Volume 19, Issue 25 2300938
Research Article

One-Dimensional Chiral Copper Iodide Chain-Like Structure Cu4I4(R/S-3-quinuclidinol)3 with Near-Unity Photoluminescence Quantum Yield and Efficient Circularly Polarized Luminescence

Jian Chen

Corresponding Author

Jian Chen

Department of Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong, 518055 P. R. China

E-mail: [email protected]; [email protected]

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Xin Pan

Xin Pan

Department of Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong, 518055 P. R. China

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Xuanyu Zhang

Xuanyu Zhang

Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, Guangdong, 518055 P. R. China

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Chen Sun

Chen Sun

Department of Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong, 518055 P. R. China

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Congcong Chen

Congcong Chen

Department of Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong, 518055 P. R. China

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Xiaoqin Ji

Xiaoqin Ji

Department of Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong, 518055 P. R. China

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Rui Chen

Rui Chen

Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, Guangdong, 518055 P. R. China

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Lingling Mao

Corresponding Author

Lingling Mao

Department of Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong, 518055 P. R. China

E-mail: [email protected]; [email protected]

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First published: 18 March 2023
Citations: 29

Abstract

Chiral organic−inorganic hybrid metal halide materials have shown great potential for circularly polarized luminescence (CPL) related applications for their tunable structures and efficient emissions. Here, this work combines the highly emissive Cu4I4 cubane cluster with chiral organic ligand R/S-3-quinuclidinol, to construct a new type of 1D Cu-I chains, namely Cu4I4(R/S-3-quinuclidinol)3, crystallizing in noncentrosymmetric monoclinic P21 space group. These enantiomorphic hybrids exhibit long-term stability and show bright yellow emission with a photoluminescence quantum yield (PLQY) close to 100%. Due to the successful chirality transfer from the chiral ligands to the inorganic backbone, the enantiomers show intriguing chiroptical properties, such as circular dichroism (CD) and CPL. The CPL dissymmetry factor (glum) is measured to be ≈4 × 10−3. Time-resolved photoluminescence (PL) measurements show long averaged decay lifetime up to 10 µs. The structural details within the Cu4I4 reveal the chiral nature of these basic building units, which are significantly different than in the achiral case. This discovery provides new structural insights for the design of high performance CPL materials and their applications in light emitting devices.

Conflict of Interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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