【摘 要】
：
A voltammetric study of the interaction of neutral Red(NR) with DNA at a gold electrode in a phosphate buffer solution is described. After adding DNA in an NR s
【机 构】
：
College of Chemistry and Chemical Engineering,College of Chemistry and Molecular Engineering
【基金项目】
：
国家自然科学基金;山东省自然科学基金;the National Key Laboratory Foundation of the Electroanalytical Chemistry of Changchun Institute of Applied Chemistry
论文部分内容阅读
A voltammetric study of the interaction of neutral Red(NR) with DNA at a gold electrode in a phosphate buffer solution is described. After adding DNA in an NR solution, the reduction peak current of NR decreases. The binding mechahisms of NR to DNA in different pH ranges are different. The reduction peak potential of NR in a pH 7.0 phosphate buffer solution in the presence of DNA shifts positively, indicating that the binding of NR to DNA is intercalation action, but at pH=6.0 the reduction peak potential of NR shifts negatively, indicating that the binding of NR to DNA is electrostatic action. The formed complexes are DNA-NR when [NR]/[DNA]0.35, respectively.
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