An In-Situ Variable-Temperature Surface-Enhanced Raman Spectroscopic Study of the Plasmon-Mediated Selective Oxidation of p-Aminothiophenol

被引：0

作者：

Cao, Wumei ^{[1
]}

Lu, Yang ^{[1
]}

Huang, Yi-Fan ^{[1
]}

机构：

[1] ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China

来源：

CHINESE JOURNAL OF STRUCTURAL CHEMISTRY | 2022年 / 41卷 / 10期

基金：

中国国家自然科学基金;

关键词：

surface-enhanced Raman spectroscopy; p-aminothiophenol; temperature; plasmon-mediated chemical reaction; COUPLING REACTIONS; NANOPARTICLES; MOLECULE; SILVER; GOLD; AG; P; P'-DIMERCAPTOAZOBENZENE; NANOSCALE; CATALYSIS; SERS;

D O I：

10.14102/j.cnki.0254-5861.2022-0134

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The roles of temperature change in surface-enhanced Raman scattering (SERS) hotspots are important for understanding the plasmon-mediated selective oxidation of p-aminothio-phenol in a SERS measurement. Here, we demonstrate that the temperature change in hotspots seriously influences the conversion of p-aminothiophenol on Au by employing variable-temperature SERS measurements. The conversion steadily and irreversibly increased when the temperature increased from 100 to 360 K. But the conversion decreased above 360 K, because this conversion was exothermic. This temperature-dependence conversion suggests that the temperature change in hotspots originated from the photothermal effect should be coupled to the hot-electron effect in promoting the selective oxidation of p-aminothiophenol.

引用

页码：2210077 / 2210081

页数：5

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