Figure 1

(A) The preparation of starch-derived fluorescent C-CNDs and N-CNDs. (B) Starting materials: (a) starch, (b) TAE-buffer 10X, (c) water and (d) C-CND and (e) N-CND 1 under UV-light (312 nm). A comparison between N-CND 1 emission in solution (C) and as dried powder (D) under white light (I; III) and under 312 nm UV-light (II; IV), respectively.