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https://doi.org/10.1038/s41467-018-04769-6
Title: | Tuneable near white-emissive two-dimensional covalent organic frameworks | Authors: | Li, Xing Gao, Qiang Wang, Juefan Chen, Yifeng Chen, Zhi-Hui Xu, Hai-Sen Tang, Wei Leng, Kai Ning, Guo-Hong Wu, Jishan Xu, Qing-Hua Quek, Su Ying Lu, Yixin Loh, Kian Ping |
Keywords: | Science & Technology Multidisciplinary Sciences Science & Technology - Other Topics CRYSTALLINE STACKING HYDROGEN STORAGE |
Issue Date: | 13-Jun-2018 | Publisher: | NATURE PUBLISHING GROUP | Citation: | Li, Xing, Gao, Qiang, Wang, Juefan, Chen, Yifeng, Chen, Zhi-Hui, Xu, Hai-Sen, Tang, Wei, Leng, Kai, Ning, Guo-Hong, Wu, Jishan, Xu, Qing-Hua, Quek, Su Ying, Lu, Yixin, Loh, Kian Ping (2018-06-13). Tuneable near white-emissive two-dimensional covalent organic frameworks. NATURE COMMUNICATIONS 9 (1). ScholarBank@NUS Repository. https://doi.org/10.1038/s41467-018-04769-6 | Abstract: | © 2018 The Author(s). Most two-dimensional (2D) covalent organic frameworks (COFs) are non-fluorescent in the solid state even when they are constructed from emissive building blocks. The fluorescence quenching is usually attributed to non-irradiative rotation-related or π-π stacking-caused thermal energy dissipation process. Currently there is a lack of guiding principle on how to design fluorescent, solid-state material made of COF. Herein, we demonstrate that the eclipsed stacking structure of 2D COFs can be used to turn on, and tune, the solid-state photoluminescence from non-emissive building blocks by the restriction of intramolecular bond rotation via intralayer and interlayer hydrogen bonds among highly organized layers in the eclipse-stacked COFs. Our COFs serve as a platform whereby the size of the conjugated linkers and side-chain functionalities can be varied, rendering the emission colour-tuneable from blue to yellow and even white. This work provides a guide to design new solid-state emitters using COFs. | Source Title: | NATURE COMMUNICATIONS | URI: | https://scholarbank.nus.edu.sg/handle/10635/167667 | ISSN: | 2041-1723 2041-1723 |
DOI: | 10.1038/s41467-018-04769-6 |
Appears in Collections: | Staff Publications Elements |
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File | Description | Size | Format | Access Settings | Version | |
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Tuneable Near White-Emissive Two-Dimensional COFs_2018.pdf | Accepted version | 1.49 MB | Adobe PDF | OPEN | Published | View/Download |
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