Carbazole-containing light-emitting polymers: Properties of excited states
文献类型：期刊论文
| 作者 | Lin, HZ; Zheng, M; Yang, JL; Bai, FL |
| 刊名 | CHINESE SCIENCE BULLETIN
 |
| 出版日期 | 2003-04-01 |
| 卷号 | 48期号:7页码:637-642 |
| 关键词 | Light-emitting Conjugated Polymers Photoinduced Energy (Charge) Transfer Sphere-of-action Fluorescence Quenching Excitation Diffusion Temperature Effects |
| ISSN号 | 1001-6538 |
| 英文摘要 | A series of light-emitting conjugated polymers alternatively involving carbazole and bivinylene arylene moieties in the main chain were synthesized via Wittig-Horner type copolymerization. The photoinduced charge transfer process relating to these polymers was investigated by using the technique of fluorescence spectroscopy. The interaction between excited copolymers and C-60 in benzene solution was studied. The fluorescence quenching can be well described by the "sphere-of-action" mechanism. It is believed that two basic steps are involved in the quenching process, i.e. the diffusion of excitation within the conjugated polymers and the dissociation of the exetions trapped by fullerene. The radius of the sphere-of-action can be related to the excitation diffusion length, which depends on the lifetime of the exciton. The dynamic fluorescence quenching of the copolymers by another quencher, 1,4-dicyanobenzene (DCB) was also surveyed. Copolymers with different chain conformations show different temperature effects in the dynamic quenching. A planar conformation is beneficial for the quenching via bimolecular collision. |
| 语种 | 英语 |
| WOS记录号 | WOS:000182411500007 |
| 出版者 | SCIENCE CHINA PRESS |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/79771]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Bai, FL |
| 作者单位 | Chinese Acad Sci, Inst Chem, Ctr Mol Sci, Lab Organ Solids, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lin, HZ,Zheng, M,Yang, JL,et al. Carbazole-containing light-emitting polymers: Properties of excited states[J]. CHINESE SCIENCE BULLETIN,2003,48(7):637-642. |
| APA | Lin, HZ,Zheng, M,Yang, JL,&Bai, FL.(2003).Carbazole-containing light-emitting polymers: Properties of excited states.CHINESE SCIENCE BULLETIN,48(7),637-642. |
| MLA | Lin, HZ,et al."Carbazole-containing light-emitting polymers: Properties of excited states".CHINESE SCIENCE BULLETIN 48.7(2003):637-642. |
入库方式： OAI收割
来源：化学研究所
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