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Electrochemistry of Atomically Precise Metal Nanoclusters
Accounts of Chemical Research ( IF 18.3 ) Pub Date : 2018-11-30 00:00:00 , DOI: 10.1021/acs.accounts.8b00379
Kyuju Kwak 1 , Dongil Lee 1
Affiliation  

Thiolate-protected metal nanoparticles containing a few to few hundred metal atoms are interesting materials exhibiting unique physicochemical properties. They encompass the bulk-to-molecule transition region, where discrete electronic states emerge and electronic band energetics yield to quantum confinement effects. Recent progresses in the synthesis and characterization of ultrasmall gold nanoparticles have opened up new avenues for the isolation of extremely monodispersed nanoparticles with atomically precision. These nanoparticles are also called nanoclusters to distinguish them from other regular metal nanoparticles with core diameter >2 nm. These nanoclusters are typically identified by their actual molecular formulas; prominent among these are Au25(SR)18, Au38(SR)24, and Au102(SR)44, where SR is organothiolate. A number of single crystal structures of these nanoclusters have been disclosed. Researchers have effectively utilized density functional theory (DFT) calculations to predict their atomic and electronic structures, as well as their physicochemical properties. The atomically precise metal nanoclusters have been the focus of recent studies owing to their novel size-specific electrochemical, optical, and catalytic properties.

中文翻译:

原子精确金属纳米簇的电化学

包含几到几百个金属原子的硫醇盐保护的金属纳米颗粒是有趣的材料,具有独特的物理化学性质。它们涵盖了从本体到分子的过渡区域,在该区域中出现了离散的电子态,并且电子带高能屈服于量子约束效应。超小金纳米粒子的合成和表征方面的最新进展为原子极高的分离度极度分散的纳米粒子开辟了新途径。这些纳米粒子也被称为纳米团簇,以将它们与核心直径> 2 nm的其他常规金属纳米粒子区分开。这些纳米团簇通常通过其实际分子式来识别。其中最突出的是Au 25(SR)18,Au 38(SR)24和Au 102(SR)44,其中SR是有机硫醇盐。已经公开了这些纳米团簇的许多单晶结构。研究人员已有效利用密度泛函理论(DFT)计算来预测其原子和电子结构以及其理化性质。原子精确的金属纳米簇由于其新颖的特定尺寸的电化学,光学和催化特性而成为最近研究的焦点。
更新日期:2018-11-30
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