研究目的
To tailor the luminescence property of AIE-featured Au NCs by Ag doping to engineer the size/structure and aggregation states of the Au(I)-thiolate motifs in the NC shell.
研究成果
Ag doping can enhance the luminescence of AIE-featured Au NCs by engineering the size/structure and aggregation states of the Au(I)-thiolate motifs in the NC shell. Prolonging the reaction time can further tailor the luminescence emission from orange to red. This study provides insights into the design of highly luminescent metal NCs.
研究不足
The study is limited to the effects of Ag doping and reaction time on the luminescence properties of Au NCs. The mechanisms behind the luminescence enhancement and red shift are hypothesized but not fully proven.
1：Experimental Design and Method Selection:
The study involves the synthesis of luminescent Au and AuAg NCs by mixing aqueous solutions of GSH and HAuCl4 (and AgNO3 for AuAg NCs) in ultrapure water, followed by heating to 85 °C under gentle stirring for 2-16 hrs.
2：Sample Selection and Data Sources:
The samples are the synthesized Au and AuAg NCs, characterized by UV-vis absorption, luminescence spectra, PAGE analysis, luminescence lifetime measurement, XPS, and ICP-MS.
3：List of Experimental Equipment and Materials:
UV-vis spectrophotometer, luminescence spectrometer, PAGE setup, XPS equipment, ICP-MS.
4：Experimental Procedures and Operational Workflow:
The synthesis involves mixing GSH and HAuCl4 (and AgNO3 for AuAg NCs) in water, heating to 85 °C, and stirring for 2-16 hrs. Characterization involves UV-vis absorption, luminescence spectra, PAGE analysis, luminescence lifetime measurement, XPS, and ICP-MS.
5：Data Analysis Methods:
The data are analyzed to understand the luminescence properties and the effect of Ag doping and reaction time on these properties.
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