Fluorine-containing graphene quantum dots with a high singlet oxygen generation applied for photodynamic therapy - Li, Zhenzhen; Wang, Dong; Xu, Mingsheng; Wang, Jingmin; Hu, Xiaolong; Anwar, Sadat; Tedesco, Antônio Cláudio; Morais, Paulo Cesar; Bi, Hong (Journal of Materials Chemistry B, 2020)