Laser photolysis study on crown ether in aqueous solution

Wan, L. K.*; Peng, J.; Lin, M.; Muroya, Yusa*; Katsumura, Yosuke

The transient absorption spectra of crown ethers in aqueous solution are studied using KrF (248 nm) laser photolysis. Moreover, the rate constants for the reaction of SO $_{4}$ $^{-.}$ radicals with crown ethers are determined. By laser photolysis, the rate constants of the reactions of SO $_{4}$ $^{-.}$ radical with 18-crown-6(18C6), 15-crown-5(15C5) and 1,4-dioxane, have been determined to be 2.510 $^{8}$ , 2.210 $^{8}$ and 4.210 $^{7}$ M $^{-1}$ s $^{-1}$ , respectively. The values increase with increasing the size of the ethers and K $^{+}$ and Na $^{+}$ has no obvious effect on the reactivity.

Language	:	English
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Meeting title	:	第47回アイソトープ・放射線研究発表会
Held date	:	2010/07
Location (city)	:	東京
Location (country)	:	日本
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Keywords	:	no keyword
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Cooperating Institute	:	東京大学

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Registration No. : BB20100773
JAEA Abstracts No. :
Paper Submission No. :

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