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Solvatochromic Photoluminescent Effects in All‐Inorganic Manganese(II)‐Based Perovskites by Highly Selective Solvent‐Induced Crystal‐to‐Crystal Phase Transformations
Author(s) -
Xiao Hui,
Dang Peipei,
Yun Xiaohan,
Li Guogang,
Wei Yi,
Wei Yi,
Xiao Xiao,
Zhao Yajie,
Molokeev Maxim S.,
Cheng Ziyong,
Lin Jun
Publication year - 2021
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.202012383
Subject(s) - photoluminescence , solvatochromism , crystal (programming language) , perovskite (structure) , dimethylacetamide , crystallization , crystal structure , dimethylformamide , solvent , materials science , luminescence , crystallography , phase (matter) , manganese , chemistry , single crystal , photochemistry , organic chemistry , optoelectronics , computer science , programming language
The development of lead‐free perovskite photoelectric materials has been an extensive focus in the recent years. Herein, a novel one‐dimensional (1D) lead‐free CsMnCl 3 (H 2 O) 2 single crystal is reported with solvatochromic photoluminescence properties. Interestingly, after contact with N,N‐dimethylacetamide (DMAC) or N,N‐dimethylformamide (DMF), the crystal structure can transform from 1D CsMnCl 3 (H 2 O) 2 to 0D Cs 3 MnCl 5 and finally transform into 0D Cs 2 MnCl 4 (H 2 O) 2 . The solvent‐induced crystal‐to‐crystal phase transformations are accompanied by loss and regaining of water of crystallization, leading to the change of the coordination number of Mn 2+ . Correspondingly, the luminescence changes from red to bright green and finally back to red emission. By fabricating a test‐paper containing CsMnCl 3 (H 2 O) 2 , DMAC and DMF can be detected quickly with a response time of less than one minute. These results can expand potential applications for low‐dimensional lead‐free perovskites.