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Development of highly luminescent two-dimensional covalent organic frameworks (COFs) for sensing applications remain challenging. In view of possible quenching mechanisms, we propose a strategy toward interrupting interlayer conjugation by introducing cyclohexane linker units. Experimental and theoretical analysis of the crystalline, imine-connected COFs dis-close weakened π-π stacking and suppressed bond rotation. The resulting COFs feature record-high photoluminescence quan-tum yields of up to 57%. By varying the synthetic protocol, COFs with various stacking modes and porosities are obtained, thus enabling the optimization of the sensing performance.

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• Creative Commons BY Attribution 4.0 International
  

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Date published: 2023-07-05

Publisher: American Chemical Society (ACS)

Journal:

• Journal of the American Chemical Society (ISSN: 00027863) vol. 145 issue. 26 p. 14417-14426

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Manuscript type: Publisher's version (Version of record)

MDR DOI:

First published URL: https://doi.org/10.1021/jacs.3c03614

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Updated at: 2024-06-20 08:30:37 +0900

Published on MDR: 2024-06-20 08:30:37 +0900