Han Fei, Li Jihao, Wang Wenrui, Wang Mouhua, Li Linfan
University of Chinese Academy of Sciences Beijing 100049 China.
Shanghai Institute of Applied Physics, Chinese Academy of Sciences Shanghai 201800 China
RSC Adv. 2022 Nov 21;12(51):33207-33214. doi: 10.1039/d2ra06536c. eCollection 2022 Nov 15.
In our work, a simple and fast synthesis method is provided to synthesize silver nanoclusters (AgNCs). In this method, with using polyacrylic acid (PAA) as a template, the silver ions were reduced to silver nanoclusters by irradiation reduction at room temperature. The prepared silver nanoclusters (PAA-AgNCs) with average particle size of 1.98 ± 0.79 nm have a fluorescence property, and their physical and chemical properties can be controlled by absorbed dose, PAA/Ag mole ratio and other factors. The fluorescence stability of the PAA-AgNCs is good, and it is unique in that the fluorescence emission of the s PAA-AgNCs depends on the excitation wavelength. In addition, based on the fluorescence quenching phenomenon of PAA-AgNCs in the presence of Cr ion, we established a simple and efficient method for the detection of Cr ion by using PAA-AgNCs as fluorescent probes.
在我们的工作中，提供了一种简单快速的合成方法来合成银纳米团簇（AgNCs）。在该方法中，以聚丙烯酸（PAA）为模板，通过室温辐照还原将银离子还原为银纳米团簇。制备的平均粒径为1.98±0.79 nm的银纳米团簇（PAA-AgNCs）具有荧光特性，其物理和化学性质可通过吸收剂量、PAA/Ag摩尔比等因素来控制。PAA-AgNCs的荧光稳定性良好，其独特之处在于s PAA-AgNCs的荧光发射取决于激发波长。此外，基于PAA-AgNCs在Cr离子存在下的荧光猝灭现象，我们建立了一种以PAA-AgNCs作为荧光探针检测Cr离子的简单高效方法。
