Characterization of the benzene-insoluble fraction of the hydrolyzate of phenyltrimethoxysilanes in the presence of benzyltrimethylammonium hydroxide |
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| Authors: | Chitsakon Pakjamsai Noritomo Kobayashi Mikio Koyano Shintaro Sasaki Yusuke Kawakami |
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| Institution: | School of Materials Science, Japan Advanced Institute of Science and Technology, Asahidai 1-1, Tatsunokuchi, Ishikawa 923-1292, Japan |
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| Abstract: | The insoluble fraction obtained from the hydrolysis and condensation of (4-dimethylamino-, 2-methyl-, and nonsubstituted)phenyltrimethoxysilanes in the presence of benzyltrimethylammonium hydroxide in benzene was characterized. IR, 1H NMR, and 29Si NMR suggested that the insoluble fraction was composed of RSi(O? )3, that is, a T3 structure. X-ray diffraction indicated the presence of a long-range ordered structure composed of a mixture of crystals. Raman spectroscopy strongly suggested a cage structure by the presence of a ring-opening vibration assignable to a cubic structure at 475–482 cm?1. © 2004 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 42: 4587–4597, 2004 |
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| Keywords: | ring-opening vibration cubic oligosilsesquioxane infrared spectroscopy Raman spectroscopy phenyltrimethoxysilane |
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