| 光谱学与光谱分析 |
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| Laser Photolysis Study on Photochemical Reactions in Mixed Solutions of [bmim][PF6] and Acetonitrile |
| XU Jing-jing, WU Guo-zhong, LONG De-wu, YAO Si-de |
| Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China |
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Abstract Laser flash photolysis study was carried out for the first time in the binary mixture of room-temperature ionic liquid (RTIL) and traditional organic solvent. Photochemical properties of the ionic liquid 1-butyl-3-methylimidazolium hexafluorophosphate [bmim][PF6] and its binary mixed solutions with MeCN were investigated by laser photolysis technique at an excitation wavelength of 355 nm, using anthraquinone (AQ) as a probe molecule. It was indicated that [bmim][PF6] itself participates in the reaction with 3AQ*. Moreover, along with the change in the ratio of RTIL to organic solvent, the decay reaction rate constant of 3AQ*changes regularly and a critical point was observed at xRTIL=0.06. Before the critical point, the decay rate constant increases rapidly with increasing xRTIL; however, it decreases obviously with increasing xRTIL after the critical point. The kinetic data are given, and the possible reaction mechanisms in mixed solutions are also speculated.
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Received: 2006-05-10
Accepted: 2006-08-20
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Corresponding Authors:
XU Jing-jing
E-mail: xujing0539@163.com
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| Cite this article: |
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XU Jing-jing,WU Guo-zhong,LONG De-wu, et al. Laser Photolysis Study on Photochemical Reactions in Mixed Solutions of [bmim][PF6] and Acetonitrile[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2007, 27(10): 1936-1938.
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| URL: |
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https://www.gpxygpfx.com/EN/Y2007/V27/I10/1936 |
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