Kulkarni Ranjit, Noda Yu, Kumar Barange Deepak, Kochergin Yaroslav S, Lyu Pengbo, Balcarova Barbora, Nachtigall Petr, Bojdys Michael J
Department of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Str. 2, 12489, Berlin, Germany.
Institute of Organic Chemistry and Biochemistry of the CAS, Flemingovo nám. 2, Prague, 166 10, Czech Republic.
Nat Commun. 2019 Jul 19;10(1):3228. doi: 10.1038/s41467-019-11264-z.
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 (NH 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.
全芳香二维共价有机框架（2D COF）被誉为电子和光学器件的候选材料，但迄今为止，很少有应用真正利用其合理的预测设计原则和永久孔隙结构。在此，我们展示了一种由抗化学腐蚀的β-氨基烯酮桥和路易斯碱性三嗪部分组成的二维共价有机框架，它在可见光谱中表现出显著的实时响应，并且在接触化学触发物——腐蚀性HCl蒸汽时，体积电导率提高了两个数量级。使用化学开关（NH蒸汽）或物理触发因素（温度或真空），光学和电子响应是完全可逆的。这些发现证明了全芳香二维共价有机框架作为实时响应化学传感器和开关的有用应用。
