期刊
JOURNAL OF PHYSICAL CHEMISTRY C
卷 121, 期 27, 页码 14929-14935出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpcc.7b04201
关键词
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资金
- [NSF-CHE-1255519]
Au-38(SCH2CH2Ph)(24) nanomolecules upon etching with tert-butylthiol undergo core-size conversion to green-gold Au-30(S-tBu)(18) via Au-36(SCH2CH2Ph)(24-x)(S-tBu)(x) intermediate. The structural transformation from Au38 to Au30 indicates a strong steric effect due to the tert-butyl group of the exchanging ligand in contrast to electronic effect by ligands such as thiophenol, which transforms the Au-38(SCH2CH2Ph)(24) to Au-36(S-tBu)(24). In this work, fast reaction kinetics were observed and thermodynamically stable Au-30(S-tBu)(18) was obtained in molecular purity.
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