Spectroscopy Study on Crystal Structure of Ce(NO3)3(phen)2 and Interactions of Ce(NO3)3(phen)2 with DNA
来源期刊：JOURNAL OF RARE EARTHS2005年第3期
论文作者：Hu Ruiding Yu Qingsen Huang Wei Lin Qiuyue
Key words：spectrum methods; cerium complex; crystal structure; calf breast gland DNA; intercalation effect; rare earths;
Abstract: The absorption, fluorescence and Raman spectra of Ce(NO3)3(phen)2 complex were assigned and the crystal structure of the complex was studied. Meanwhile the interactions between Ce(NO3)3(phen)2 and DNA were studied by spectrum methods. As DNA was added, it is found that both the UV absorption bands of Ce(NO3)3(phen)2 and the SERS bands of Ce(NO3)3(phen)2 weaken evidently, while the fluorescence intensity of Ce(NO3)3(phen)2 enhance dramatically. The complex compete against EB on the reaction with DNA. It is indicated by this spectrum methods that there are strong interactions between Ce(NO3)3(phen)2 and DNA, and the bond mode is intercalation. The bond constant of the complex with DNA is determined to be 1.7×105.
Hu Ruiding1，Yu Qingsen1，Huang Wei2，Lin Qiuyue3
(1.Department of Chemistry, Zhejiang University, Hangzhou 310017, China;
2.Institute of Physical Chemistry, Zhejiang Normal University, Jinhua 321004, China;
3.College of Chemistry and Life Science, Zhejiang Normal University, Jinhua 321004, China)
Abstract:The absorption, fluorescence and Raman spectra of Ce(NO3)3(phen)2 complex were assigned and the crystal structure of the complex was studied. Meanwhile the interactions between Ce(NO3)3(phen)2 and DNA were studied by spectrum methods. As DNA was added, it is found that both the UV absorption bands of Ce(NO3)3(phen)2 and the SERS bands of Ce(NO3)3(phen)2 weaken evidently, while the fluorescence intensity of Ce(NO3)3(phen)2 enhance dramatically. The complex compete against EB on the reaction with DNA. It is indicated by this spectrum methods that there are strong interactions between Ce(NO3)3(phen)2 and DNA, and the bond mode is intercalation. The bond constant of the complex with DNA is determined to be 1.7×105.
Key words:spectrum methods; cerium complex; crystal structure; calf breast gland DNA; intercalation effect; rare earths;
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