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Covalent organic frameworks as a sensing platform for water in organic solvent over a broad concentration range

Authors :
Caiyun Zhang
Wenjing Dai
Haijie Li
Qiliang Deng
Yujie Chen
Jiangyang Xie
Shuo Wang
Source :
Analytica chimica acta. 1109
Publication Year :
2019

Abstract

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.

Details

ISSN :
18734324
Volume :
1109
Database :
OpenAIRE
Journal :
Analytica chimica acta
Accession number :
edsair.doi.dedup.....1922f70f75ff90554fc5a733fe9f4836