对布斯特-希夫林金属纳米粒子合成的新见解。
New insights into Brust-Schiffrin metal nanoparticle synthesis.
机构信息
Department of Chemistry and Centre for Self-Assembled Chemical Structures (CSACS), McGill University, 801 Sherbrooke Street West, Montreal, Quebec, Canada, H3A 2K6.
出版信息
J Am Chem Soc. 2010 Jul 21;132(28):9582-4. doi: 10.1021/ja104011b.
A revised view of Brust-Schiffrin metal nanoparticle syntheses is presented here. Precursor species of these reactions are identified and quantified for Au, Ag, and Cu systems. Contrary to the assumptions of previous reports, tetraalkylammonium metal complexes are shown to be precursors of the two-phase reactions, whereas M(I) thiolates are shown to be precursors of the one-phase reactions. A new scheme is outlined for the two-phase synthesis, and the implications of this scheme are discussed. A new synthetic strategy employing well-defined precursors is also introduced. Finally, M(I) thiolate formation, and its impact on nanoparticle synthesis, is discussed. It is expected that the results presented here will lead to modifications in the manner in which these important syntheses are conducted.
这里提出了对 Brust-Schiffrin 金属纳米粒子合成的修正观点。对 Au、Ag 和 Cu 体系的这些反应的前体物种进行了识别和定量。与之前报道的假设相反，证明四烷基铵金属配合物是两相反应的前体，而 M(I) 硫醇盐是单相反应的前体。概述了两相合成的新方案，并讨论了该方案的意义。还介绍了一种采用明确定义的前体的新合成策略。最后，讨论了 M(I) 硫醇盐的形成及其对纳米粒子合成的影响。预计这里提出的结果将导致这些重要合成的进行方式发生改变。
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