连接链长对双核钌分子内与分子间协同ECL影响研究

Research on effect of different carbon chain linkage on concerted intra-&intermolecular ECL of bimetallic ruthenium complexes

为深入研究连接碳链长度n对双核三联吡啶钌标记物Ru(bpy)23+(CH2)nRu(bpy)23+(n=3,5,8)自身分子内,以及不同外加碱存在下的分子内与分子间协同ECL性能,考察了在DBAE(二丁基乙醇胺)、TPA(三丙胺)等共反应碱存在下,Pt、Au、GC等不同工作电极上,连接碳链长度n对双核标记物自身分子内,以及外加碱存在下的分子内与分子间协同ECL性能的影响规律.结果表明,ECL强度随着连接碳链长度的增加逐渐增大,并且工作电极种类将直接影响ECL结果,这为今后该类双核标记物的结构设计以及双核标记物分子内与分子间协同ECL性能的提升奠定了基础.

To investigate the effect of carbon chain linkage on both intramolecular and intra＆ intermolecular electrochemiluminescence （ ECL ） of bimetallic ruthenium complexes Ru（bpy）3^2＋ （CH2）.Ru（bpy）3^2＋ （n=3,5,8）, ECL measurement has been performed with and without the presence of amine co-reactants, such as dibutylaminoethanol （DBAE） and tripropylamine （TPA）, on different working electrodes, such as Pt, glassy carbon （GC） and Au. The experimental results demonstrate that the longer the carbon chain linkage, the stronger the ECL intensity, and quite different ECL performance can be observed on different working electrodes. All these results can lay a solid foundation for structure designing of bimetallic ECL labels, and improvement of the ECL efficiency through combining both intra-＆ intermolecular interaction.