Laser photolysis study of naphthalene disulphides and naphthalene thiols; reactivities of naphthalenethio radicals

Y. Yoshikawa; Akira Watanabe; O. Ito

doi:10.1016/1010-6030(94)04031-V

Laser photolysis study of naphthalene disulphides and naphthalene thiols; reactivities of naphthalenethio radicals

Y. Yoshikawa, Akira Watanabe, O. Ito

Center for Mineral Processing and Metallurgy (CMPM)

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

Naphthalenethio radicals (Naph-S^.) have been formed by laser photolysis. The transient absorption bands have been assigned by both experiment and molecular orbital (MO) calculation. The reactions of Naph-S^. with vinyl monomers and dienes have been studied by laser photolysis in solution. From the decays of the bands of Naph-S^., the reaction rate constants have been determined. The 2-naphthalenethio radical is more reactive than the 1-naphthalenethio radical; the resonance stability calculated by the MO method supports this finding. Upon introduction of an OH group into the naphthyl group, the reactivity of the thio radical decreases.

Original language	English
Pages (from-to)	209-214
Number of pages	6
Journal	Journal of Photochemistry and Photobiology, A: Chemistry
Volume	89
Issue number	3
DOIs	https://doi.org/10.1016/1010-6030(94)04031-V
Publication status	Published - 1995 Aug 2

Keywords

Kinetics
Nanosecond laser photolysis
Photo-addition reactions
Radicals

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)
Physics and Astronomy(all)

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10.1016/1010-6030(94)04031-V

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abstract = "Naphthalenethio radicals (Naph-S.) have been formed by laser photolysis. The transient absorption bands have been assigned by both experiment and molecular orbital (MO) calculation. The reactions of Naph-S. with vinyl monomers and dienes have been studied by laser photolysis in solution. From the decays of the bands of Naph-S., the reaction rate constants have been determined. The 2-naphthalenethio radical is more reactive than the 1-naphthalenethio radical; the resonance stability calculated by the MO method supports this finding. Upon introduction of an OH group into the naphthyl group, the reactivity of the thio radical decreases.",

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AU - Ito, O.

PY - 1995/8/2

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N2 - Naphthalenethio radicals (Naph-S.) have been formed by laser photolysis. The transient absorption bands have been assigned by both experiment and molecular orbital (MO) calculation. The reactions of Naph-S. with vinyl monomers and dienes have been studied by laser photolysis in solution. From the decays of the bands of Naph-S., the reaction rate constants have been determined. The 2-naphthalenethio radical is more reactive than the 1-naphthalenethio radical; the resonance stability calculated by the MO method supports this finding. Upon introduction of an OH group into the naphthyl group, the reactivity of the thio radical decreases.

AB - Naphthalenethio radicals (Naph-S.) have been formed by laser photolysis. The transient absorption bands have been assigned by both experiment and molecular orbital (MO) calculation. The reactions of Naph-S. with vinyl monomers and dienes have been studied by laser photolysis in solution. From the decays of the bands of Naph-S., the reaction rate constants have been determined. The 2-naphthalenethio radical is more reactive than the 1-naphthalenethio radical; the resonance stability calculated by the MO method supports this finding. Upon introduction of an OH group into the naphthyl group, the reactivity of the thio radical decreases.

KW - Kinetics

KW - Nanosecond laser photolysis

KW - Photo-addition reactions

KW - Radicals

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