| Autor: |
Yafei Shi, Yi Zeng, Pavel Kucheryavy, Xiaodong Yin, Kai Zhang, Guoyun Meng, Jinfa Chen, Qian Zhu, Nan Wang, Xiaoyan Zheng, Frieder Jäkle, Pangkuan Chen |
| Rok vydání: |
2022 |
| Předmět: |
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| Zdroj: |
Angewandte Chemie (International ed. in English). 61(51) |
| ISSN: |
1521-3773 |
| Popis: |
Ultralong afterglow emissions due to room-temperature phosphorescence (RTP) are of paramount importance in the advancement of smart sensors, bioimaging and light-emitting devices. We herein present an efficient approach to achieve rarely accessible phosphorescence of heavy atom-free organoboranes via photochemical switching of sterically tunable fluorescent Lewis pairs (LPs). LPs are widely applied in and well-known for their outstanding performance in catalysis and supramolecular soft materials but have not thus far been exploited to develop photo-responsive RTP materials. The intramolecular LP M1BNM not only shows a dynamic response to thermal treatment due to reversible N→B coordination but crystals of M1BNM also undergo rapid photochromic switching. As a result, unusual emission switching from short-lived fluorescence to long-lived phosphorescence (rad-M1BNM, τ |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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