标题：Photoinduced electron and energy transfer from coumarin 153 to perylenetetracarboxylic diimide in bmimPF_6/TX-100/water microemulsions
作者：Wu, H.;Wang, H.;Xue, L.;Li, X.
作者机构：[Wu, H] Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, Department of Chemistry, Shandong University, Jinan 250100, China;[ 更多
通讯作者地址：[Li, XY]Shandong Univ, Dept Chem, Minist Educ, Key Lab Colloid & Interface Chem, Jinan 250100, Peoples R China.
来源：Journal of Colloid and Interface Science
关键词：Coumarin 153;Electron transfer;Energy transfer;Perylenetretracarboxylic diimide
摘要：A perylenetetracarboxylic diimide (PDI) compound with an attached hydrophilic polyoxyethylene group at the imide nitrogen position was designed and synthesized. Photoinduced electron and energy transfer between coumarin 153 (C-153) and PDI in a ternary microemulsion with an ionic liquid (bmimPF_6/TX-100/H_2O) were investigated by steady state electronic absorption and fluorescence spectroscopy. The results revealed that both PDI and C-153 resided at the interface between the surfactant TX-100 and the ionic liquid bmimPF_6 in the ternary microemulsions. The absorption spectra suggested no interactions between C-153 and PDI in the ground states, but the fluorescence spectra revealed the presence of an efficient electron transfer and a less efficient energy transfer from C-153 to PDI. Moreover, the electron transfer was much more efficient in microemulsions than that in homogeneous conventional organic solvents due to the unique micro-environment of the microemulsion.