[ruthenium(II)(bpy)(2)L](2+), where L are imidazo[f]-1,10-phenanthrolines: synthesis, photophysics and binding with DNA

doi:10.1016/j.saa.2004.01.002

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	[ruthenium(II)(bpy)(2)L](2+), where L are imidazo[f]-1,10-phenanthrolines: synthesis, photophysics and binding with DNA
	Jing, BW; Zhang, MH; Shen, T
刊名	SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
	2004-09-01
卷号	60 期号:11 页码:2635-2641
关键词	Luminescent Ruthenium(Ii) Complexes Ruthenium(Ii)-dna Interaction Steady-state Luminescence
ISSN号	1386-1425
DOI	10.1016/j.saa.2004.01.002
英文摘要	Three Ru(II) complexes of type as [Ru(II)(bpy)(2)L](2+) were synthesized, where L are 1,10-phenanthroline derivatives of imidazole (1), having at position 2 alpha-naphthyl (2), 3-methoxy-4-hydroxy-phenyl (3). All complexes show intense MLCT transition both in acetonitrile and in water and also exhibit strong emission at room temperature, which is efficiently quenched by oxygen as well as, to some extent, by water. The binding of complexes 1-3 to calf thymus DNA was investigated by using electronic absorption, steady-state luminescence, luminescence quenching, excited-state lifetime and circular dichroism spectra. Hypochromic effect, luminescence enhancement, and quenching studies demonstrate the existence of intercalation mode. Circular dichroism spectra indicate the stereoselectivity of the binding. The binding of 1-3 with DNA is sensitive to the nature of ligands, such as planarity, pi-electron extension and hydrophobicity. Complex 3 exhibits the strongest binding with DNA, which can be attributed to hydrogen bonding. (C) 2,004 Elsevier B.V. All rights reserved.
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000223526200031
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/81807]
专题	中国科学院化学研究所
通讯作者	Jing, BW
作者单位	Chinese Acad Sci, Inst Chem, Ctr Mol Sci, Beijing 100080, Peoples R China
推荐引用方式 GB/T 7714	Jing, BW,Zhang, MH,Shen, T. [ruthenium(II)(bpy)(2)L](2+), where L are imidazo[f]-1,10-phenanthrolines: synthesis, photophysics and binding with DNA[J]. SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY,2004,60(11):2635-2641.
APA	Jing, BW,Zhang, MH,&Shen, T.(2004).[ruthenium(II)(bpy)(2)L](2+), where L are imidazo[f]-1,10-phenanthrolines: synthesis, photophysics and binding with DNA.SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY,60(11),2635-2641.
MLA	Jing, BW,et al."[ruthenium(II)(bpy)(2)L](2+), where L are imidazo[f]-1,10-phenanthrolines: synthesis, photophysics and binding with DNA".SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 60.11(2004):2635-2641.