Ansari, Anees A. and Sharma, R. K. (2009) Synthesis and Characterization of a Biologically Active Lanthanum(III)–Catechin Complex and DNA Binding Spectroscopic Studies. Spectroscopy Letters , 42 (4). pp. 178-185. ISSN 1532-2289

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Abstract

A lanthanum(III) complex of catechin has been synthesized and characterized by elemental analysis, molar conductance, UV-Vis spectra, infrared spectra, thermal analysis, and 1H NMR. The complex behaves as a nonelectrolyte in methanol solvent. The spectral and thermal properties of the complex are examined. A thermogravimetric (TGA) study showed the hydrated nature of the complex. 1H NMR spectra of the lanthanum and the catechin (CT) ligands measured in CD3OD-d4 also show metal ligand coordination. The lanthanum–catechin complex shows bright luminescence in methanol solution. The interaction of the complex with calf thymus DNA has been investigated by absorption and emission spectroscopic measurements. Experimental spectral results suggest CT–DNA binding with catechin complex via an intercalative mode.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/s Taylor & Francis.
Subjects:	Spectroscopy
Divisions:	UNSPECIFIED
Depositing User:	Ms Neetu Chandra
Date Deposited:	16 Oct 2012 12:14
Last Modified:	16 Oct 2012 12:14
URI:	http://npl.csircentral.net/id/eprint/703

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