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An AIEgen-based 3D covalent organic framework for white light-emitting diodes
Stockholm University, Faculty of Science, Department of Materials and Environmental Chemistry (MMK). Peking University, China.
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Number of Authors: 102018 (English)In: Nature Communications, ISSN 2041-1723, E-ISSN 2041-1723, Vol. 9, article id 5234Article in journal (Refereed) Published
Abstract [en]

The design and synthesis of three-dimensional covalent organic frameworks (3D COFs) have still been considered as a big challenge. Here we report the design and synthesis of an AIEgen-based 3D COF (3D-TPE-COF), with a high surface area (1084 m(2)g(-1)). According to powder X-ray diffraction and continuous rotation electron diffraction analyses, 3D-TPE-COF is identified to adopt a seven-fold interpenetrated pts topology. Interestingly, 3D-TPE-COF emits yellow fluorescence upon excitation, with a photoluminescence quantum yield of 20%. Moreover, by simply coating 3D-TPE-COF onto a commercial blue light-emitting diode (LED), a prototype white LED (WLED) under continuously driving without degradation for 1200 h was demonstrated. The present work suggests the possibility of using COF materials for stable WLEDs, which will greatly inspire us to design and synthesize fluorescent 3D COFs and facilitate the development of COF-based WLEDs in future.

Place, publisher, year, edition, pages
2018. Vol. 9, article id 5234
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Chemical Sciences
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URN: urn:nbn:se:su:diva-163700DOI: 10.1038/s41467-018-07670-4ISI: 000452633000002PubMedID: 30532031OAI: oai:DiVA.org:su-163700DiVA, id: diva2:1280252
Available from: 2019-01-18 Created: 2019-01-18 Last updated: 2019-01-18Bibliographically approved

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