|
|||||
|
|
ESIPT-Inspired Dual-Mode Photoswitches with Fast Molecular Isomerization in the Solid State |
|
| Authors: | Dr. Yahui Chen You Rim Lee Wenjing Wang Yu Fang Dr. Sheng Lu Dr. Jingjing Han Prof. Xiaoqiang Chen Prof. Myung Hwa Kim Prof. Juyoung Yoon |
| Affiliation: | 1. Department of Chemistry and Nanoscience, Ewha Womans University, Seoul, 03760 Korea New and Renewable Energy Research Center, Ewha Womans University, Seoul, 03760 Korea These authors contributed equally to this work.;2. Department of Chemistry and Nanoscience, Ewha Womans University, Seoul, 03760 Korea These authors contributed equally to this work.;3. State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, Nanjing, 211816 China These authors contributed equally to this work.;4. State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, Nanjing, 211816 China;5. Department of Chemistry and Nanoscience, Ewha Womans University, Seoul, 03760 Korea |
| Abstract: | Photoswitchable materials have attracted considerable attention in various fields. Developing excellent solid-state dual-mode photoswitches is an important but challenging task. Herein, we propose a new strategy to construct an excited-state intramolecular proton transfer (ESIPT) inspired photoswitch ( DiAH-pht ) that possesses aggregation-induced emission (AIE) features and displays a fast molecular isomerization process characterized by dual-mode behavior in the solid state. Mechanistic studies indicate that introduction of a bulky group can create a folded molecular conformation that provides adequate volume to facilitate photoisomerization and the enhanced ESIPT effect can boost the isomerization process. The feasibility of our strategy was further demonstrated by the activated photoisomerization performance of the Schiff base derivatives. Furthermore, DiAH-pht shows good performance in the fields of dual-mode information encryption and high-density data storage. |
| Keywords: | Aggregation-Induced Emission Dual-Mode Excited-State Intramolecular Proton Transfer Information Encryption Solid-State Photoswitches |