One-pot synthesis of boron and nitrogen co- doped carbon dots as a photoluminescent label-free probe for Cr(VI) and dopamine Tian Tian, [b] Yu He, *[a,b] Yili Ge, [a,b] Gongwu Song *[a,b] a. Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Wuhan 430062, Hubei University, Wuhan 430062, China. b. Ministry-of-Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, China. Dr. Yu He, Telephone number: 862788662747,Email: [email protected] Prof. Song, Telephone number: 862788662747, Email: [email protected] Fig. S1 The influence of different synthesis parameters (a) the amount of NaOH (0~0.08 mM), (b) reaction temperature (120~200 ℃), (c) reaction time (1~8 h) on the fluorescence intensity of N/B-CDs. 1