Formation of gold nanoparticles using amine reducing agents
Formation of gold nanoparticles using amine reducing agents
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DOI：
10.1021/la060045z
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发表时间：
2006-06-20
期刊：
影响因子：
3.9
通讯作者：
Blanchard, G. J.
中科院分区：
文献类型：
--
作者：
Newman, J. D. S.;Blanchard, G. J.
我们报告使用胺作为还原剂在金纳米粒子的形成。我们可以预测是否胺将作为还原剂在这个反应中的基础上，它们的氧化还原性能。AuNP形成的动力学可以用Marcus电子转移理论来理解，其中由于Au还原电位和胺氧化电位之间的差异，在反转区域中进行较慢的反应。对于一定数量的胺还原剂，在HAuCl 4还原之后，胺自由基阳离子与溶液中的其它还原剂分子的后续反应可以形成聚（胺）。这些发现共同指出了胺在AuNP形成中作为还原剂的效用，并提供了关于这些反应将进行的条件的信息。
We report on the use of amines as reducing agents in the formation of gold nanoparticles. We can predict whether the amines will function as reducing agents in this reaction based on their redox properties. The kinetics of AuNP formation can be understood in terms of Marcus electron transfer theory, where the slower reactions proceed in the inverted region owing to the difference between the Au reduction potential and the amine oxidation potential. For a certain number of the amine reducing agents, following reduction of HAuCl4, a subsequent reaction of the amine radical cation with other reducing agent molecules in solution can form poly(amine)s. These findings point collectively to the utility of amines as reducing agents in AuNP formation and provide information on the conditions under which these reactions will proceed.