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Intramolecular donor-acceptor systems: structures of novel linked porphyrin-phenolphthalein molecular systems

DSouza, Francis and Krishnan, V (1990) Intramolecular donor-acceptor systems: structures of novel linked porphyrin-phenolphthalein molecular systems. In: Photochemistry and Photobiology, 51 (3). pp. 285-291.

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Abstract

Intramol. donor-acceptor systems I (M = Zn, Cu; n = 1, 2) bearing porphyrins covalently linked to phenolphthalein at various distances and at different orientations have been synthesized. Optical absorption and emission spectra and magnetic resonance studies reveal interaction between the porphyrin unit and lactone/semiquinone forms of phenolphthalein. The charge-transfer quenching of fluorescence in these systems is found to be more pronounced compared to the intermol. systems. The lifetime studies are interpreted in terms of intramol. electron transfer.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Blackwell Publishing
Keywords: Intramolecular donor;porphyrin-phenolphthalein;molecular systems;lactone;semiquinone
Department/Centre: Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited: 08 Feb 2008
Last Modified: 15 Feb 2010 10:14
URI: http://eprints.iisc.ernet.in/id/eprint/12645

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