A Conjugated Polymeric Supramolecular Network with Aggregation‐Induced Emission Enhancement: An Efficient Light‐Harvesting System with an Ultrahigh Antenna Effect
| Autor: | Huanfeng Jiang, Linxian Xu, Hao Tang, Rongrong Wang, Lingyun Wang, Zaiyu Wang, Xuewen He, Derong Cao, Ben Zhong Tang |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
010405 organic chemistry Energy transfer Supramolecular chemistry Pillar Antenna effect General Chemistry General Medicine Conjugated system 010402 general chemistry Photochemistry 01 natural sciences Catalysis 0104 chemical sciences Molecular wire Aggregation-induced emission Solid film |
| Zdroj: | Angewandte Chemie. 132:9994-9999 |
| ISSN: | 1521-3757 0044-8249 |
| DOI: | 10.1002/ange.201907678 |
| Popis: | Superior artificial light-harvesting systems (ALHSs) require exceptional capacity in harvesting light and transferring energy. In this work, we report a novel strategy to build ALHSs with an unprecedented antenna effect (35.9 in solution and 90.4 in solid film). The ALHSs made use of a conjugated polymeric supramolecular network (CPSN), a crosslinked network obtained from the self-assembly of a pillar[5]arene-based conjugated polymeric host (CPH) and conjugated ditopic guests (Gs). The excellent performance of the CPSN could be attributed to the following factors: 1) The "molecular wire effect" of the conjugated polymeric structure, 2) aggregation-induced enhanced emission (AEE) moieties in the CPH backbone, and 3) high capacity of donor-acceptor energy transfer, and 4) crosslinked structures triggered by the host-guest binding between Gs and CPH. Moreover, the emission of the CPSN could be tuned by using different Gs or varying the host/guest ratio, thus reaching a 96 % sRGB area. |
| Databáze: | OpenAIRE |
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