期刊
CHEMISTRYSELECT
卷 7, 期 17, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/slct.202103347
关键词
Core-approaching; Electrostatic attraction; Gold nanocluster; Polyamine; Rapid synthesis
资金
- National Natural Science Foundation of China [22074005, 21974008]
- Beijing Natural Science Foundation [2202038]
- Open Research Fund Program of Beijing Key Lab of Plant Resource Research and Development, Beijing Technology and Business University [PRRD2021-YB6]
A simple electrostatic attraction-assisted core approaching strategy was developed to accelerate the synthesis of Au NCs and Cu NCs by introducing polyamine(hyperbranched polyetheneimine, hPEI), achieving rapid preparation.
Thiolate-stabilized gold nanoclusters (Au NCs) are widely used in bioimaging, chemical sensing, and emitting devices because of their good solubility, great stability and versatile optical/chemical properties. However, most conventional synthetic strategies reported so far suffer long reaction time, which limits the rapid and large-scale synthesis of Au NCs. In this study, a simple electrostatic attraction-assisted core approaching strategy was developed, which accelerates the synthesis of Au NCs by introducing polyamine (hyperbranched polyetheneimine, hPEI). As a case study, the tactic was demonstrated for the rapid preparation of Au NCs based on glutathione (GSH)-HAuCl4 system within 1.5 h. The synthesis includes two steps: first, negatively charged Au(I)-GSH complex under basic condition (pH 9) was adsorbed onto hPEI surface via electrostatic attraction; second, aurophilic attraction of Au(I) centers benefited the formation of Au NCs. With such a strategy, copper nanoclusters (Cu NCs) can also be quickly prepared within 30 min.
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