This paper describes how macroscopic stirring of a reaction mixture can be used to produce nanostructures exhibiting properties not readily achievable via other protocols. In particular, it is shown that by simply adjusting the stirring rate, a standard glutathione‐based method—to date, used to produce only marginally stable fluorescent silver nanoclusters, Ag NCs—can be boosted to yield nanoclusters retaining fluorescence for unprecedented periods of over 2 years. This enhancement derives not simply from increased homogenization of the reaction mixture but mainly from an appropriately timed delivery of oxygen from above the reaction mixture. In effect, oxygen serves as a reagent that dictates size, structure, stability, and functional properties of the growing nanoobjects.

中文翻译：

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超稳定荧光银纳米团簇的搅拌控制合成


本文描述了如何使用反应混合物的宏观搅拌来生产具有其他方案不易实现的特性的纳米结构。特别是，研究表明，通过简单地调整搅拌速率，一种基于谷胱甘肽的标准方法（迄今为止仅用于生产稍微稳定的荧光银纳米团簇，Ag NC）可以被增强，以产生在前所未有的超过时间段内保留荧光的纳米团簇。 2年。这种增强不仅源于反应混合物均质化的增加，而且主要源于从反应混合物上方适当定时的氧气输送。实际上，氧气充当决定生长纳米物体的尺寸、结构、稳定性和功能特性的试剂。