Citation: Yao Li, Mohammad Khurram Javed, Shu-Qi Wu, Arshia Sulaiman, Ying-Ying Wu, Zhao-Yang Li, Osamu Sato, Xian-He Bu. Aggregation-induced emission meets magnetic bistability: Synergy between spin crossover and fluorescence in iron(Ⅱ) complexes[J]. Chinese Chemical Letters, ;2023, 34(4): 107492. doi: 10.1016/j.cclet.2022.05.006 shu

Aggregation-induced emission meets magnetic bistability: Synergy between spin crossover and fluorescence in iron(Ⅱ) complexes

Yao Li ^{a, 1} ,
Mohammad Khurram Javed ^{a, 1} ,
Shu-Qi Wu ^b ,
Arshia Sulaiman ^a ,
Ying-Ying Wu ^a ,
Zhao-Yang Li ^{a, *,} ,
Osamu Sato ^b ,
Xian-He Bu ^a

a.
School of Materials Science and Engineering, Nankai University, Tianjin 300350, China
b.
Institute for Materials Chemistry and Engineering, Kyushu University, Fukuoka 819-0395, Japan

zhaoyang@nankai.edu.cn

Received Date: 26 March 2022
Revised Date: 13 April 2022
Accepted Date: 6 May 2022
Available Online: 10 May 2022

Figures(5)

Luminescent spin crossover (SCO) materials have attracted significant interest owing to their potential applications in magneto-optical switches. However, the majority of previously reported Fe^Ⅱ-based SCO complexes are adversely affected by fluorescence quenching in the solid-state. Here, we have constructed the first mononuclear Fe^Ⅱ complex decorated with an aggregation-induced emission (AIE) luminophore (i.e., tetraphenylethylene) that exhibits synergistic SCO and fluorescence behavior. Intriguingly, we obtained two types of crystals in different solvent systems, both displaying distinct magnetic bistability and fluorescence properties. The fluorescence intensity was observed to track the magnetic susceptibility, which confirmed that SCO and solid-state fluorescence operate synergistically. We introduce a novel approach for the construction of luminescent SCO compounds using an AIEgen as a luminophore, which leads to fluorescence emission in the solid-state, thus allowing us to study the synergy between SCO and fluorescence.
- Magnetic bistability,
- Spin crossover,
- Luminescence,
- Aggregation-induced emission,
- Supramolecular structures
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