Fig. 2: Precursor-dependent emission.

a Example of the direct synthesis of chiral CPDs from chiral diamine precursors. b Reaction of EDA with CA and TA to form CA-EDA CPDs and TA-EDA CPDs. c Precursor-dependent RTP property (top) and schematic representation of crosslinking sites (bottom) present in PAA-EDA, PAA-EA, and PAA-EG CPDs. d Preparation of RGB PL CPDs from three different phenylenediamine isomers. Reprinted with permission from the literature reports^13,44,51,52. Copyright 2019 Nature Publishing Group, 2018 American Chemical Society, 2018 Wiley–VCH, 2015 Wiley–VCH.