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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
2004-09-01
Source PublicationSPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
ISSN1386-1425
Volume60Issue:11Pages:2635-2641
AbstractThree 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.
KeywordLuminescent Ruthenium(Ii) Complexes Ruthenium(Ii)-dna Interaction Steady-state Luminescence
DOI10.1016/j.saa.2004.01.002
Indexed BySCI
Language英语
WOS IDWOS:000223526200031
PublisherPERGAMON-ELSEVIER SCIENCE LTD
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Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/81808
Collection中国科学院化学研究所
Corresponding AuthorJing, BW
AffiliationChinese Acad Sci, Inst Chem, Ctr Mol Sci, Beijing 100080, Peoples R China
Recommended Citation
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.
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