Volume 60, Issue 52 pp. 27144-27150
Research Article

Guest-Driven Light-Induced Spin Change in an Azobenzene Loaded Metal–Organic Framework

Kai-Ping Xie

Kai-Ping Xie

Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275 P. R. China

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Ze-Yu Ruan

Ze-Yu Ruan

Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275 P. R. China

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Bang-Heng Lyu

Bang-Heng Lyu

Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275 P. R. China

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Xiao-Xian Chen

Xiao-Xian Chen

Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275 P. R. China

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Xue-Wen Zhang

Xue-Wen Zhang

Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275 P. R. China

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Guo-Zhang Huang

Guo-Zhang Huang

Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275 P. R. China

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Dr. Yan-Cong Chen

Dr. Yan-Cong Chen

Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275 P. R. China

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Prof. Zhao-Ping Ni

Corresponding Author

Prof. Zhao-Ping Ni

Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275 P. R. China

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Prof. Ming-Liang Tong

Corresponding Author

Prof. Ming-Liang Tong

Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275 P. R. China

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First published: 21 October 2021
Citations: 60

Graphical Abstract

Guest-driven light-induced spin change (GD-LISC) was firstly realized in a Hofmann-type metal–organic framework with photochromic azobenzene guests.

Abstract

Stimuli-responsive materials that can be reversibly switched by light are of immense interest. Among them, photo-responsive spin crossover (SCO) complexes have great promises to combine the photoactive inputs with multifaceted outputs into switchable materials and devices. However, the reversible control the spin-state change by photochromic guests is still challenging. Herein, we report an unprecedented guest-driven light-induced spin change (GD-LISC) in a Hofmann-type metal–organic framework (MOF), [Fe(bpn){Ag(CN)2}2]⋅azobenzene. (1, bpn=1,4-bis(4-pyridyl)naphthalene). The reversible trans–cis photoisomerization of azobenzene guest upon UV/Vis irradiation in the solid-state results in the remarkable magnetic changes in a wide temperature range of 10–180 K. This finding not only establishes a new switching mechanism for SCO complexes, but also paves the way toward the development of new generation of photo-responsive magnetic materials.

Conflict of interest

The authors declare no conflict of interest.

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