Heterochiral Self‐Discrimination Driven Dimerization of Polynuclear Gold(I)‐Sulfido Complexes with Enhanced Phosphorescence
Decanuclear chiral gold(I) sulfido clusters (S<sup>SDP</sup>-Au<sub>10</sub> and R<sup>SDP</sup>-Au<sub>10</sub>) have been assembled by taking advantage of the judiciously selected SDP ligands (SDP = 7,7'-bis(diphenylphosphino)-1,1'-spirobiindane). Interestingly, an achiral heterodimer icosanuclear meso-cluster (meso<sup>SDP</sup>-Au<sub>20</sub>) has been obtained by simply mixing S<sup>SDP</sup>-Au<sub>10</sub> and R<sup>SDP</sup>-Au<sub>10</sub> in a 1:1 ratio. These gold(I) complexes have been found to display intense near-infrared (NIR) luminescence with an emission maximum at around 750 nm in the solid state. The photoluminescence quantum yield (PLQY) of meso<sup>SDP</sup>-Au<sub>20</sub> in drop-cast solid-state thin film has been found to show a significant enhancement from 8 % in the S<sup>SDP</sup>-Au<sub>10</sub> and R<sup>SDP</sup>-Au<sub>10</sub> to 25 %. In addition, the dimerization process with heterochiral self-discrimination has been found to be sensitive to the solvent polarity and configuration of the diphosphine ligand. This work has provided a platform for the investigation and mechanistic understanding of heterochiral self-sorting and assembly processes.
Authors
- Vivian Wing‐Wah Yam (ORCID: https://orcid.org/0000-0001-8349-4429)
- Ziyong Chen (ORCID: https://orcid.org/0000-0002-7407-0840)
- Liang‐Liang Yan
Institutions
- Chinese University of Hong Kong (HK)
- Institute of Molecular Functional Materials (CN)
- State Key Laboratory of Synthetic Chemistry (CN)
- University of Hong Kong (HK)
Publication Details
- Journal
- Angewandte Chemie International Edition
- Published
- 2024-12-07
- DOI
- https://doi.org/10.1002/anie.202419062
- Citations
- 3
- Primary Topic
- Nanocluster Synthesis and Applications
- Type
- article
- Field-Weighted Citation Impact
- 0.35
Funders
- National Natural Science Foundation of China
- Innovation and Technology Commission