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.