Solid Supramolecular Architecture of a Perylene Diimide Derivative for Fluorescent Enhancement |
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| Authors: | Dr Yanwen Yu Dr Qinghua Shi Prof Yongjun Li Dr Taifeng Liu Dr Liang Zhang Prof Zhigang Shuai Prof Yuliang Li |
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| Institution: | 1. Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (P.R. China), Fax: (+86)?10‐82616576;2. Graduate University of Chinese Academy of Sciences, Beijing 100049 (P.R. China) |
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| Abstract: | A new p‐phenylenevinylene‐linked perylene diimide has been synthesized and self‐assembled for the formation of zero‐dimensional molecular aggregate structures of nanospheres and vesicles through solvent tuning. The solid‐state optical properties induced by a special wavelength laser were studied and the results indicated excellent fluorescent enhancement properties. The emission intensity of these aggregates increased with elongation of the laser irradiation time. Based on the analysis of variable‐temperature 1H NMR spectra, DFT calculations, and the single‐crystal structure of the linkage group, a conformation‐dependent fluorescent enhancement mechanism could be demonstrated. The mechanism is different from the fluorescent bleaching of normal solid‐state fluorescent materials and offers potential applications in optical devices. |
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| Keywords: | conformation analysis fluorescence perylene diimides self‐assembly |
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