| STUDIES ON THE EXCIMER FLUORESCENCE AND THE STERIC TACTICITY OF POLYPHENYLSILSESQUIOXANES |
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| 引用本文： | 黄超然,徐广智,张心胜,施良和. STUDIES ON THE EXCIMER FLUORESCENCE AND THE STERIC TACTICITY OF POLYPHENYLSILSESQUIOXANES[J]. 高分子科学, 1987, 0(4): 347-352 |
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| 作者姓名： | 黄超然 徐广智 张心胜 施良和 |
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| 作者单位： | Institute of Chemistry，Academia Sinica，Beijing，Institute of Chemistry，Academia Sinica，Beijing，Institute of Chemistry，Academia Sinica，Beijing，Institute of Chemistry，Academia Sinica，Beijing |
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| 摘 要： | The steric tacticity of polyphenylsilsesquioxanes (PPS) was studied by exeimer fluorescence spectroscopy. It was found that the fluorescence of PPS come mainly from its intramolecular excimers, The experimental results indicated that the steric-structure of PPS is most probably cisisotactic rather than the cis-syndiotactic as suggested in the literature. With the increase in defect content monomer fluorescence intensity increases because of the enhanced mobility of phenyl groups. Molecular weights and molecular weight distributions do not affect the fluorescence spectra of PPS.
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| 收稿时间： | 1986-12-07 |
STUDIES ON THE EXCIMER FLUORESCENCE AND THE STERIC TACTICITY OF POLYPHENYLSILSESQUIOXANES |
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| HUANG Chaoran,XU Guangzhi,ZHANG Xinsheng,SHI Lianghe. STUDIES ON THE EXCIMER FLUORESCENCE AND THE STERIC TACTICITY OF POLYPHENYLSILSESQUIOXANES[J]. Chinese Journal of Polymer Science, 1987, 0(4): 347-352 |
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| Authors: | HUANG Chaoran XU Guangzhi ZHANG Xinsheng SHI Lianghe |
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| Affiliation: | Institute of Chemistry; Academia Sinica; Beijing |
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| Abstract: | The steric tacticity of polyphenylsilsesquioxanes (PPS) was studied by exeimer fluorescence spectroscopy. It was found that the fluorescence of PPS come mainly from its intramolecular excimers, The experimental results indicated that the steric-structure of PPS is most probably cisisotactic rather than the cis-syndiotactic as suggested in the literature. With the increase in defect content monomer fluorescence intensity increases because of the enhanced mobility of phenyl groups. Molecular weights and molecular weight distributions do not affect the fluorescence spectra of PPS. |
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| Keywords: | Polyphenylsilsesquioxanes Fluorescence Excimer Steric tacticity. |
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