Discrete Dimeric Anthracene Stackings in Solids with Enhanced Excimer Fluorescence
| Autor: | Changjiang Zhou, Bing Yang, Yunpeng Ge, Yue Shen, Yating Wen, Haichao Liu, Dengli Cong, Jun Wang, Ling Ye, Xiaohui Tang, Bao Li |
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| Rok vydání: | 2017 |
| Předmět: |
Anthracene
Intermolecular force 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Photochemistry Excimer 01 natural sciences Fluorescence 0104 chemical sciences Organic semiconductor chemistry.chemical_compound chemistry Optical materials General Materials Science 0210 nano-technology Luminous efficacy |
| Zdroj: | Crystal Growth & Design. 17:2945-2949 |
| ISSN: | 1528-7505 1528-7483 |
| DOI: | 10.1021/acs.cgd.7b00460 |
| Popis: | Polyaromatic compounds are significant members of leading candidates for organic semiconductors and optical materials. However, a thorny problem of polyaromatic materials is that their good emissive abilities in solutions are seriously weakened in solids due to strong π–π interactions between aromatics. As a typical case, the intermolecular π–π interaction tends to form excimers for polyaromatic system, which were always considered to quench fluorescence and decrease luminous efficiency in the past decades. Herein, anthracene is modified by meta-substituted bromobenzene to facilitate the formation of discrete dimeric stack in solids, leading to the enhanced anthracene excimer fluorescence. Particularly, instead of excimer quenching fluorescence, the more anthracene dimers in solids, the higher fluorescence efficiency, namely, excimer-induced enhanced solid-state emission. This work not only provides a meta-substituted strategy for molecular design to form excimer in solids but also demonstrates that high-... |
| Databáze: | OpenAIRE |
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