Photoionization of crystal violet in aqueous solution

Bhasikuttan, A. C. ; Sapre, A. V. ; Rama Rao, K. V. S. ; Mittal, J. P. (1995) Photoionization of crystal violet in aqueous solution Photochemistry and Photobiology, 62 (2). pp. 245-250. ISSN 0031-8655

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Laser flash photolysis studies were carried out on a triphenylmethane dye, crystal violet (CV+), at 248 nm in aqueous solutions. The results show that CV+ undergoes photoionization and the resulting transients CV-2+, hydrated electrons (e-aq) and CV+ radical formed by the reaction of e-aq with CV+ have been characterized. Studies using suitable scavengers were done to support the characterization of the transient species. Laser intensity effects show that the ionization is biphotonic. Two mechanisms are proposed to explain the observed photoionization involving higher excited singlet state and/ or another long-lived excited state of the dye.

Item Type:Article
Source:Copyright of this article belongs to American Society for Photobiology.
ID Code:25697
Deposited On:04 Dec 2010 11:53
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