UV-induced self-assembly of the inclusion complexes formed between a long-chain photochromic spiropyran and cyclodextrins
文献类型：期刊论文
| 作者 | Sui, Q; Zhou, JW; He, W; Li, ZJ; Wang, YQ |
| 刊名 | SCIENCE IN CHINA SERIES B-CHEMISTRY
 |
| 出版日期 | 1999-04-01 |
| 卷号 | 42期号:2页码:113-120 |
| 关键词 | Uv-induced Self-assembly Photochromism Spiropyran Cyclodextrin Inclusion Complex |
| ISSN号 | 1006-9291 |
| 英文摘要 | Photochromic spiropyran with a long chain alkyl substitute can form axial complexes with alpha-, beta-, and gamma-cyclodextrin, respectively. The complexes show normal photochromism. The novel property of the colored forms of the inclusion complexes is that they can assemble into dimers at relatively low concentration or J-aggregates at relatively high concentration. For alpha-, beta-, and gamma-cyclodextrin, gamma(max) of the J-aggregates appear at 700 650, and 630 nm, respectively. The sizes of the cavities of cyclodextrins have very little effect on the spectra and decoloration kinetics of the dimers, but have great effects on the spectra of the J-aggregates. Unlike the charge transfer complex of Krongauz, the decoloration process of the dimers or J-aggregates cannot be described by an exponential or a two-exponential kinetics, but obey half-order kinetics very well. Another result that can be deduced from the kinetic analysis is that unlike the dimers formed in apolar solvents or in polymers, which consist of a colored molecule (B') and a colorless molecule (A') with a composition of A'B', in the present system, the dimer of the inclusion complex consists of two colored molecules (B). All these results can be interpreted by the proposed structure model and decoloration mechanism. |
| 语种 | 英语 |
| WOS记录号 | WOS:000080130100001 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/75213]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Sui, Q |
| 作者单位 | 1.Chinese Acad Sci, Inst Chem, Beijing 100080, Peoples R China 2.NW Univ Xian, Dept Chem, Xian 710069, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sui, Q,Zhou, JW,He, W,et al. UV-induced self-assembly of the inclusion complexes formed between a long-chain photochromic spiropyran and cyclodextrins[J]. SCIENCE IN CHINA SERIES B-CHEMISTRY,1999,42(2):113-120. |
| APA | Sui, Q,Zhou, JW,He, W,Li, ZJ,&Wang, YQ.(1999).UV-induced self-assembly of the inclusion complexes formed between a long-chain photochromic spiropyran and cyclodextrins.SCIENCE IN CHINA SERIES B-CHEMISTRY,42(2),113-120. |
| MLA | Sui, Q,et al."UV-induced self-assembly of the inclusion complexes formed between a long-chain photochromic spiropyran and cyclodextrins".SCIENCE IN CHINA SERIES B-CHEMISTRY 42.2(1999):113-120. |
入库方式： OAI收割
来源：化学研究所
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