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A Conjugated Polymeric Supramolecular Network with Aggregation‐Induced Emission Enhancement: An Efficient Light‐Harvesting System with an Ultrahigh Antenna Effect
Author(s) -
Xu Linxian,
Wang Zaiyu,
Wang Rongrong,
Wang Lingyun,
He Xuewen,
Jiang Huanfeng,
Tang Hao,
Cao Derong,
Tang Ben Zhong
Publication year - 2020
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201907678
Subject(s) - conjugated system , supramolecular chemistry , acceptor , materials science , energy transfer , antenna (radio) , photochemistry , pillar , antenna effect , chemistry , polymer , optoelectronics , luminescence , molecule , organic chemistry , telecommunications , chemical physics , computer science , physics , structural engineering , engineering , composite material , condensed matter physics
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.