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Real-Time Optical and Electronic Sensing with a β-Amino Enone Linked, Triazine-Containing 2D Covalent Organic Framework

preprint
submitted on 09.04.2019 and posted on 10.04.2019 by Ranjit Kulkarni, Yu Noda, Deepak K. Barange, Yaroslav S. Kochergin, Barbora Balcarova, Pengbo Lyu, Petr Nachtigal, Michael J. Bojdys
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.

Funding

European Research Council (BEGMAT-678462)

History

Email Address of Submitting Author

m.j.bojdys.02@cantab.net

Institution

Humboldt-Universität zu Berlin

Country

Germany

ORCID For Submitting Author

0000-0002-2592-4168

Declaration of Conflict of Interest

No conflict of interest.

Version Notes

Under review in Nature Communications NCOMMS-19-04469A.

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