Cocrystallization of Two Negatively Charged Dimercaptomaleonitrile-Stabilized Silver Nanoclusters

Yao Li; Xi-Ming Luo; Peng Luo; Qiu-Xu Zang; Zhao-Yang Wang; Shuang-Quan Zang

doi:10.1021/acsnano.2c12473

Cocrystallization of Two Negatively Charged Dimercaptomaleonitrile-Stabilized Silver Nanoclusters

ACS Nano. 2023 Mar 28;17(6):5834-5841. doi: 10.1021/acsnano.2c12473. Epub 2023 Mar 13.

Authors

Yao Li¹, Xi-Ming Luo¹, Peng Luo^{1

2}, Qiu-Xu Zang¹, Zhao-Yang Wang¹, Shuang-Quan Zang¹

Affiliations

¹ Henan Key Laboratory of Crystalline Molecular Functional Materials, Henan International Joint Laboratory of Tumor Theranostical Cluster Materials, Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou 450001, People's Republic of China.
² College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 454003, People's Republic of China.

PMID: 36912873
DOI: 10.1021/acsnano.2c12473

Abstract

Studies on the assembly of atomically precise metal nanoclusters (NCs) are of great significance in the nanomaterial field, which has attracted increasing interest in the last few decades. Herein, we report the cocrystallization of two negatively charged atom-precise silver nanoclusters, the octahedral [Ag₆₂(MNT)₂₄(TPP)₆]^8- (Ag₆₂) and the truncated-tetrahedral [Ag₂₂(MNT)₁₂(TPP)₄]^4- (Ag₂₂) in a 1:2 ratio (MNT^2- = dimercaptomaleonitrile, TPP = triphenylphosphine). As far as we know, a cocrystal containing two negatively charged NCs has seldom been reported. Single-crystal structure determinations reveal that the component Ag₂₂ and Ag₆₂ NCs both adopt core-shell structures. In addition, the component NCs were separately obtained by adjusting the synthetic conditions. This work enriches the structural diversity of silver NCs and extends the family of cluster-based cocrystals.

Keywords: assembly; cocrystal; dimercaptomaleonitrile; optical absorption; silver nanoclusters.