Issue 35, 2024

Light-up covalent organic frameworks with flexible wall design for chemical sensing

Abstract

Covalent organic frameworks (COFs) are a novel type of nanoporous and crystalline polymers with a precise and highly conjugated skeleton, making them promising candidates for constructing emissive materials. However, the strong high conjugation structures between adjacent layers easily lead to aggregation-caused quenching (ACQ) of emission properties. In this study, we have designed COFs with a flexible skeleton to suppress ACQ effects, enhancing their luminescence activity. In addition, the high density of nitrogen and oxygen atoms on these flexible walls serves as binding sites for hydrogen bonding interactions, indicating sensitivity and selectivity towards nitro-explosives. This strategy establishes a new approach for creating luminescent materials for chemical sensors.

Graphical abstract: Light-up covalent organic frameworks with flexible wall design for chemical sensing

Supplementary files

Article information

Article type
Paper
Submitted
24 Jun 2024
Accepted
04 Aug 2024
First published
08 Aug 2024
This article is Open Access
Creative Commons BY-NC license

CrystEngComm, 2024,26, 4871-4875

Light-up covalent organic frameworks with flexible wall design for chemical sensing

W. Zhao, C. Xing, Y. Zhang, J. Ren and H. Li, CrystEngComm, 2024, 26, 4871 DOI: 10.1039/D4CE00635F

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