A real-time optical and electronic chemical sensor based on 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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Apr 12, 2019
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Received Date: 10th February 19

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.

Read in full at ChemRxiv.

This is an abstract of a preprint hosted on an independent third party site. It has not been peer reviewed but is currently under consideration at Nature Communications.

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