| THE INTERACTION OF ETHYL BENZOATE AND TRIFLUOROACETIC ACID IN EXCITED STATE |
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| 作者姓名： | 白凤莲 樊琳 虞群 叶建平 |
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| 作者单位： | Institute of Chemistry，Academia Sinica，Beijing 100080，PRC，Institute of Chemistry，Academia Sinica，Beijing 100080，PRC，Institute of Photographic Chemistry，Academia Sinica，Beijing 100101，PRC，Institute of Photographic Chemistry，Academia Sinica，Beijing 100101，PRC |
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| 基金项目： | Project supported by the National Natural Science Foundation of China and the National Laboratory for Structural Chemistry. |
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| 摘 要： | This paper is concerned with the interaction of ethyl benzoate (EBA) and trifluoroaceticacid (TFA) molecules in the excited state by measurements of steady--state and transient fluo-rescence spectra at room and low temperatures. The results show that not only the 1:1 exci-plex but also the 2:1 triplex between EBA and TFA was formed. The formation pathway ofthe triplex is that the exciplex formed at first, then by the interaction with the EBA mole-cule it transformed into triplex. But it could not be formed by the dimer of EBA by interac-tion with TFA. The dimer of EBA is confirmed in the concentrated solution. So there arefour components in EBA/TFA--concentrated solution and their fluorescence lifetimes aremeasured respectively.
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THE INTERACTION OF ETHYL BENZOATE AND TRIFLUOROACETIC ACID IN EXCITED STATE |
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| BAI FENG-LIAN,FAN LIN,YU QUN,YE JIAN-PING Institute of Chemistry,Academia Sinica,Beijing ,PRC Institute of Photographic Chemistry,Academia Sinica,Beijing ,PRC.THE INTERACTION OF ETHYL BENZOATE AND TRIFLUOROACETIC ACID IN EXCITED STATE[J].Science in China(Chemistry),1992(8). |
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| Authors: | BAI FENG-LIAN FAN LIN YU QUN YE JIAN-PING Institute of Chemistry Academia Sinica Beijing PRC Institute of Photographic Chemistry Academia Sinica Beijing PRC |
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| Institution: | BAI FENG-LIAN,FAN LIN,YU QUN,YE JIAN-PING Institute of Chemistry,Academia Sinica,Beijing 100080,PRC Institute of Photographic Chemistry,Academia Sinica,Beijing 100101,PRC |
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| Abstract: | This paper is concerned with the interaction of ethyl benzoate (EBA) and trifluoroacetic
acid (TFA) molecules in the excited state by measurements of steady--state and transient fluo-
rescence spectra at room and low temperatures. The results show that not only the 1:1 exci-
plex but also the 2:1 triplex between EBA and TFA was formed. The formation pathway of
the triplex is that the exciplex formed at first, then by the interaction with the EBA mole-
cule it transformed into triplex. But it could not be formed by the dimer of EBA by interac-
tion with TFA. The dimer of EBA is confirmed in the concentrated solution. So there are
four components in EBA/TFA--concentrated solution and their fluorescence lifetimes are
measured respectively. |
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| Keywords: | ethyl benzoate trifluoroacetic acid exciplex triplex dimer |
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