| 树枝形聚合物修饰的双8-羟基喹啉光物理研究 |
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| 引用本文： | 张鲁,游长江,陈金平,杨国强,李嫕.树枝形聚合物修饰的双8-羟基喹啉光物理研究[J].物理化学学报,2006,22(3):326-329. |
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| 作者姓名： | 张鲁 游长江 陈金平 杨国强 李嫕 |
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| 作者单位： | Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100101, P. R. China; Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, P. R. China; Graduate School of the Chinese Academy of Sciences, Beijing 100049, P. R. China |
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| 摘 要： | 研究了树枝形聚合物修饰的双8-羟基喹啉衍生物(Gn-QMQ, n=1~3)在二氯甲烷和乙腈中的荧光猝灭过程和荧光衰减过程. 随着代数n的增加, 猝灭速率常数减小, 核心双8-羟基喹啉基团荧光寿命增长, 非辐射失活速率常数减小. 研究结果表明, 随着代数的增加, 树枝形骨架对核心基团的位点分离作用增大, 在乙腈中树枝形骨架趋于紧密构象, 具有更强的位点分离作用.
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| 关 键 词： | 芳醚树枝形聚合物 8-羟基喹啉 荧光猝灭 荧光衰减 |
| 收稿时间： | 2005-09-27 |
| 修稿时间： | 2005-11-02 |
Dendritic Bis-(8-hydroxyquinoline) Derivatives: Studies on the Fluorescence Quenching and Decay |
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| ZHANG,Lu,YOU,Chang-Jiang,CHEN,Jin-Ping,YANG,Guo-Qiang,LI,Yi.Dendritic Bis-(8-hydroxyquinoline) Derivatives: Studies on the Fluorescence Quenching and Decay[J].Acta Physico-Chimica Sinica,2006,22(3):326-329. |
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| Authors: | ZHANG Lu YOU Chang-Jiang CHEN Jin-Ping YANG Guo-Qiang LI Yi |
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| Institution: | Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100101, P. R. China; Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, P. R. China; Graduate School of the Chinese Academy of Sciences, Beijing 100049, P. R. China |
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| Abstract: | The fluorescence quenching and the fluorescence decay of a series of dendritic bis-(8-hydroxyquinoline) derivatives (Gn-QMQ, n=1~3) were studied. The quenching rate constant decreased and fluorescence lifetime increased with the generation n increase, which resulted from an increased site-isolating effect of the dendritic structure on the core. Photophysical studies in different solvents indicated that there was an enhanced site-isolating effect in CH3CN. |
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| Keywords: | Poly(aryl ether) dendrimer 8-hydroxyquinoline Fluorescence quenching Fluorescence decay |
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