Please use this identifier to cite or link to this item: https://doi.org/10.1039/c7cc09866a
Title: Highly photoluminescent two-dimensional imine-based covalent organic frameworks for chemical sensing
Authors: Gao, Qiang 
Li, Xing 
Ning, Guo-Hong 
Leng, Kai 
Tian, Bingbing 
Liu, Cuibo 
Tang, Wei 
Xu, Hai-Sen
Loh, Kian Ping 
Keywords: Science & Technology
Physical Sciences
Chemistry, Multidisciplinary
Chemistry
COUPLING REACTION
DIFFERENT KINDS
CO2 CAPTURE
FLUORESCENCE
CONSTRUCTION
STORAGE
PORES
Issue Date: 7-Mar-2018
Publisher: ROYAL SOC CHEMISTRY
Citation: Gao, Qiang, Li, Xing, Ning, Guo-Hong, Leng, Kai, Tian, Bingbing, Liu, Cuibo, Tang, Wei, Xu, Hai-Sen, Loh, Kian Ping (2018-03-07). Highly photoluminescent two-dimensional imine-based covalent organic frameworks for chemical sensing. CHEMICAL COMMUNICATIONS 54 (19) : 2349-2352. ScholarBank@NUS Repository. https://doi.org/10.1039/c7cc09866a
Abstract: © The Royal Society of Chemistry 2018. 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).
Source Title: CHEMICAL COMMUNICATIONS
URI: https://scholarbank.nus.edu.sg/handle/10635/167655
ISSN: 1359-7345
1364-548X
DOI: 10.1039/c7cc09866a
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