Chiral recognition via symmetry-dependent luminescence in zero-dimensional hybrid copper halides

Yi Wei, Yan Zhang, Yawen Li, Chen Li, Yuxuan Wang, Zhishan Luo, Yulian Liu, Huimin Kang, Xihan Chen and Zewei Quan ()
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Yi Wei: Southern University of Science and Technology (SUSTech)
Yan Zhang: Southern University of Science and Technology (SUSTech)
Yawen Li: Liaoning Academy of Materials
Chen Li: Southern University of Science and Technology (SUSTech)
Yuxuan Wang: Southern University of Science and Technology (SUSTech)
Zhishan Luo: Southern University of Science and Technology (SUSTech)
Yulian Liu: Southern University of Science and Technology (SUSTech)
Huimin Kang: Southern University of Science and Technology (SUSTech)
Xihan Chen: Southern University of Science and Technology
Zewei Quan: Southern University of Science and Technology (SUSTech)

Nature Communications, 2025, vol. 16, issue 1, 1-9

Abstract: Abstract Chiral recognition through fluorescence changes enables the rapid and sensitive determination of enantiomers. However, the rational design and synthesis of fluorescent probes for efficient chiral recognition remain a challenge. Here we present a novel platform for chiral recognition based on zero-dimensional hybrid copper halides with unique symmetry-dependent properties. The use of mesomeric 1,2-diaminocyclohexane (DACH) ligands promotes the formation of centrosymmetric, non-luminescent Cu2I64− units. The incorporation of enantiopure S- or R-DACH ligands into these mesomeric compounds breaks their symmetry, spontaneously transforming them into chiral compounds and generating Cu4I62− units that exhibit intense circularly polarized luminescence. Additionally, introducing opposite chiral ligands into these chiral compounds leads to the formation of racemic, non-luminescent CuI32− units, whereas the addition of same-chirality ligands preserves the structure and optical properties of the chiral Cu4I62− units. This enantioselective response by utilizing symmetry-dependent optical properties offers a pathway toward advanced chiral sensing technologies.

Date: 2025
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DOI: 10.1038/s41467-025-63835-y

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