Aggregation behavior of amphiphilic D-π-A molecules bearing recognition group |
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引用本文: | 杨文胜,姜月顺,柴向东,李铁津,符连社,张洪杰.Aggregation behavior of amphiphilic D-π-A molecules bearing recognition group[J].中国科学B辑(英文版),2000(5). |
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作者姓名: | 杨文胜 姜月顺 柴向东 李铁津 符连社 张洪杰 |
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摘 要: | Aggregation behavior of two amphiphilic D-π-A molecules bearing barbituric acid as both recogniton group and electron-drawing substituent , 5-(4-dodecyl oxybenzylidene)-(1H, 3H)-2,4,6-pyrimidine trione (PB12) and 5-(4-N,N-didodecyl aminobenzylidene)-(1H,3H)-2,4,6-pyrimidine trione (AB12) was studied by UV-visible, fluorescence, and surface voltaic spectroscopies (SPS). The experimental results indicate that PB12 tends to form J-aggregate and AB12 tends to form H-aggregate under increasing concentration. An intramolecular twisted charge transfer (TICT) emission around 500 nm is observed when J-aggregate is formed between PB12 molecules, and an excimer emission around 600 nm is observed when H-aggregate is formed between AB12 molecules.
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关 键 词: | D-π-A molecules molecular recognition J-aggregate H-aggregate fluorescence. |
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