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Citation: WANG Mei, HOU Lin-Rong, GAO Zuo-Ning, YANG Tian-Lin. Electrochemical and UV-Vis Spectral Studies on Interaction Between Cobalt(Ⅱ) Complex with N,N'-Bis(2-hydroxy-1-naphthaldehyde)-2,6-pyridyenediimine and DNA[J]. Chinese Journal of Applied Chemistry, ;2008, 25(10): 1186-1192. shu

Electrochemical and UV-Vis Spectral Studies on Interaction Between Cobalt(Ⅱ) Complex with N,N'-Bis(2-hydroxy-1-naphthaldehyde)-2,6-pyridyenediimine and DNA

1.
Key Lab of Energy Sources and Chemical Engineering, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan 750021

Corresponding author: GAO Zuo-Ning,
Received Date: 23 September 2007
Available Online: 28 December 2007
Fund Project: 宁夏高等学校科学研究基金(200623)资助项目 (200623)

The interaction between N,N'-bis(2-hydroxy-1-naphthaldehyde)-2,6-pyridyenediimine and DNA was studied by cyclic voltammetry(CV) and UV-Vis spectrometry(UV).The oxidation peak potential(E_p) and the wavelength of absorption shifted positively,meanwhile the peak current(I_p) and the absorbance value declined,indicating strong intercalation between the complex and DNA.The complex ratio and stability constant of the complex combined with DNA were 0.966 and 3.05×10⁴ L/mol by electrochemical method,respectively,which agreed with the values from UV-Vis spectra.Oxidation peak current of the complex decreased with the addition of DNA and the decreasing in peak current was proportional to the DNA concentration in the range of 2.0×10^-5 mol/L to 1.0×10^-3 mol/L.The linear regression equation was ΔI_p(μA)=5.516 1×10³c_DNA(mol/L)+0.253 1 with a correlation coefficient was 0.996 0.This method can be used for DNA determination.
- N,N'-bis(hydroxy-naphthaldehyde)-pyridyenediimine,
- DNA,
- electrochemistry,
- UV-Vis spectrum
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