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.
徐静静,吴国忠,龙德武,姚思德. 离子液体[bmim][PF6]与乙腈混合体系中的激光光解研究[J]. 光谱学与光谱分析, 2007, 27(10): 1936-1938.
XU Jing-jing, WU Guo-zhong, LONG De-wu, YAO Si-de. Laser Photolysis Study on Photochemical Reactions in Mixed Solutions of [bmim][PF6] and Acetonitrile. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2007, 27(10): 1936-1938.
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