化学
乙腈
甲醇
苯
荧光
共价键
冷凝
检出限
溶剂
有机化学
化学工程
色谱法
量子力学
热力学
物理
工程类
作者
Yujie Chen,Caiyun Zhang,Jiangyang Xie,Haijie Li,Wenjing Dai,Qiling Deng,Shuo Wang
标识
DOI:10.1016/j.aca.2020.03.003
摘要
A highly crystalline covalent organic frameworks (COFs) formed by condensation reaction between 1, 3, 5-tris (4-aminophenyl) benzene and 4, 4'-biphenyldicarboxaldehyde is utilized as a sensing platform for water in organic solvent over a broad concentration range. The resulting COFs exhibits brilliant fluorescence in various organic solvents such as methanol, DMF, acetonitrile and ethanol, moreover its fluorescence intensity has a significant and rapid response to the content of water in organic solvent over a broad concentration range. The broadest sensing range is achieved over 7%-70% (v/v) for water in DMF, and the lowest limit of detection is 0.042% (v/v) for water in methanol among the investigated organic solvents. The superior properties of the sensing platform expand the application ranges of COFs and endow the resulting COFs with a great prospect in practical applications for highly efficient detecting water in organic solvent.
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