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Donor‐Acceptor Type Covalent Organic Frameworks
Author(s) -
Zhao Jinwei,
Ren Junyu,
Zhang Guang,
Zhao Ziqiang,
Liu Shiyong,
Zhang Wandong,
Chen Long
Publication year - 2021
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.202101135
Subject(s) - covalent bond , acceptor , charge (physics) , intermolecular force , materials science , nanotechnology , charge carrier , polymer , molecule , förster resonance energy transfer , chemical physics , fluorescence , chemistry , optoelectronics , physics , organic chemistry , optics , quantum mechanics , composite material , condensed matter physics
Intermolecular charge transfer (ICT) effect has been widely studied in both small molecules and linear polymers. Covalently‐bonded donor‐acceptor pairs with tunable bandgaps and photoelectric properties endow these materials with potential applications in optoelectronics, fluorescent bioimaging, and sensors, etc. However, owing to the lack of charge transfer pathway or effective separation of charge carriers, unfavorable charge recombination gives rise to inevitable energy loss. Covalent organic frameworks (COFs) can be mediated with various geometry‐ and property‐tailored building blocks, where donor (D) and acceptor (A) segments are connected by covalent bonds and can be finely arranged to form highly ordered networks (namely D−A COFs). The unique structural features of D−A COFs render the formation of segregated D−A stacks, thus provides pathways and channels for effective charge carriers transport. This review highlights the significant progress on D−A COFs over the past decade with emphasis on design principles, growing structural diversities, and promising application potentials.