Solvent-mediated chirality inversion in orthogonal hierarchical assembly of achiral carbene-anchored gold cluster

Ying-Jie Liu, Wen-Qiu Yu, Yu Liu, Xiao-Wen Qi and Shuang-Quan Zang ()
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Ying-Jie Liu: Zhengzhou University, Henan Key Laboratory of Crystalline Molecular Functional Materials, College of Chemistry
Wen-Qiu Yu: Zhengzhou University, Henan Key Laboratory of Crystalline Molecular Functional Materials, College of Chemistry
Yu Liu: Zhengzhou University, Henan Key Laboratory of Crystalline Molecular Functional Materials, College of Chemistry
Xiao-Wen Qi: Zhengzhou University, Henan Key Laboratory of Crystalline Molecular Functional Materials, College of Chemistry
Shuang-Quan Zang: Zhengzhou University, Henan Key Laboratory of Crystalline Molecular Functional Materials, College of Chemistry

Nature Communications, 2025, vol. 16, issue 1, 1-11

Abstract: Abstract Precisely constructing homochiral helical nanostructures from achiral molecules by non-covalent interactions remains challenging owing to the untraceable handedness control at different hierarchical levels. Here, we present an aurophilicity-assisted orthogonal assembly strategy, enabling not only the homochiral assembly of an achiral carbene-anchored trinuclear gold cluster with chiral amines but also the inversion of circularly polarized luminescence (CPL). This gold cluster could spontaneously form random right- or left-handed helices, while introduction of chiral amines effectively drives the formation of hierarchically homochiral twists with |glum| of 10−2, directed by inherent aurophilicity of gold cluster and orthogonal intermolecular C-H⋅⋅⋅O/N interactions. Furthermore, by fine-tuning the assembly conditions from DMF to DMF/H2O solvent, the morphology of assemblies can be specifically controlled, resulting in inversion of CPL signals. This study highlights the potential of aurophilicity-driven orthogonal assembly strategy in effectively controlling hierarchical chirality and paves the way for advancing chiral metallo-superstructures.

Date: 2025
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DOI: 10.1038/s41467-025-65637-8

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