Journal of Spectroscopy

Journal of Spectroscopy / 2011 / Article

Open Access

Volume 26 |Article ID 452328 |

Hamid Dezhampanah, Termeh Darvishzad, Mehrnaz Aghazadeh, "Thermodynamic and spectroscopic study on the binding of interaction anionic phthalocyanine with calf thymus DNA", Journal of Spectroscopy, vol. 26, Article ID 452328, 9 pages, 2011.

Thermodynamic and spectroscopic study on the binding of interaction anionic phthalocyanine with calf thymus DNA


The interaction between anionic form of copper (II) N,N',N",N'"-tetrasulfonated phthalocyanine Cu (tspc) and to calf thymus deoxyribonucleic acid (ct-DNA) is investigated by measuring UV-vis absorption and fluorescence spectroscopy in phosphate buffer. The binding constant and stoichiometry were determined by analysis of optical absorption spectra of phthalocyanine at various ct-DNA concentrations using SQUAD software. The static mode of fluorescence quenching of phthalocyanine by calf thymus deoxyribonucleic acid indicates the formation of a ground-state complex. The formation of ground-state complex is a spontaneous molecular interaction procedure in which outside groove binding through the formation of an axial bond between the base pairs of nucleotide and Cu in the central core of phthalocyanine.

Copyright © 2011 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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