ICCAS OpenIR
Temperature dependence of the fluorescence spectra of ladderlike polyphenylsilsesquioxane and ladderlike 1,4-phenylene-bridged polyvinylsiloxane
Yang, JL; Bai, FL; Liu, CQ; Liu, Y; Xie, P; Zhang, RB
2002
Source PublicationCHINESE JOURNAL OF POLYMER SCIENCE
ISSN0256-7679
Volume20Issue:1Pages:15-23
AbstractFluorescence 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.
KeywordLadderlike Polyphenylsilsesquioxane Polyvinylsiloxane Fluorescence Spectra Temperature Dependence Ladderlike 1 4-phenylene-bridgd
Indexed BySCI
Language英语
WOS IDWOS:000173022100003
PublisherSPRINGER-VERLAG BERLIN
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/78722
Collection中国科学院化学研究所
Corresponding AuthorZhang, RB
Affiliation1.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
Recommended Citation
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.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Yang, JL]'s Articles
[Bai, FL]'s Articles
[Liu, CQ]'s Articles
Baidu academic
Similar articles in Baidu academic
[Yang, JL]'s Articles
[Bai, FL]'s Articles
[Liu, CQ]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Yang, JL]'s Articles
[Bai, FL]'s Articles
[Liu, CQ]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.