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Fabrication of Carboxyl Group-Functionalized Carbon Quantum Dots and Its Transparent and Luminescent Epoxy Matrix Nanocomposites for White LED Encapsulation

发文时间:2018-11-13

Fabrication of Carboxyl Group-Functionalized Carbon Quantum Dots and Its Transparent and Luminescent Epoxy Matrix Nanocomposites for White LED Encapsulation

Macramolecular materials and Engineering 2015, 300, 1232-1237

Lanlan Chen, Chen Zhang, Zhongjie Du, Hangquan Li, Li Zhang, Wei Zou

 

摘要:An epoxy resin is filled with carbon quantum dots (CQDs) leading to highly transparent and luminescent nanocomposites. The CQDs are modified to bear carboxyl groups on the surface (denoted as CQDs@COOH), which made the CQDs may participate in the curing reaction of the epoxy and homogeneously disperse in the matrix. As a result, the light scattering is avoided and transparency of the filled epoxy is enhanced. Besides, the CQDs@COOH-filled epoxy also exhibit better UV and thermal stabilities than traditional CdSe-QDs/epoxy system.