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

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 ?-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.

SUBMITTER: Kulkarni R

PROVIDER: S-EPMC6642192 | biostudies-literature | 2019 Jul

REPOSITORIES: biostudies-literature

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

Kulkarni Ranjit R Noda Yu Y Kumar Barange Deepak D Kochergin Yaroslav S YS Lyu Pengbo P Balcarova Barbora B Nachtigall Petr P Bojdys Michael J MJ

Nature communications 20190719 1

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 ma ...[more]

PMID: 31324876

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