published online1 May 2002Published…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDetermination of the Critical Micelle Concentration of Block Copolymer Micelles by Static Light ScatteringKarine Khougaz, Zhisheng Gao, and Adi EisenbergCite this: Macromolecules 1994, 27, 22, 6341–6346Publication Date (Print):October 1, 1994Publication History Published onl…