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

Yujie Chen; Caiyun Zhang; Jiangyang Xie; Haijie Li; Wenjing Dai; Qiliang Deng; Shuo Wang

doi:10.1016/j.aca.2020.03.003

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

Anal Chim Acta. 2020 May 1:1109:114-121. doi: 10.1016/j.aca.2020.03.003. Epub 2020 Mar 6.

Authors

Yujie Chen¹, Caiyun Zhang¹, Jiangyang Xie¹, Haijie Li¹, Wenjing Dai¹, Qiliang Deng², Shuo Wang³

Affiliations

¹ College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin, 300457, China.
² College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin, 300457, China. Electronic address: yhdql@tust.edu.cn.
³ College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin, 300457, China; Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin, 300071, China. Electronic address: S.wang@tust.edu.cn.

PMID: 32252894
DOI: 10.1016/j.aca.2020.03.003

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.

Keywords: Covalent organic frameworks; Fluorescence sensor; Sensing platforms; Sensing water.