Synthesis, characterization and DNA binding studies of a zinc complex with 2,6-bis(benzimidazol-2-yl) pyridine.

Abstract:

:A zinc(II) complex having planar tridentate ligand, bzimpy, where bzimpy is 2,6-bis(benzimidazol-2-yl) pyridine was synthesized and characterized by UV, NMR, infrared spectroscopy and fluorescence spectra. The zinc complex acts as dibasic acids, in which N-H protons on benzimidazole moieties are responsible for a deprotonation site. Both the absorption spectra and reduction potentials are strongly dependent on the solution pH, which leads to the basis of a proton-induced molecular switch. The binding of this complex with calf thymus DNA has been investigated by absorption, luminescence titrations and viscosity measurements. The results suggest that the zinc(II) complex intercalates into DNA base pairs via the ligand bzimp.

journal_name

J Inorg Biochem

authors

Wang J,Shuai L,Xiao X,Zeng Y,Li Z,Matsumura-Inoue T

doi

10.1016/j.jinorgbio.2004.12.018

subject

Has Abstract

pub_date

2005-03-01 00:00:00

pages

883-5

issue

3

eissn

0162-0134

issn

1873-3344

pii

S0162-0134(04)00421-0

journal_volume

99

pub_type

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