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Steady-state and time-resolved spectroscopic investigations on the existence of stable methanol/AOT/n-heptane reverse micelles
Wang, Jia-Pei1,2; Chen, Jun-Sheng1,2; Zhao, Guang-Jiu1
关键词Reverse Micelles Hydrogen Bonding Fluorescence Lifetime Surfactant Aot Photophysics Coumarin
刊名JOURNAL OF COLLOID AND INTERFACE SCIENCE
2014-06-01
DOI10.1016/j.jcis.2013.12.050
423页:1-6
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Chemistry, Physical
研究领域[WOS]Chemistry
关键词[WOS]INTRAMOLECULAR CHARGE-TRANSFER ; NONAQUEOUS POLAR-SOLVENTS ; SOLVATION DYNAMICS ; BINARY-MIXTURES ; AEROSOL-OT ; WATER ; SURFACTANT ; NANOPARTICLES ; FLUORESCENCE ; PHOTOPHYSICS
英文摘要In this work, we have reported our study on the controversial issue whether methanol molecules can be effectively encapsulated by surfactant AOT to form true reverse micelles. We compared the different photophysical properties of coumarin 153 (C153) in methanol/AOT/n-heptane reverse micelles and methanol/n-heptane binary mixture by means of steady-state absorption, fluorescence and time-resolved fluorescence spectroscopies. In the reverse micelles, the fluorescence emission spectra of C153 were dependent on the excitation wavelength, while in binary mixtures, the excitation wavelength dependence was not observed. The biexponential decay curves of C153 in reverse micelles give a further confirmation for the two different environments where C153 molecules reside in. In other words, C153 molecules can exist both inside the core of the reverse micelles and outside of it. These results proved that the methanol can be effectively encapsulated by AOT in n-heptane solvents to form stable methanol/AOT/n-heptane reverse micelles. (C) 2014 Elsevier Inc. All rights reserved.
语种英语
WOS记录号WOS:000334977200001
引用统计
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/145811
专题中国科学院大连化学物理研究所
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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Wang, Jia-Pei,Chen, Jun-Sheng,Zhao, Guang-Jiu. Steady-state and time-resolved spectroscopic investigations on the existence of stable methanol/AOT/n-heptane reverse micelles[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2014,423:1-6.
APA Wang, Jia-Pei,Chen, Jun-Sheng,&Zhao, Guang-Jiu.(2014).Steady-state and time-resolved spectroscopic investigations on the existence of stable methanol/AOT/n-heptane reverse micelles.JOURNAL OF COLLOID AND INTERFACE SCIENCE,423,1-6.
MLA Wang, Jia-Pei,et al."Steady-state and time-resolved spectroscopic investigations on the existence of stable methanol/AOT/n-heptane reverse micelles".JOURNAL OF COLLOID AND INTERFACE SCIENCE 423(2014):1-6.
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