Temperature dependence of the fluorescence spectra of ladderlike polyphenylsilsesquioxane and ladderlike 1,4-phenylene-bridged polyvinylsiloxane
文献类型：期刊论文
| 作者 | Yang, JL; Bai, FL; Liu, CQ; Liu, Y; Xie, P; Zhang, RB |
| 刊名 | CHINESE JOURNAL OF POLYMER SCIENCE
 |
| 出版日期 | 2002 |
| 卷号 | 20期号:1页码:15-23 |
| 关键词 | Ladderlike Polyphenylsilsesquioxane Polyvinylsiloxane Fluorescence Spectra Temperature Dependence Ladderlike 1 4-phenylene-bridgd |
| ISSN号 | 0256-7679 |
| 英文摘要 | Fluorescence spectra of ladderlike polyphenylsilsesquioxane (LPPS) and ladderlike 1,4-phenylene-bridged polyvinylsiloxane (LPPVS) have been measured as a function of temperature (4-55 degreesC), in dilute tetrahydrofuran solution. The excimer (IF) to monomer (I-M) intensity ratio (I-E/I-M) of LPPS dilute solution shows a double linear Arrhenius plot with a break point ascribable to a transition temperature Tt. This behavior has not been found for single chain polyorganosiloxanes. When In/(E) of LPPS was plotted against 1/T, it also gave a double linear plot with one break point, which was found in single chain polyorganosiloxanes. The different behaviors between LPPS and single chain polyorganosiloxanes may be mainly attributed to the relatively rigid double-chain macromolecular backbone of LPPS. However, the 1n(I-E/I-M) of dilute LPPVS solution versus 1/T shows a simple linear variation with a positive slope which confirms our proposition. The difference between the fluorescence results of LPPS and those of LPPVS may possibly derive from their structure differences and cooperative motion in backbone chain bonds. |
| 语种 | 英语 |
| WOS记录号 | WOS:000173022100003 |
| 出版者 | SPRINGER-VERLAG BERLIN |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/78721]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Zhang, RB |
| 作者单位 | 1.Chinese Acad Sci, Inst Chem, Ctr Mol Sci, Polymer Chem Lab, Beijing 100080, Peoples R China 2.China Petrochem Corp, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, JL,Bai, FL,Liu, CQ,et al. Temperature dependence of the fluorescence spectra of ladderlike polyphenylsilsesquioxane and ladderlike 1,4-phenylene-bridged polyvinylsiloxane[J]. CHINESE JOURNAL OF POLYMER SCIENCE,2002,20(1):15-23. |
| APA | Yang, JL,Bai, FL,Liu, CQ,Liu, Y,Xie, P,&Zhang, RB.(2002).Temperature dependence of the fluorescence spectra of ladderlike polyphenylsilsesquioxane and ladderlike 1,4-phenylene-bridged polyvinylsiloxane.CHINESE JOURNAL OF POLYMER SCIENCE,20(1),15-23. |
| MLA | Yang, JL,et al."Temperature dependence of the fluorescence spectra of ladderlike polyphenylsilsesquioxane and ladderlike 1,4-phenylene-bridged polyvinylsiloxane".CHINESE JOURNAL OF POLYMER SCIENCE 20.1(2002):15-23. |
入库方式： OAI收割
来源：化学研究所
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