【摘 要】
：
Four coumarin derivatives(4a-4d) with different alkoxy chains were synthesized.It was found that compound 4d showed a better gelation ability than the other com
【机 构】
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College of Chemistry
【基金项目】
：
国家自然科学基金;教育部新世纪优秀人才支持计划
论文部分内容阅读
Four coumarin derivatives(4a-4d) with different alkoxy chains were synthesized.It was found that compound 4d showed a better gelation ability than the other compounds,for example,it could self-assemble into organogeis in various organic fluids via ultrasound treatment or heating-cooling process,whereas compound 4c could only gel in a few mixed solvents and compounds 4a,4b could not form organogel.The results from fluorescent and F%IR spectra indicate that π-π interaction had an effect on the formation of the organogels of compound 4d besides H-bonding and van der Waals interaction,which were the driving forces for the self-assembling of compound 4c in gel state.The gel of compound 4d in toluene could emit strong fluorescence under UV irradiation and the [2+2]cyclo-addition was suggested by 1H NMR and fluorescence spectroscopy.This light-sensitive organogel might find application in optical materials.
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