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Construction and Systematical Symmetric Studies of a Series of Supramolecular Clusters with Binary or Ternary Ammonium Triphenylacetates
Published on: February 15, 2016
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Ultrastable Enantiomeric Tetrapod Cu30 Clusters With Near-Infrared Circularly Polarized TADF.
Fei-Fan Wang1, Li-Xin Zhang1, Ya-Qing Zhang1
1Henan Key Laboratory of Crystalline Molecular Functional Materials, College of Chemistry, Key Laboratory of Special Functional Molecular Materials (Zhengzhou University), Ministry of Education, Zhengzhou University, Zhengzhou, 450001, China.
Angewandte Chemie (International Ed. in English)
|February 17, 2026
Summary
Researchers developed ultrastable chiral copper clusters (Cu30) that emit near-infrared circularly polarized light (NIR CPL). These stable clusters enable efficient NIR CPL applications, including novel light-emitting diodes.
Area of Science:
- Materials Science
- Inorganic Chemistry
- Photophysics
Background:
- Developing stable copper(I) clusters with near-infrared circularly polarized luminescence (NIR CPL) is challenging.
- Existing copper clusters often lack the stability and efficiency required for advanced applications.
Purpose of the Study:
- To synthesize ultrastable chiral copper(I) clusters exhibiting NIR CPL.
- To investigate the potential of these clusters in optoelectronic devices.
Main Methods:
- A dual-ligand strategy was employed to synthesize chiral R/S-Cu30 clusters.
- The self-assembly of five octahedral Cu6 units formed the tetrapod metal skeleton.
- Characterization involved luminescence spectroscopy and device fabrication.
Main Results:
- The largest nuclearity Cu(I) cluster reported to date exhibiting NIR CPL was synthesized (R/S-Cu30).
- R/S-Cu30 demonstrated high quantum yields (40%) and thermally activated delayed fluorescence (TADF), achieving NIR circularly polarized TADF.
- Fabricated NIR-CP light-emitting diodes showed promising performance (gEL of ±1.8-2.1 × 10-3, EQE of 8% at 732 nm).
Conclusions:
- This study presents a novel enantiomeric pair of tetrapod-like Cu30(I) clusters.
- The findings overcome challenges in stability, efficient NIR emission, and chiral luminescence for copper cluster design.
- The developed clusters show potential for solution-processable NIR-CP optoelectronic devices.
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