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Transient absorption studies on 3,6-dibromo polyvinylcarbazole and its model compounds

Anandhi, R and Rajesh, CS and Das, Suresh and Umapathy, S (1997) Transient absorption studies on 3,6-dibromo polyvinylcarbazole and its model compounds. In: Journal of Photochemistry and Photobiology A: Chemistry, 106 (1-3). pp. 135-139.

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Official URL: http://dx.doi.org/10.1016/S1010-6030(97)00050-6


3,6-Dibromo-N-ethylcarbazole (DBNEC) and its polymeric analogue poly-3,6-dibromovinylcarbazole (PDBVCz) were studied by transient absorption spectroscopy. The transient absorption spectrum of the 3,6-dibromo-N-ethylcarbazole radical cation and decay rate constants of radical cations of 3,6-dibromo-N-ethylcarbazole and its polymeric analogue are presented. In the case of unsubstituted carbazole, the ratio of the yield of radical cation of monomer to polymer is 2.0, whereas in the case of PDBVCz, under the same experimental conditions, the yield of the radical cation is an order of magnitude less in comparison with the monomer model compound DBNEC. This drastic difference in yield has been correlated to the difference in the conformational structure of the polymer as evidenced by nuclear magnetic resonance spectroscopy. (C) 1997 Elsevier Science S.A.

Item Type: Journal Article
Publication: Journal of Photochemistry and Photobiology A: Chemistry
Publisher: Elsevier Science
Additional Information: Copyright of this article belongs to Elsevier Science.
Keywords: Transient absorption;Polyvinylcarbazole
Department/Centre: Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited: 22 Jun 2011 05:56
Last Modified: 22 Jun 2011 05:56
URI: http://eprints.iisc.ac.in/id/eprint/38553

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