Real-time optical and electronic sensing with a β-amino enone linked, triazine-containing 2D covalent organic framework

Ranjit Kulkarni, Yu Noda, Deepak Kumar Barange, Yaroslav S. Kochergin, Pengbo Lyu, Barbora Balcarova, Petr Nachtigall and Michael J. Bojdys ()
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Ranjit Kulkarni: Humboldt-Universität zu Berlin
Yu Noda: Humboldt-Universität zu Berlin
Deepak Kumar Barange: Institute of Organic Chemistry and Biochemistry of the CAS
Yaroslav S. Kochergin: Humboldt-Universität zu Berlin
Pengbo Lyu: Charles University in Prague
Barbora Balcarova: Institute of Organic Chemistry and Biochemistry of the CAS
Petr Nachtigall: Charles University in Prague
Michael J. Bojdys: Humboldt-Universität zu Berlin

Nature Communications, 2019, vol. 10, issue 1, 1-8

Abstract: Abstract Fully-aromatic, two-dimensional covalent organic frameworks (2D COFs) are hailed as candidates for electronic and optical devices, yet to-date few applications emerged that make genuine use of their rational, predictive design principles and permanent pore structure. Here, we present a 2D COF made up of chemoresistant β-amino enone bridges and Lewis-basic triazine moieties that exhibits a dramatic real-time response in the visible spectrum and an increase in bulk conductivity by two orders of magnitude to a chemical trigger - corrosive HCl vapours. The optical and electronic response is fully reversible using a chemical switch (NH3 vapours) or physical triggers (temperature or vacuum). These findings demonstrate a useful application of fully-aromatic 2D COFs as real-time responsive chemosensors and switches.

Date: 2019
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DOI: 10.1038/s41467-019-11264-z

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