Volume 63, Issue 32 e202406552
Research Article

Triply Interlocked [2]catenanes: Rational Synthesis, Reversible Conversion Studies and Unprecedented Application in Photothermal Responsive Elastomer

Li-Long Dang

Corresponding Author

Li-Long Dang

College of Chemistry and Chemical Engineering, Luoyang Normal University, Henan Province Function-Oriented Porous Materials Key Laboratory, Luoyang, 471934 P. R. China

These authors contributed equally to this work.

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Jie Zheng

Jie Zheng

College of Chemistry and Chemical Engineering, Luoyang Normal University, Henan Province Function-Oriented Porous Materials Key Laboratory, Luoyang, 471934 P. R. China

College of materials and Chemical Engineering, China Three Gorges University, Yichang, 443002 P. R. China

These authors contributed equally to this work.

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Ju-Zhong Zhang

Ju-Zhong Zhang

School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450001 P. R. China

These authors contributed equally to this work.

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Tian Chen

Tian Chen

College of Chemistry and Chemical Engineering, Luoyang Normal University, Henan Province Function-Oriented Porous Materials Key Laboratory, Luoyang, 471934 P. R. China

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Yin-Hang Chai

Yin-Hang Chai

College of Chemistry and Chemical Engineering, Luoyang Normal University, Henan Province Function-Oriented Porous Materials Key Laboratory, Luoyang, 471934 P. R. China

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Hong-Ru Fu

Hong-Ru Fu

College of Chemistry and Chemical Engineering, Luoyang Normal University, Henan Province Function-Oriented Porous Materials Key Laboratory, Luoyang, 471934 P. R. China

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Francisco Aznarez

Francisco Aznarez

Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Department of Chemistry, Fudan University, Shanghai, 200438 P. R. China

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Shui-Ren Liu

Corresponding Author

Shui-Ren Liu

School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450001 P. R. China

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Prof. Dong-Sheng Li

Prof. Dong-Sheng Li

College of materials and Chemical Engineering, China Three Gorges University, Yichang, 443002 P. R. China

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Prof. Lu-Fang Ma

Corresponding Author

Prof. Lu-Fang Ma

College of Chemistry and Chemical Engineering, Luoyang Normal University, Henan Province Function-Oriented Porous Materials Key Laboratory, Luoyang, 471934 P. R. China

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Dedicated to Professor Guo-Xin Jin on the occasion of his 65th birthday.
First published: 20 May 2024
Citations: 12

Graphical Abstract

Triply interlocked [2]catenane exhibiting outstanding photothermal conversion performance was constructed and used as photothermal units in the creation of light-driven, versatile soft actuators within thermal stimuli-responsive polymers.

Abstract

Triply interlocked [2]catenane complexes featuring two identical, mechanically interlocked units are extraordinarily rare chemical compounds, whose properties and applications remain open to detailed studies. Herein, we introduce the rational design of a new ligand precursor, L1, suitable for the synthesis of six triply interlocked [2]catenanes by coordination-driven self-assembly. The interlocked compounds can be reversibly converted into the corresponding simple triangular prism metallacage by addition of H2O or DMF solvents to their CH3OH solutions, thereby demonstrating the importance of π⋅⋅⋅π stacking and hydrogen bonding interactions in the formation of triply interlocked [2]catenanes. Moreover, extensive studies have been conducted to assess the remarkable photothermal conversion performance. Complex 6 a, exhibiting outstanding photothermal conversion performance (conversion efficiency in solution : 31.82 %), is used to prepare novel photoresponsive elastomer in combination with thermally activated liquid crystal elastomer. The resultant material displays robust response to near-infrared (NIR) laser and the capability of completely reforming the shape and reversible actuation, paving the way for the application of half-sandwich organometallic units in photo-responsive smart materials.

Conflict of interests

The authors declare no competing financial interest.

Data Availability Statement

The data that support the findings of this study are available in the supplementary material of this article.

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