Fluorescence and aggregation behavior of a polyimide in solutions
文献类型：期刊论文
| 作者 | Luo HB ; Dong LS ; Tang H ; Teng FG ; Feng ZL |
| 刊名 | macromolecular chemistry and physics
 |
| 出版日期 | 1999 |
| 卷号 | 200期号:3页码:629-634 |
| 关键词 | AROMATIC POLYIMIDES POLY(ETHER IMIDE) MODEL COMPOUNDS SPECTROSCOPY ASSOCIATION SPECTRA STATE |
| ISSN号 | 1022-1352 |
| 通讯作者 | dong ls |
| 中文摘要 | the uv-visible absorption and fluorescence spectra of a soluble polyimide, ys-30, in several organic solvents were measured over a wide range of concentration. the experimental results show that there exist both intramolecular and intermolecular electron donor acceptor interactions for ys-30 molecules. the fluorescence behavior of ys-30 in n,n-dimethylacetamide and in chloroform solutions is similar in general, except that its ground-state intermolecular charge transfer emission is more obvious in n,n-dimethylacetamide solution. this difference is attributed to the greater extent of disruption of the chain packing by solvent or/and the more efficient radiationless energy dissipation process from the excited state complexes to chloroform. the intensity ratio of intermolecular charge transfer emission to intramolecular charge transfer emission is used to characterize the state of aggregation of ys-30 molecules in solutions. the plot of this ratio versus concentration indicates the existence of two critical concentrations. it is also found from the same plot that the decrease of coil size is very pronounced during the initial stage of shrinkage. |
| 收录类别 | CSCD收录国内期刊论文 |
| 语种 | 英语 |
| WOS记录号 | WOS:000078998500017 |
| 公开日期 | 2010-11-04 |
| 源URL | [http://202.98.16.49/handle/322003/22011]  |
| 专题 | 长春应用化学研究所_长春应用化学研究所知识产出_期刊论文 |
| 推荐引用方式 GB/T 7714 | Luo HB,Dong LS,Tang H,et al. Fluorescence and aggregation behavior of a polyimide in solutions[J]. macromolecular chemistry and physics,1999,200(3):629-634. |
| APA | Luo HB,Dong LS,Tang H,Teng FG,&Feng ZL.(1999).Fluorescence and aggregation behavior of a polyimide in solutions.macromolecular chemistry and physics,200(3),629-634. |
| MLA | Luo HB,et al."Fluorescence and aggregation behavior of a polyimide in solutions".macromolecular chemistry and physics 200.3(1999):629-634. |
入库方式： OAI收割
来源：长春应用化学研究所
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