Excited state deprotonation reactions of aromatic amines: a diffusion-controlled process

Chattopadhyay, Nitin ; Samanta, Anunay ; Kundu, Tapanendu ; Chowdhury, Mihir (1989) Excited state deprotonation reactions of aromatic amines: a diffusion-controlled process Journal of Photochemistry and Photobiology A: Chemistry, 48 (1). pp. 61-68. ISSN 1010-6030

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Official URL: http://linkinghub.elsevier.com/retrieve/pii/101060...

Related URL: http://dx.doi.org/10.1016/1010-6030(89)87090-X

Abstract

The excited state proton transfer reactions of carbazole (CAZL), indole (IND) and diphenylamine (DPA) were studied using a picosecond time-resolved technique. The forward rate constant for deprotonation shows a slight temperature dependence. The activation energy for the process was determined by taking various bases in both aqueous and non-aqueous media. It is of the order of the diffusional barrier in the solution phase. Hence it is concluded that the process is diffusion controlled. The values of the diffusion-controlled rate constants are discussed.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
ID Code:8340
Deposited On:26 Oct 2010 11:44
Last Modified:16 May 2016 18:22

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