Self-Assembly of Amphiphilic Copper Nanoclusters Driven by Cationic Surfactants.
胶束
肺表面活性物质
水溶液
材料科学
作者
Jin Yuan,Zhuoran Liu,Minghui Dong,Ling Wang,Shuli Dong,Jingcheng Hao
出处
期刊:Langmuir [American Chemical Society] 日期:2021-04-22卷期号:37 (22): 6613-6622被引量:4
标识
DOI:10.1021/acs.langmuir.1c00022
摘要
Amphiphilicity is an excellent physicochemical property, which is yet to be explored from traditional surfactants to nanoparticles. This article shows that the amphiphilicity of copper nanoclusters (CuNCs) can be readily tuned by electrostatic interactions with cationic surfactants and cetyltrimethylammonium cations (CTA+) with counterions Br-, Cl-, and C7H8O3S-. Due to the role of surface ligands, the complexes of glutathione-capped CuNCs (GSH-CuNCs) and the surfactants exhibit good amphiphilicity, which enables them to self-assemble like a molecular amphiphile. This could significantly increase the utility of metal nanoclusters in basic and applied research. As the concentration of the surfactant changes, the aggregates change from nanoparticles to network-like structures. After the formation of supramolecular self-assemblies by hydrophobic interactions, the enhancement of fluorescence intensity was observed, which can be ascribed to the suppression of intramolecular vibrations based on aggregation-induced emission (AIE) and combined with the compactness of GSH-CuNCs in self-assemblies. Our study provides a facile way to generate solid fluorescent materials with excellent fluorescence performance, which may find applications in light-emitting diodes (LEDs).