发射共价有机框架：通过柔性构件改进荧光和硝基芳香族炸药的选择性传感。

IF 4.2 3区化学 Q2 POLYMER SCIENCE

Macromolecular Rapid Communications Pub Date : 2024-09-28 DOI:10.1002/marc.202400673

Yuwei Zhang, Dongxue Wei, Wenzhuo Zhang, Yanning Zhao, Xiaolong Luo, He Li

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引用次数: 0

摘要

二维共价有机框架（COFs）因其轻质、坚固和高度有序的多孔结构而对荧光传感具有吸引力。然而，共价有机框架相邻层之间的高度共轭结构往往会导致聚集引起的淬灭（ACQ）特性。本研究设计了两种柔性肼连接 COF，以抑制 ACQ 效应，从而提高其发光活性。此外，这些柔性壁上高密度的氮原子和氧原子可作为氢键相互作用的结合位点，从而显示出对 2,4,6-三硝基苯酚检测的灵敏度和选择性。

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Emissive Covalent Organic Frameworks: Improved Fluorescence via Flexible Building Blocks and Selective Sensing of Nitroaromatic Explosives.

2D covalent organic frameworks (COFs) are attractive for fluorescence sensing due to their lightweight, robust, and highly ordered porous structures. However, the highly conjugated structures between adjacent layers of covalent organic frameworks can often result in aggregation-caused quenching (ACQ) properties. Here, the study designs two flexible hydrazone-linked COFs to suppress ACQ effects, thereby enhancing their luminescent activities. Furthermore, 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 2,4,6-trinitrophenol detection.

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来源期刊

Macromolecular Rapid Communications 工程技术-高分子科学

CiteScore

7.70

自引率

6.50%

发文量

477

审稿时长

1.4 months

期刊介绍： Macromolecular Rapid Communications publishes original research in polymer science, ranging from chemistry and physics of polymers to polymers in materials science and life sciences.