摘要
着重讨论了用ＳＥＲＳ研究Ｒｕ（ｂｐｙ）２ｄｐｐｚ配合物及其与ＤＮＡ作用的机理。当这种钌配合物与ＤＮＡ发生作用时，只是它的ｄｐｐｚ配体插入了ＤＮＡ双链的碱基对中，与碱基对形成了共轭体系，影响了Ｒｕ 配合物的ＭＬＣＴ跃迁，产生了荧光，同时也在拉曼谱图和电子吸收谱图上有所表现。
SERS is better method at analysing the samples which are prone to emit fluorescence or photodecomposition than other methods.Raman scattering of a novel complexes of Ruthenium(Ⅱ):Ru(bpy) 2dppz and it′s effects on DNA were studied with surface enhanced Raman spectra(SERS).We find that when this complex binds to DNA,only the ligand dppz intercalate into the double helix of DNA,and form a larger conjugate system,affect the metal to ligand charge transfer(MLCT),produce strong photoluminescence.All these cause shifting of some Raman peaks of the complex and changex of the relative intensity of some other peaks.And on the charge absorbed spectra,after the addition of DNA,the compex'absorbed peaks of Ru(bpy) 2dppz solvent shift to long wavelength,this is also one of the character of the intercalation.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
1999年第5期670-673,共4页
Spectroscopy and Spectral Analysis
关键词
SERS
相互作用
钌
联吡啶
配全物
DNA
Dipyridophenazine complex of ruthenium(Ⅱ), Ru(bpy) 2dppz surface enhanced raman spectra(SERS), DNA, UV
