2024-08-08 韓国基礎科学研究院(IBS)
＜関連情報＞
- https://www.ibs.re.kr/cop/bbs/BBSMSTR_000000000738/selectBoardArticle.do
- https://onlinelibrary.wiley.com/doi/10.1002/smll.202400306
超安定蛍光性銀ナノクラスターの攪拌制御合成に成功 Stirring-Controlled Synthesis of Ultrastable, Fluorescent Silver Nanoclusters
Olgierd Cybulski, Cristóbal Quintana, Marta Siek, Bartosz A. Grzybowski
Small Published: 27 June 2024
DOI:https://doi.org/10.1002/smll.202400306
Abstract
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.
