Water-Soluble Chiral Ag29 Clusters Protected by Monothiol N-Acetyl-(S)-penicillamine Synthesized in One Pot

被引：2

作者：

Nakanishi, Tatsuya ^{[1
]}

Yao, Hiroshi ^{[1
]}

机构：

[1] Mie Univ, Grad Sch Engn, Div Chem Mat, Tsu, Mie 5148507, Japan

来源：

JOURNAL OF PHYSICAL CHEMISTRY LETTERS | 2023年 / 14卷 / 45期

基金：

日本学术振兴会;

关键词：

SILVER; NANOCLUSTERS; DEGRADATION; ATOMS;

D O I：

10.1021/acs.jpclett.3c02780

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：

Despite significant advances in atomically precise Au clusters with chirality, Ag clusters with the relevant features are still less explored. In this study, we report successful synthesis of chiral Ag-29 clusters protected by water-soluble monothiol in one pot, which is carried out by reducing Ag ions in the presence of N-acetyl-(S)-penicillamine (S-NAP) and triphenylphosphine (TPP) at 10 degrees C, yielding the Ag-29(S-NAP)(24) cluster. The obtained cluster is isolable as a solid-state powder. Optical absorption of Ag-29(S-NAP)(24) is almost identical with that of Ag-29(R-DHLA)(12), where DHLA denotes alpha-dihydrolipoic acid, and magnetic circular dichroism (MCD) results support the similarity of their electronic structures. The anisotropy factor of Ag-29(S-NAP)(24) is comparable to or larger than that of Ag-29(R-DHLA)(12), suggesting that the surface shell structure of Ag-29(S-NAP)(24) is inherently chiral, as has been observed for Ag-29(R-DHLA)(12). Then the use of enantiopure NAP would preferentially lead to a one-handed atomic arrangement in the clusters.

引用

页码：10285 / 10292

页数：8