A general design approach toward covalent organic frameworks for highly efficient electrochemiluminescence

Ya-Jie Li, Wei-Rong Cui, Qiao-Qiao Jiang, Qiong Wu, Ru-Ping Liang, Qiu-Xia Luo and Jian-Ding Qiu ()
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Ya-Jie Li: Nanchang University
Wei-Rong Cui: Nanchang University
Qiao-Qiao Jiang: Nanchang University
Qiong Wu: Nanchang University
Ru-Ping Liang: Nanchang University
Qiu-Xia Luo: Nanchang University
Jian-Ding Qiu: Nanchang University

Nature Communications, 2021, vol. 12, issue 1, 1-11

Abstract: Abstract Electrochemiluminescence (ECL) plays a key role in analysis and sensing because of its high sensitivity and low background. Its wide applications are however limited by a lack of highly tunable ECL luminophores. Here we develop a scalable method to design ECL emitters of covalent organic frameworks (COFs) in aqueous medium by simultaneously restricting the donor and acceptor to the COFs’ tight electron configurations and constructing high-speed charge transport networks through olefin linkages. This design allows efficient intramolecular charge transfer for strong ECL, and no exogenous poisonous co-reactants are needed. Olefin-linked donor-acceptor conjugated COFs, systematically synthesized by combining non-ECL active monomers with C2v or C3v symmetry, exhibit strong ECL signals, which can be boosted by increasing the chain length and conjugation of monomers. The present concept demonstrates that the highly efficient COF-based ECL luminophores can be precisely designed, providing a promising direction toward COF-based ECL phosphors.

Date: 2021
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Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-25013-8

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DOI: 10.1038/s41467-021-25013-8

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