Studies on the fluorescence quenching of polysilane copolymers by chlorohydrocarbons
文献类型：期刊论文
| 作者 | Li, GQ; Chen, DB; Bai, FL; Mo, YM |
| 刊名 | JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS
 |
| 出版日期 | 1996-07-15 |
| 卷号 | 34期号:9页码:1583-1589 |
| 关键词 | Polysilane Competitive Fluorescence Quenching Critical Quencher Concentration Energy Transfer Outside Heavy Atom Effect |
| ISSN号 | 0887-6266 |
| 英文摘要 | The room-temperature solution fluorescence quenching of polysilane copolymers by chlorohydrocarbons such as CCl4, CHCl3, C2Cl6, and Cl2CHCHCl2 was studied. The existence of dynamic quenching was preliminarily demonstrated by the experiment of fluorescence lifetime quenching. The fluorescence quenching data were in conformity with the equation: F-0/F = (1 + K-SV[Q])exp(NV[Q]), where F and F-0 are the fluorescence intensity with and without the addition of quencher, K-SV is the Stern-Volmer constant, [Q] is the quencher concentration, N is the Avogadro constant, and V is the volume of the active sphere. The fluorescence quenching by the first three chlorohydrocarbons was attributed to the contemporaneous effect of dynamic quenching and static quenching. There exists, at least mathematically, a critical quencher concentration [Q](c) When the quencher concentration [Q] < [Q]c, the fluorescence quenching is dominated by the dynamic quenching part; when [Q] > [Q](c), it is dominated by the static quenching part. However, the fluorescence quenching by Cl2CHCHCl2 was attributed to only static quenching. Furthermore, it was proposed that the dynamic quenching may be related with the electrical positivity of the central carbon nucleus of the quenching molecules while the static quenching may be caused by the ''outside heavy atom effect'' of the Cl element. (C) 1996 John Wiley & Sons, Inc. |
| 语种 | 英语 |
| WOS记录号 | WOS:A1996UT32600011 |
| 出版者 | JOHN WILEY & SONS INC |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/44583]  |
| 专题 | 中国科学院化学研究所 |
| 作者单位 | 1.SICHUAN UNION UNIV,DEPT CHEM,CHENGDU 610064,PEOPLES R CHINA 2.CHINESE ACAD SCI,INST CHEM,BEIJING 100080,PEOPLES R CHINA |
| 推荐引用方式 GB/T 7714 | Li, GQ,Chen, DB,Bai, FL,et al. Studies on the fluorescence quenching of polysilane copolymers by chlorohydrocarbons[J]. JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS,1996,34(9):1583-1589. |
| APA | Li, GQ,Chen, DB,Bai, FL,&Mo, YM.(1996).Studies on the fluorescence quenching of polysilane copolymers by chlorohydrocarbons.JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS,34(9),1583-1589. |
| MLA | Li, GQ,et al."Studies on the fluorescence quenching of polysilane copolymers by chlorohydrocarbons".JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS 34.9(1996):1583-1589. |
入库方式： OAI收割
来源：化学研究所
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