Synergistic Effects of Pt and Cd Codoping to Icosahedral Au13 Superatoms

被引：40

作者：

Suyama, Megumi ^{[1
]}

Takano, Shinjiro ^{[1
]}

Tsukuda, Tatsuya ^{[1
,2
]}

机构：

[1] Univ Tokyo, Grad Sch Sci, Dept Chem, Tokyo 1130033, Japan

[2] Kyoto Univ, Elements Strategy Initiat Catalysts & Batteries, Kyoto 6158245, Japan

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2020年 / 124卷 / 43期

关键词：

CRYSTAL-STRUCTURE; ELECTRONIC-STRUCTURE; ALLOY NANOCLUSTERS; GOLD CLUSTERS; AU-25; FUNDAMENTALS; CORE;

D O I：

10.1021/acs.jpcc.0c06765

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We synthesized a new trimetallic cluster [PtCdAu23(SC2H4Ph)(18)](-), which has an icosahedral Pt@CdAu11 superatomic core with eight electrons, and investigated how the electronic structure and optical properties of the Au@Au-12 superatomic core of [Au-25(SC2H4Ph)(18)](-) are affected by codoping of group X and XII atoms. Spectroscopic and electrochemical measurements showed that the HOMO-LUMO (HL) gap of Pt@CdAu11 is larger than that of Au@Au-12 and that the photoluminescence quantum yield (PLQY) of Pt@CdAu11 is 46 times larger than that of Au@Au-12. To shed light on the origin of the codoping effects, a comparison was made with monodoped clusters [CdAu24(SC2H4Ph)(18)](0) and [PtAu24(SC2H4Ph)(18)](2-) having the Au@CdAu11 and Pt@Au-12 superatomic cores, respectively. The results revealed that the increment of the HL gap of Pt@CdAu11 is mainly because of Pt doping, while the doping of Pt and Cd synergistically enhances the PLQY of Pt@CdAu11.

引用

页码：23923 / 23929

页数：7

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