Water-Soluble Fluorescent Silver Nanoclusters
Water-Soluble Fluorescent Silver Nanoclusters
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DOI：
10.1002/adma.200904199
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发表时间：
2010-03-12
影响因子：
29.4
通讯作者：
Suslick, Kenneth S.
中科院分区：
文献类型：
--
作者：
Xu, Hangxun;Suslick, Kenneth S.
银纳米团簇由几个到大约一百个原子组成，其大小与电子的费米波长相当;它们表现出类似分子的性质，包括离散的电子跃迁和强荧光。这些纳米团簇是显着的兴趣，因为它们提供了贵金属中的原子和纳米颗粒行为之间的桥梁。自从首次观察到银纳米团簇的光致发光以来，人们一直在努力制备银纳米团簇并探索其潜在的应用。然而，由于纳米团簇的聚集，特别是在水溶液中，很难合成定义明确的Ag纳米团簇。在这篇研究新闻文章中，我们重点介绍了一些最新进展，基于溶液的水溶性银纳米团簇的合成，使用辐射分解，化学还原和光化学方法制备荧光银纳米团簇。
Ag nanoclusters consist of several to roughly a hundred atom and prosses sizes comparable to the Fermi wavelength of electrons; they exhibit molecule-like properties, including discrete electronic transitions and strong fluorescence. These nanoclusters are of significant interest because they provide the bridge between atomic and nanoparticle behavior in noble metals. Since the first observations of photoluminescence from Ag nanoclusters, substantial effort has been made to prepare Ag nanoclusters and explore their potential applications. The synthesis of well-defined Ag nanoclusters, how-ever, is difficult due to aggregation of nanoclusters, especially in aqueous solutions. In this Research News article, we highlight some recent progress on solution-based synthesis of water-soluble Ag nanoclusters using radiolytic, chemical reduction and photochemical approaches to prepare fluorescent Ag nanoclusters.