Fabrication of amido group functionalized carbon quantum dots and its transparent luminescent epoxy matrix composites |
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| Authors: | Lanlan Chen Chen Zhang Zhongjie Du Hangquan Li Li Zhang Wei Zou |
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| Affiliation: | 1. Key Laboratory of Carbon Fiber and Functional Polymers (Beijing University of Chemical Technology, Ministry of Education), Beijing, People's Republic of China;2. China National Chemical Corporation, Beijing, People's Republic of China |
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| Abstract: | Functional amido groups are modified onto the surface of carbon quantum dots (CQDs) in order to provide reactive groups. The modified CQDs are subsequently added into amine cured epoxy resin system. After curing reaction, transparent and luminescent composites are obtained. The modified CQDs are denoted as CQDs@NH2, and composites studied in this article are denoted as CQDs@NH2/epoxy. It is found that the dispersion of CQDs@NH2 in epoxy matrix is effectively improved with the bridge of covalent bonding interface. As a result, the homogenously dispersed CQDs@NH2 reduce light scattering. And more than double increased transparency and eightfold enhanced luminescence of CQDs@NH2/epoxy are obtained compared with original CQDs@COONa/epoxy composites. This composite has potential for encapsulating materials in white light‐emitting diodes. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132, 42667. |
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| Keywords: | composites optical properties surfaces and interfaces |
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