Picosecond pulse radiolysis: Dynamics of solvated electrons in ionic liquid and geminate ion recombination in liquid alkanes

A picosecond pulse radiolysis facility based on a laser-driven photocathode electron accelerator has been constructed. First observation of picosecond dynamics in ionic liquid of DEMMA-TFSI in radiation chemistry was reported. It is found that the electrons produced by ionization are solvated to ful...

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Bibliographic Details
Published in:Radiation physics and chemistry (Oxford, England : 1993) England : 1993), 2008-10, Vol.77 (10), p.1233-1238
Main Authors: Yang, Jinfeng, Kondoh, Takafumi, Norizawa, Kimihiro, Nagaishi, Ryuji, Taguchi, Mitsumasa, Takahashi, Kenji, Katoh, Ryuzi, Anishchik, Sergey V., Yoshida, Yoichi, Tagawa, Seiichi
Format: Article
Language:English
Subjects:
Dry electron
Geminate ion recombination
Ionic liquid
Laser-driven electron accelerator
n-Dodecane
n-Hexane
Picosecond pulse radiolysis
Primary process
Solvated electron
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Summary:A picosecond pulse radiolysis facility based on a laser-driven photocathode electron accelerator has been constructed. First observation of picosecond dynamics in ionic liquid of DEMMA-TFSI in radiation chemistry was reported. It is found that the electrons produced by ionization are solvated to full solvation in ionic liquid with a rate constant of 3.9×10 10 s −1, and dry electrons before full solvation react rapidly with biphenyl and pyrene with a rate constant of 3.8–7.9×10 11 dm 3 mol −1 s −1. The geminate ion recombination in n-dodecane and n-hexane was also observed by monitoring transient optical absorption at 523 nm.
ISSN:0969-806X
1879-0895
DOI:10.1016/j.radphyschem.2008.05.031