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Synthesis and Self-assembling of Coumarin-based Low-molecular Weight Organogelators 被引量:1
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作者 CHEN Guo-jun XUE Peng-chong LU Ran SONG Dong-po BAO Chun-yan XU Ting-hua ZHAO Ying-ying 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 2009年第2期178-182,共5页
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 organ... 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 organogels 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 FT-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. 展开更多
关键词 COUMARIN ORGANOGELATOR SELF-ASSEMBLING [2+2] cyclo-addition
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