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Fabrication of amido group functionalized carbon quantum dots and its transparent luminescent epoxy matrix composites
Author(s) -
Chen Lanlan,
Zhang Chen,
Du Zhongjie,
Li Hangquan,
Zhang Li,
Zou Wei
Publication year - 2015
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.42667
Subject(s) - epoxy , materials science , composite material , luminescence , composite number , curing (chemistry) , fabrication , amine gas treating , dispersion (optics) , chemistry , organic chemistry , optoelectronics , physics , optics , medicine , alternative medicine , pathology
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@NH 2 , and composites studied in this article are denoted as CQDs@NH 2 /epoxy. It is found that the dispersion of CQDs@NH 2 in epoxy matrix is effectively improved with the bridge of covalent bonding interface. As a result, the homogenously dispersed CQDs@NH 2 reduce light scattering. And more than double increased transparency and eightfold enhanced luminescence of CQDs@NH 2 /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.