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- Title
Manipulation of successive crystalline transformations to control electron transfer and switchable functions.
- Authors
Jiao, Cheng-Qi; Jiang, Wen-Jing; Meng, Yin-Shan; Wen, Wen; Zhao, Liang; Wang, Jun-Li; Hu, Ji-Xiang; Gurzadyan, Gagik G; Duan, Chun-Ying; Liu, Tao
- Abstract
Electron transfer in solid is crucial to switchable magnetic, electrical, optical and mechanical properties. However, it is a formidable challenge to control electron-transfer behaviors via manipulation of crystalline phases, especially through dynamic crystalline transformation. Herein, three crystalline phases of an {Fe2Co2} compound were obtained via enhancement of intermolecular π···π interactions inducing successive single-crystal-to-single-crystal transformations, from solvated <bold>1·2CH3OH·4H2O</bold>, to desolvated <bold>1</bold> and its polymorph <bold>1a</bold> accompanying electron transfer. <bold>1·2CH3OH·4H2O</bold> showed thermally induced reversible intermetallic electron transfer in mother liquor. No electron-transfer behavior was observed in <bold>1</bold>. <bold>1a</bold> showed reversible intermetallic electron transfer upon thermal treatment or alternative irradiation with 808- and 532-nm lasers at cryogenic temperatures. The electron-transfer behaviors significantly change the magnetic and optical properties, providing a strategy to realize different electron-transfer behaviors and switchable functions via π···π interactions manipulated dynamic crystalline transformation.
- Subjects
SINGLE crystals; CHARGE exchange; INTERMOLECULAR interactions
- Publication
National Science Review, 2018, Vol 5, Issue 4, p507
- ISSN
2095-5138
- Publication type
Article
- DOI
10.1093/nsr/nwy033