Journal of Inorganic and Organometallic Polymers
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Erratum: A Preliminary Study of the Toxicological Properties of Selected Polymer-Ferrocene Conjugates
Journal of Inorganic and Organometallic Polymers - Tập 11 - Trang 65-65 - 2001
Ca–O Binding of Poly[1-carboxylate-2-(N-t- butylcarbamoyl)ethylene-alt-ethylene] and Calcium Carbonate Composites
Journal of Inorganic and Organometallic Polymers - Tập 12 - Trang 99-108 - 2002
A novel poly(carboxylate) ligand was synthesized as a ligand for a crystalline CaCO3-organic composite. Poly[1-carboxylate-2-(N-t-butylcarbamoyl)ethylene-alt-ethylene] has a 7-membered ring with an intramolecular NH·O hydrogen bond between the carboxylate group and the neighboring amide NH proton in the anionic carboxylate form. The configuration of the polymer ligand was estimated with polymer re......
Characterization of Cobalt(II) Phthalocyanine Catalyst Incorporated into Poly(aminosiloxane) Matrices
Journal of Inorganic and Organometallic Polymers - Tập 9 - Trang 107-122 - 1999
Cobalt phthalocyanine (CoPc) has been incorporated into various polysiloxane matrices by adding CoPc to appropriate mixtures of tri- and tetra-alkoxysilanes during hydrolytic condensation. The matrices contained Si(CH2)3NH2 groups with alkyl or phenyl “spacer” groups between them. The cobalt content, the surface area and the pore volume all decrease as the spacer groups become larger. EPR and UV-v......
Multifunctional carbochain organosilicon polymers. I. A new approach to the synthesis of high molecular weight cyclolinear polycarbosiloxane
Journal of Inorganic and Organometallic Polymers - Tập 5 - Trang 123-133 - 1995
Controlled synthesis of high molecular weight cyclolinear polycarbosiloxanes (PCCS) is considered, using the following reactions sequence: (1) anionic polymerization of vinyldimethylphenylsilane, (2) replacement of the Ph group in polyvinyldimethylphenylsilane (M
n=83.900,M
w/M
n=1.48) by a Cl group to prepare polyvinyldimethylchlorosilane (PVMCS), and (3) hydrolytic intramolecular condensation of......
Synthesis and characterization of new poly(siloxysilanes)
Journal of Inorganic and Organometallic Polymers - Tập 4 - Trang 61-77 - 1994
The efficient synthesis of two new monomers, vinyltris(dimethylsiloxy)silane (2) and tris(dimethylvinylsiloxy)silane (3), was developed. Hydrosilation of these new A–B3 monomers affords highly branched starburst poly(siloxysilane) polymers. Polymerization of2 yields a polymer structure that has siliconhydride functional groups on the outer sphere. Polymerization of3 yields a polymer that has the s......
Synthesis and sol-gel polymerization of [Si8O12](OCH3)8
Journal of Inorganic and Organometallic Polymers - Tập 1 - Trang 335-342 - 1991
Sol-gel polymerization of [Si8O12](OCH3)8 in an inert solvent under neutral conditions has been shown to yield very high-surface area silica xerogels [P. C. Cagleet al., Mater. Res. Soc. Symp. Proc.
180, 29 (1990)]. Two recent results relevant to this process are described here. First, a practical synthetic route to [Si8O12](OCH3)8 is described that allows multigram quantities to be conveniently p......
Direct Synthesis and Characterization of High Titanium-Loading Hexagonal Mesostructured Silica Thin Films
Journal of Inorganic and Organometallic Polymers - Tập 13 - Trang 131-141
High titanium-loading hexagonal mesostructured silica thin films (Ti-HMSTF) have been successfully synthesized by carefully controlling two factors. One is the hydrolysis and condensation reaction of titanium alkoxide and the other is the aging condition of as-made Ti/Si mixed thin films. The former was controlled by adding acetylacetone (AcAc) as a Ti chelating agent. Regarding the latter, aging ......
Photochemical behavior of poly(organophosphazenes). IX. Internal photostabilization effects in (4-benzoylphenoxy) x (β-naphthoxy)2−x phosphazene copolymers
Journal of Inorganic and Organometallic Polymers - Tập 1 - Trang 53-66 - 1991
The synthesis and the photochemical behavior in solution and in films of a series of polyphosphazenes containing both benzophenone and naphthalene groups are described. The light energy absorbed by the benzophenone group is transferred to the naphthalene chromophore and wasted in photophysical processes which are not harmful to the polymer. This leads to a remarkable photostabilization of the benz......
Photochemical behavior of poly(organophosphazenes). XI. Photochemistry of poly[bis(4-benzylphenoxy) phosphazene]
Journal of Inorganic and Organometallic Polymers - Tập 2 - Trang 405-420 - 1992
In this paper we present results on the photolysis of poly[bis(4-benzylphenoxy)-phosphazene] in solution and in film, both in the presence and in the absence of molecular oxygen. Light irradiation of the polymer in oxygen-saturated CH2Cl2 solutions results in a remarkable degradation of the polyphosphazene, while in argon-purged solutions no appreciable variations of the polymer structure could be......
Si-C fiber prepared from polycarbosilane cured without oxygen
Journal of Inorganic and Organometallic Polymers - Tập 2 - Trang 161-169 - 1992
A new curing method for polycarbosilane was developed. In this method, halogenated hydrocarbon or unsaturated hydrocarbon vapor was used as curing agent. Si-C fiber with a small amount of oxygen was prepared from polycarbosilane fiber cured without introducing oxygen. The structure and the properties of the fiber are discussed in comparison with Si-C-O fiber obtained from thermal-oxidized polycarb......
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