| 微环境对长链香豆素酯光化学和光物理过程的影响 |
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| 引用本文： | 杜大明,王永梅,孟继本. 微环境对长链香豆素酯光化学和光物理过程的影响[J]. 高等学校化学学报, 1998, 19(10): 1611-1613 |
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| 作者姓名： | 杜大明 王永梅 孟继本 |
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| 作者单位： | 1. 山东大学化学学院, 济南, 250100;2. 南开大学化学系, 天津, 300071 |
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| 摘 要： | 疏水作用在胶束、膜的形成以及生命过程中起着重要的作用．疏水作用可促使长链分子相互簇集，造成局部浓度效应和分子的有序排列［１～３］，疏水作用对光化学和光物理过程的影响是一种微环境效应．本文合成了十六酸和十八酸－４－甲基－７－羟基香豆素酯，研究了它们在有...
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| 关 键 词： | 光化学 香豆素 激基缔合物 |
| 收稿时间： | 1997-09-13 |
Microenvironmental Effects on the Photochemical and Photophysical Processes of Long Chain Coumarin Esters |
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| DU Da-Ming,WANG Yong-Mei,MENG Ji-Ben. Microenvironmental Effects on the Photochemical and Photophysical Processes of Long Chain Coumarin Esters[J]. Chemical Research In Chinese Universities, 1998, 19(10): 1611-1613 |
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| Authors: | DU Da-Ming WANG Yong-Mei MENG Ji-Ben |
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| Affiliation: | 1. College of Chemistry, Shandong University, Jinan, 250100;2. Department of Chemistry, Nankai Univrsity, Tianjin, 300071 |
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| Abstract: | The photochemical reactions and photophysics of long chain coumarin esters have been investigated. In dioxane water(DX H2O) solvent mixture, long chain 4-methyl-7-hydroxycoumarin hexadecanate and octadecanate form aggregates forced by the hydrophobic effect. The photochemical reactions of this two long chain coumarin esters gave exclusively anti-HTdimer in 75% and 90% yields respectively in dioxane-water(volume ratio 1:2) solvent mixture. The excimer formation and the acceleration of photochemical reaction were ascribed to the hydrophobic effect and the changes of microenvironment. |
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| Keywords: | Photochemistry Coumarin Excimer |
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