Jump to main content
Jump to site search


Highly photoluminescent two-dimensional imine-based covalent organic frameworks for chemical sensing

Author affiliations

Abstract

The strong π–π interactions in the stacking layers of two-dimensional covalent organic frameworks (2D-COFs), together with rotationally labile imine linkages, make most of the solid state imine-linked COFs non-fluorescent due to fluorescence quenching processes. Here, we report the successful synthesis of highly photoluminescent imine-based 2D-COFs by integrating a non-planar building unit with a pyrene-based unit and transforming the COF into spherical, sub-micron particles. High photoluminescence quantum yields (PLQY) were achieved with COF sub-micron particles dispersed in organic solvents. The as-prepared COF sub-micron particles can be used as a chemical sensor for the detection of explosive chemicals, with high sensitivity and selectivity (up to ppm level).

Graphical abstract: Highly photoluminescent two-dimensional imine-based covalent organic frameworks for chemical sensing

Back to tab navigation

Supplementary files

Publication details

The article was received on 26 Dec 2017, accepted on 05 Feb 2018 and first published on 13 Feb 2018


Article type: Communication
DOI: 10.1039/C7CC09866A
Citation: Chem. Commun., 2018, Advance Article
  •   Request permissions

    Highly photoluminescent two-dimensional imine-based covalent organic frameworks for chemical sensing

    Q. Gao, X. Li, G. Ning, K. Leng, B. Tian, C. Liu, W. Tang, H. Xu and K. P. Loh, Chem. Commun., 2018, Advance Article , DOI: 10.1039/C7CC09866A

Search articles by author

Spotlight

Advertisements