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Covalently linked bisporphyrins bearing tetraphenylporphyrin and perbromoporphyrin units: Synthesis and their properties

Bhyrappa, P and Krishnan, V (2004) Covalently linked bisporphyrins bearing tetraphenylporphyrin and perbromoporphyrin units: Synthesis and their properties. In: Journal of Chemical Sciences, 116 (2). pp. 71-78.

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Abstract

A series of covalently linked bisporphyrins bearing meso-tetraphenylporphyrin (TPP) and octabromotetraphenylporphyrin (OBTPP) units have been synthesised and characterised. Electrochemical studies on these bisporphyrins showed an anodic shift (similar to 30-60 mV) of the TPP unit and a cathodic shift (similar to 40-80 mV) of OBTPP in redox potentials. Further, steady-state fluorescence studies on bisporphyrins indicated dramatic decrease in fluorescence quantum yields of the TPP moiety. Electrochemical redox and fluorescence data seem to suggest the possible existence of intramolecular interactions in these bisporphyrins.

Item Type: Journal Article
Additional Information: copyright of this article belongs to Indian Academy of Sciences.
Keywords: Bisporphyrins;brominated porphyrins;electrochemical redox; fluorescence studies.
Department/Centre: Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited: 18 Dec 2008 10:25
Last Modified: 19 Sep 2010 04:53
URI: http://eprints.iisc.ernet.in/id/eprint/16800

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