Journal article
Yizhou Yang, Amritha P Sandra, Alexander Idström, Clara Schäfer, M. Andersson, L. Evenäs, Karl Börjesson
Journal of the American Chemical Society, 2022
Journal of the American Chemical Society, 2022
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APA
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Yang, Y., Sandra, A. P., Idström, A., Schäfer, C., Andersson, M., Evenäs, L., & Börjesson Karl. (2022). Electroactive Covalent Organic Framework Enabling Photostimulus-Responsive Devices. Journal of the American Chemical Society.
Chicago/Turabian
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Yang, Yizhou, Amritha P Sandra, Alexander Idström, Clara Schäfer, M. Andersson, L. Evenäs, and Börjesson Karl. “Electroactive Covalent Organic Framework Enabling Photostimulus-Responsive Devices.” Journal of the American Chemical Society (2022).
MLA
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Yang, Yizhou, et al. “Electroactive Covalent Organic Framework Enabling Photostimulus-Responsive Devices.” Journal of the American Chemical Society, 2022.
BibTeX Click to copy
@article{yizhou2022a,
title = {Electroactive Covalent Organic Framework Enabling Photostimulus-Responsive Devices},
year = {2022},
journal = {Journal of the American Chemical Society},
author = {Yang, Yizhou and Sandra, Amritha P and Idström, Alexander and Schäfer, Clara and Andersson, M. and Evenäs, L. and Börjesson, Karl}
}
Abstract
Two-dimensional covalent organic frameworks (2D COFs) feature graphene-type 2D layered sheets but with a tunable structure, electroactivity, and high porosity. If these traits are well-combined, then 2D COFs can be applied in electronics to realize functions with a high degree of complexity. Here, a highly crystalline electroactive COF, BDFamide-Tp, was designed and synthesized. It shows regularly distributed pores with a width of 1.35 nm. Smooth and successive films of such a COF were fabricated and found to be able to increase the conductivity of an organic semiconductor by 103 by interfacial doping. Upon encapsulation of a photoswitchable molecule (spiropyran) into the voids of the COF layer, the resulted devices respond differently to light of different wavelengths. Specifically, the current output ratio after UV vs Vis illumination reaches 100 times, thus effectively creating on and off states. The respective positive and negative feedbacks are memorized by the device and can be reprogrammed by UV/Vis illumination. The reversible photostimulus responsivity and reliable memory of the device are derived from the combination of electroactivity and porosity of the 2D COF. This work shows the capability of 2D COFs in higher-level electronic functions and extends their possible applications in information storage.