Chiral carbonized polymer dots simultaneously achieving solid state luminescence and circularly polarized luminescence

Circularly polarized luminescence (CPL) materials are a hot research in the field of chiral luminescent materials. Carbonized polymer dots (CPDs) have attracted more and more attention due to their tunable photo-luminescence, high photostability, low cost and excellent biocompatibility. These outstanding properties of CPDs make them have bright prospects in the field of CPL. However, due to the aggregation-caused quenching of CPDs, it is difficult to simultaneously achieve solid state luminescence and CPL of solid CPDs itself. In this work, we have employed p-phenyldiacetonitrile and terephthalaldehyde/isophthalaldehyde as carbon source precursors, L-/D-tryptophan as chiral precursors to prepare chiral CPDs with different luminescence ,colors which can simultaneously achieve solid state luminescence and CPL of solid CPDs itself for the first time.