Laser photolysis of ionic liquid [bmim][PF6]

Photoinduced chemical reactions of 1-butyl-3-methylimidazolium hexafluorophosphate （[bmim][PF6]） were studied by laser photolysis at a wavelength of 266 nm. Excited triplet state ^3[bmim]^＋＊ was observed, radical cation [bmim] ^2＋＊. and neutral [bmim]^＊ radical via photoionization were also formed....

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Bibliographic Details
Published in:Nuclear science and techniques 2007-02, Vol.18 (1), p.16-19
Main Authors: ZHU, Guanglai, WU, Guozhong, LONG, Dewu, SHA, Maolin, YAO, Side
Format: Article
Language:English
Subjects:
[bmim][PF 6]
[bmim][PF6]
Laser flash photolysis
O433.4
O644.1
Photoionization
Triplet state
光解作用
离子液体
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Summary:Photoinduced chemical reactions of 1-butyl-3-methylimidazolium hexafluorophosphate （[bmim][PF6]） were studied by laser photolysis at a wavelength of 266 nm. Excited triplet state ^3[bmim]^＋＊ was observed, radical cation [bmim] ^2＋＊. and neutral [bmim]^＊ radical via photoionization were also formed. Energy transfer from ^3[bmim]^＋＊ to β-carotene was confirmed. Oxidation via one electron transfer from TMPD to 3[bmim]＋＊ was also observed and the rate constant was determined to be 1.2 × 10^5 L·mol^-1·s^-1. The reaction of [bmim][PF6] with hydrated electron （eaq^-） was confirmed by laser photolysis in aqueous solution.
ISSN:1001-8042
2210-3147
DOI:10.1016/S1001-8042(07)60011-6