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La-phen-邻苯二甲酸混配化合物与DNA作用的共振光散射光谱及分析应用 被引量:4

Long Range Assembly of Mixed-Complexes on the Molecular Surfaces of Nucleic Acid
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摘要 本文研究了镧的混配物LaL1L2·3H2O(L1为邻苯二甲酸,L2为邻菲咯啉)与DNA作用的共振光散射光谱。加入DNA后,在pH6.5~7.5的范围内,LaL1L2·3H2O在DNA分子表面发生长距离自组装,在470nm处产生了增强的共振光散射峰,其发光强度与DNA的浓度成线性关系。该方法的线性范围为23~1870ng·mL-1,检出限(3σ)为23ng·mL-1,可用于测定纳克级的DNA。 In this paper, resonance lightscattering characteristics of interaction between mixedcomplexes of LaL1L2Cl3·3H2O (L1∶C8H6O4;L2∶phen) with ctDNA were studied. When DNA was added, long range assembly of LaL1L2Cl3 on the molecular surfaces of nucleic acid occurred in the pH 6.5~7.5, resulting in an enhancement of resonance lightscattering (RLS) peak at 470 nm. The intensity of resonance lightscattering was found to be proportional to the concentration of DNA.
出处 《分析科学学报》 CAS CSCD 北大核心 2003年第4期317-320,共4页 Journal of Analytical Science
关键词 La-phen-邻苯二甲酸混配化合物 DNA 结构 共振光散射 光谱分析 长距自组装 镧系元素 Mixedcomplexes Resonance lightscattering DNA
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