Real-time optical and electronic sensing with a β-amino enone linked, triazine-containing 2D covalent organic framework
Tóm tắt
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. Aromatic two-dimensional covalent organic frameworks (2D COFs) are hailed as candidates for electronic and optical devices, yet only few applications were demonstrated. Here, the authors show a triazine based COF with UV/VIS real-time response and increase in bulk conductivity to HCl vapour as a chemical trigger.
Tài liệu tham khảo
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