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...
The photochemical reactions and photophysics of long chain coumarin esters have been investigated. In dioxane water(DX H 2O) 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 HT dimer 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.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
1998年第10期1611-1613,共3页
Chemical Journal of Chinese Universities
基金
国家自然科学基金