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Characterization of the transient species generated in the photoexcitation of benzoic acid, 2-hydroxy-, 2-d-ribofuranosylhydrazide

Paper ID Volume ID Publish Year Pages File Format Full-Text
27815 44044 2009 6 PDF Available
Title
Characterization of the transient species generated in the photoexcitation of benzoic acid, 2-hydroxy-, 2-d-ribofuranosylhydrazide
Abstract

Using time-resolved technique of laser flash photolysis (LFP), it has been demonstrated that benzoic acid, 2-hydroxy-, 2-d-ribofuranosylhydrazide (BHR) in aqueous solution can be ionized via a mono-photonic process under 266 nm laser, giving a hydrated electron, anion radical that formed by hydrated electron reacts with steady state of BHR, and neutral radical that formed from rapid deprotonation of the radical cation of BHR. The quantum yield of photo-ionization is determined to be 0.024 at room temperature. Furthermore studies on the reaction of BHR with the primary irradiated products of water such as eaq− and OH, and with N3 have been determined. On the basis of comparison of the results from LFP with that obtained from time-resolved pulse radiolysis, the reaction mechanism has unambiguously identified.

Keywords
2-Hydroxy-, 2-d-ribofuranosylhydrazide (BHR); Laser flash photolysis; Mono-photonic ionization; Pulse radiolysis; Radical
First Page Preview
Characterization of the transient species generated in the photoexcitation of benzoic acid, 2-hydroxy-, 2-d-ribofuranosylhydrazide
Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 208, Issues 2–3, 15 December 2009, Pages 104–109
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering