Luminescent pH sensing and DNA binding properties of a novel ruthenium(II) complex.

Abstract:

:A new Ru(II) complex, [Ru(bpy)(2)(dhipH3)](ClO4)(2) (in which bpy=2,2'-bipyridine, dhipH(3)=3,4-dihydroxy-imidado[4,5-f][1,10]-phenanthroline), was synthesized and characterized, and the pH effect on the emission spectra of the complex was studied. The interaction of the complex with calf thymus DNA was investigated by UV-visible and emission spectroscopy, and viscosity measurements. The results suggest that the complex acted as a sensitive luminescent pH sensor and a strong ct-DNA intercalator with an intrinsic binding constant of (4.0+/-0.7) x 10(5) M(-1) in buffered 50 mM NaCl.

journal_name

J Inorg Biochem

authors

Bai GY,Wang KZ,Duan ZM,Gao LH

doi

10.1016/j.jinorgbio.2004.02.021

subject

Has Abstract

pub_date

2004-06-01 00:00:00

pages

1017-22

issue

6

eissn

0162-0134

issn

1873-3344

pii

S0162013404000571

journal_volume

98

pub_type

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