期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 60, 期 7, 页码 3699-3707出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202012383
关键词
lead-free materials; low-dimensional perovskites; luminescence; manganese; phase transitions
资金
- National Natural Science Foundation of China [NSFC 51932009, 51772288, 52072349, 51672259]
- Joint Fund Project to Promote Science and Technology Cooperation Across the Taiwan Straits [U2005212]
- Chinese Government [2017YFE0132300]
- Australian Government [2017YFE0132300]
- CAS-Croucher Funding Scheme for Joint Laboratories [CAS18204]
- Chinese Academy of Sciences [YZDY-SSWJSC018]
The study introduces a novel one-dimensional lead-free CsMnCl3(H2O)2 single crystal with solvatochromic photoluminescence properties, showing crystal structure transformations and luminescence color changes upon contact with specific solvents. A test paper containing CsMnCl3(H2O)2 can quickly detect DMAC and DMF, indicating potential applications for low-dimensional lead-free perovskites.
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 CsMnCl3(H2O)(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 CsMnCl3(H2O)(2) to 0D Cs3MnCl5 and finally transform into 0D Cs2MnCl4(H2O)(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 Mn2+. Correspondingly, the luminescence changes from red to bright green and finally back to red emission. By fabricating a test-paper containing CsMnCl3(H2O)(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.
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