NDLI: Synthesis, Characterization Luminiscence Studies and Microbial Activity of Ethylenediamine Ruthenium (II) Complexes with Dipyridophenazine Ligands

Content Provider	Springer Nature Link
Author	Shilpa, Mynam Nagababu, Penumaka Kumar, Y. Praveen Latha, J. Naveena Lavanya Reddy, M. Rajender Karthikeyan, K. S. Gabra, Nazar Satyanarayana, Sirasani
Copyright Year	2010
Abstract	Three symmetric ligands 7-methyl dipyrido-[3,2-a;2′,3′-c]phenazine (dppz-CH$_{3}$), 7-nitro dipyrido-[3,2-a;2′,3′-c]phenazine (dppz-NO$_{2}$) and benzo[i]dipyrido-[3,2-a;2′,3′-c]phenazine (dppn) and their ruthenium(II) complexes [Ru(en)$_{2}$(L)][ClO$_{4}$]$_{2}$ (en= ethylenediamine), L= dppz-CH$_{3}$, dppz-NO$_{2}$ and dppn have been synthesized and characterized by IR, $^{1}$H, $^{13}$C NMR and Mass spectra. The interactions of these complexes with calf thymus DNA have been investigated by spectrophotometric, spectrofluorimetric, circular dichroism, viscosity and thermal denaturation studies. As the planar extension of the intercalative ligand increases, the interaction of the complex with DNA increases, indicating that the size and shape of the intercalalative ligand has a marked effect on the strength of interaction. The plot of log K versus log [Na$^{+}$] yield a slope of -1.26, -1.53, -1.60 for the complexes 1, 2 and 3 respectively. These three complexes have been found to promote the cleavage of plasmid pBR 322 DNA upon irradiation.
Starting Page	1155
Ending Page	1164
Page Count	10
File Format	PDF
ISSN	10530509
Journal	Journal of Fluorescence
Volume Number	21
Issue Number	3
e-ISSN	15734994
Language	English
Publisher	Springer US
Publisher Date	2010-12-22
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Symmetric ligands Transition metal Fluorescence studies Salt dependence studies Toxicity studies Biophysics and Biological Physics Biomedicine general Biochemistry Biotechnology Analytical Chemistry
Content Type	Text
Resource Type	Article
Subject	Sociology and Political Science Spectroscopy Law Biochemistry Clinical Biochemistry Clinical Psychology

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