Multicolor Tunable Emission from Organogels Containing Tetraphenylethene,Perylenediimide, and Spiropyran Derivatives |
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| Authors: | Qun Chen Deqing Zhang Guanxin Zhang Xingyuan Yang Yu Feng Qinghua Fan Daoben Zhu |
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| Affiliation: | 1. Beijing National Laboratory for Molecular Sciences, CAS Key Laboratories of Organic Solids, and Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (China);2. Graduate School of Chinese Academy of Sciences, Beijing, 100190 (China) |
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| Abstract: | A dendron‐substituted tetraphenylethene low molecular weight gelator (LMWG)compound, LMWG 1, is designed and investigated. Gelation‐induced fluorescence enhancement is observed for the gel based on LMWG 1 and its fluorescence can be reversibly tuned by varying the temperature of the ensemble. The photoinduced energy‐transfer can occur between LMWG 1 and PI 2 (perylene diimide) in the gel phase, but it cannot occur in the corresponding solution. The emission color of the gel of LMWG 1 and PI 2 can be tuned from cyan, yellow, to red by varying the concentration of PI 2 . By taking advantage of the photochromic transformation of spiropyran, the emission color of the organogels based on LMWG 1 and SP 3 can be switched by alternating UV and visible‐light irradiations. The emission color can also be tuned by varying the irradiation time. In this way, organogels based on LMWG 1 with multiemission color can be achieved in the presence of SP 3 after light irradiations. |
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| Keywords: | aggregation‐induced emission nanostructures fluorescence tuning organogels self‐assembly |
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