title: A green heterogeneous synthesis of N-doped carbon dots and their photoluminescence applications in solid and aqueous states.
abstract: Compared with traditional semiconductor quantum dots (QDs) and organic dyes, photoluminescent carbon dots (CDs) are superior because of their high aqueous solubility, robust chemical inertness, facile functionalization, high resistance to photobleaching, low toxicity and good biocompatibility. Herein, a green, large-scale and high-output heterogeneous synthesis of N-doped CDs was developed by reacting calcium citrate and urea under microwave irradiation without the use of any capping agents. The obtained N-doped CDs with a uniform size distribution exhibit good aqueous solubility and yellowish-green fluorescence in the solid and aqueous states. These unique luminescence properties of N-doped CDs inspire new thoughts for applications as fluorescent powders, fluorescent inks, the growth of fluorescent bean sprouts, and fingerprint detection tools.
authors: Key Laboratory for Thin Film and Microfabrication of Ministry of Education, Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China. zhiyang@sjtu.edu.cn yfzhang@sjtu.edu.cn.
authors: Minghan
authors: M
authors: Xu
authors: Guili
authors: G
authors: He
authors: Zhaohui
authors: Z
authors: Li
authors: Fengjiao
authors: F
authors: He
authors: Feng
authors: F
authors: Gao
authors: Yanjie
authors: Y
authors: Su
authors: Liying
authors: L
authors: Zhang
authors: Zhi
authors: Z
authors: Yang
authors: Yafei
authors: Y
authors: Zhang