Volume 62, Issue 36 e202307875
Research Article

Multiple Stimuli-Responsive Luminescent Chiral Hybrid Antimony Chlorides for Anti-Counterfeiting and Encryption Applications

Dan-Yang Liu

Dan-Yang Liu

Henan Key Laboratory of Crystalline Molecular Functional Materials, Henan International Joint Laboratory of Tumor Theranostical Cluster Materials, Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou, 450001 China

These authors contributed equally to this work.

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Hai-Yang Li

Hai-Yang Li

Henan Key Laboratory of Crystalline Molecular Functional Materials, Henan International Joint Laboratory of Tumor Theranostical Cluster Materials, Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou, 450001 China

These authors contributed equally to this work.

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Run-Ping Han

Run-Ping Han

Henan Key Laboratory of Crystalline Molecular Functional Materials, Henan International Joint Laboratory of Tumor Theranostical Cluster Materials, Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou, 450001 China

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Hua-Li Liu

Corresponding Author

Hua-Li Liu

Henan Key Laboratory of Crystalline Molecular Functional Materials, Henan International Joint Laboratory of Tumor Theranostical Cluster Materials, Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou, 450001 China

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Prof. Shuang-Quan Zang

Corresponding Author

Prof. Shuang-Quan Zang

Henan Key Laboratory of Crystalline Molecular Functional Materials, Henan International Joint Laboratory of Tumor Theranostical Cluster Materials, Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou, 450001 China

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First published: 17 July 2023
Citations: 29

Graphical Abstract

The chiral hybrid antimony halides R-/S-(C5H12NO)2SbCl5 have excitation-dependent emission originating from the synergistic effects of ligand and self-trapped excitons, and exhibit reversible structural transformation between non-emissive R-/S-(C5H12NO)2SbCl5 ⋅ DMF upon exposure to DMF and heat. CPL switch, chiral optical logic gate and anti-counterfeiting applications have been investigated based on the multiple stimuli-responsive properties.

Abstract

Stimuli-responsive circularly polarized luminescence (CPL) materials are ideal for information anti-countering applications, but the best-performing materials have not yet been identified. This work presents enantiomorphic hybrid antimony halides R-(C5H12NO)2SbCl5 (1) and S-(C5H12NO)2SbCl5 (2) showing mirror-imaged CPL activity with a dissymmetry factor of 1.2×10−3. Interestingly, the DMF-induced structural transformation is realized to obtain non-emissive R-(C5H12NO)2SbCl5 ⋅ DMF (3) and S-(C5H12NO)2SbCl5 ⋅ DMF (4) upon exposure to DMF vapor. The transformation process is reversed upon heating. DFT calculations showed that the DMF-induced-quenched-luminescence is attributed to the intersection of the ground and excited state curves on the configuration coordinates. Unexpectedly, the nanocrystals of the chiral antimony halides 1 and 2 were prepared and indicate the excellent solution process performance. The reversible PL and CPL switching gives the system applications in information technology, anti-counterfeiting, encryption-decryption, and logic gates.

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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