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Spectroscopy Letters
An International Journal for Rapid Communication
Volume 32, 1999 - Issue 6
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Original Articles

Spectral Studies on the Interaction of Ru(phen)2(dppx)2+ (phen=1.10-phenanthroline, dppx=7,8-dimethyldipyrido [3,2-a:2′,3′-c] phenazine) and DNA

Lian-Sheng Ling Department of Chemistry, Wuhan University, Wuhan, 430072
,
Zhi-Ke He Department of Chemistry, Wuhan University, Wuhan, 430072
,
Gong-Wu Song Department of Chemistry, Wuhan University, Wuhan, 430072
&
Yun-E Zeng Department of Chemistry, Wuhan University, Wuhan, 430072
Pages 931-939 | Received 25 Jan 1999, Accepted 01 Jun 1999, Published online: 16 Apr 2008
 
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Abstract

The interaction of Ru(phen)2(dppx)2+ (phen=1.10-phenanthroline, dppx=7,8-dimethyl dipyrido[3,2-a:2′,3′-c]phenazine) and the calf thymus DNA were studied with fluorescence and ultraviolet visible absorption spectroscopy. Fe(CN)6 4 and NaCl can not quench the fluorescence of Ru(phen)2(dppx)2+-DNA. which indicate that Ru(phen)2(dppx)2+ intercalate into the double helix of DNA. The ultraviolet visible absorption spectrum of Ru(phen)2(dppx)2+ calf thymus DNA, and the results of their interaction reveal that Ru(phen)2(dppx)2+intercalate into the double helix of DNA via the ligand dppx.

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