Luo Geng-Geng, Guo Qi-Lin, Wang Zhi, Sun Cun-Fa, Lin Jin-Qing, Sun Di
Key Laboratory of Environmental Friendly Function Materials Ministry of Education, College of Materials Science and Engineering, Huaqiao University, Xiamen 361021, P. R. China.
Dalton Trans. 2020 May 7;49(17):5406-5415. doi: 10.1039/d0dt00477d. Epub 2020 Apr 3.
Atomically precise silver nanoclusters (NCs) have emerged as a hot topic attracting immense research interest. Protecting ligands are needed for direct capping on cluster surfaces in order to prevent aggregation and to stabilize NCs. It has been demonstrated that protective ligands are critical to determining the sizes, structures and properties of silver NCs. The past decades have witnessed conventionally used organic ligands (thiolates/selenols, phosphines and alkynyls) and inorganic ligands (chalcogens and halogens) being extensively used to passivate NC surfaces. However, only in the most recent years have new-type protecting ligands beyond the conventional ones begun to be introduced in the protecting sphere of new functional silver NCs. The present Frontier article covers the most recent examples of some new protective agents for well-defined silver NCs. We describe four classes of novel silver NCs stabilized by newly-developed surface ligands, namely, nitrogen-donor organic ligands, oxygen-donor inorganic ligands, metalloligands and macrocyclic hosts, paying attention to the synthesis, structures and properties of these silver NCs. This Frontier article will hopefully attract more cluster scientists to explore more freshly ligated atomically precise silver NCs with novel structures and properties in the years ahead. The literature survey in this review is based on publications up to February 2020. Some suggestions for future directions in this field are also given.
原子精确的银纳米团簇（NCs）已成为一个吸引大量研究兴趣的热门话题。为了防止聚集并稳定纳米团簇，需要保护配体直接封端在团簇表面。已经证明，保护配体对于确定银纳米团簇的尺寸、结构和性质至关重要。在过去几十年中，传统使用的有机配体（硫醇盐/硒醇、膦和炔基）和无机配体（硫属元素和卤素）被广泛用于钝化纳米团簇表面。然而，直到最近几年，新型保护配体才开始在新型功能银纳米团簇的保护领域中被引入。本前沿文章涵盖了一些用于明确银纳米团簇的新型保护剂的最新实例。我们描述了四类由新开发的表面配体稳定的新型银纳米团簇，即供氮有机配体、供氧无机配体、金属配体和大环主体，并关注这些银纳米团簇的合成、结构和性质。希望这篇前沿文章能吸引更多的团簇科学家在未来几年探索更多具有新颖结构和性质的新连接的原子精确银纳米团簇。本综述中的文献调查基于截至2020年2月的出版物。还给出了该领域未来方向的一些建议。
