Chemical sensing in two dimensional porous covalent organic nanosheets

Das G, Biswal BP, Kandambeth S, Venkatesh V, Kaur G, Addicoat M, Heine T, Verma S, Banerjee R (2015)

Publication Type: Journal article

Publication year: 2015

Journal

Chemical Science Royal Society of Chemistry

Book Volume: 6

Pages Range: 3931-3939

Journal Issue: 7

DOI: 10.1039/c5sc00512d

Abstract

Two new imide-based crystalline, porous, and chemically stable covalent organic frameworks (COFs) (TpBDH and TfpBDH) have been successfully synthesized employing solvothermal crystallization route. Furthermore, thin layered covalent organic nanosheets (CONs) were derived from these bulk COFs by the simple liquid phase exfoliation method. These 2D CONs showcase increased luminescence intensity compared to their bulk counterparts (COFs). Notably, TfpBDH-CONs showcase good selectivity and prominent, direct visual detection towards different nitroaromatic analytes over TpBDH-CONs. Quite interestingly, TfpBDH-CONs exhibit a superior "turn-on" detection capability for 2,4,6-trinitrophenol (TNP) in the solid state, but conversely, they also show a "turn-off" detection in the dispersion state. These findings describe a new approach towards developing an efficient, promising fluorescence chemosensor material for both visual and spectroscopic detection of nitroaromatic compounds with very low [10-5 (M)] analyte concentrations.

Involved external institutions

National Chemical Laboratory (NCL) IN India (IN) Indian Institute of Technology Kanpur (IITK) IN India (IN) Jacobs University Bremen gGmbH DE Germany (DE)

How to cite

APA:

Das, G., Biswal, B.P., Kandambeth, S., Venkatesh, V., Kaur, G., Addicoat, M.,... Banerjee, R. (2015). Chemical sensing in two dimensional porous covalent organic nanosheets. Chemical Science, 6(7), 3931-3939. https://doi.org/10.1039/c5sc00512d

MLA:

Das, Gobinda, et al. "Chemical sensing in two dimensional porous covalent organic nanosheets." Chemical Science 6.7 (2015): 3931-3939.

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