Fig. 1: Molecular design of single-component color-tunable CPOA.
From: Single-component color-tunable circularly polarized organic afterglow through chiral clusterization
a Proposed mechanism of color-tunable phosphorescence emission from different cluster sizes showing tunable excited energy levels. b Top and lateral views of molecular packing in the chiral cluster crystal. The dotted arrows represent intra/intermolecular interactions. The blue ball and the hexagons with different background colors ranging from blue to orange represent size-dependent CTE centers showing color-tunable CPOA. c, d Proposed mechanism (c) and molecular design (d) of color-tunable CPOA from a single-component chiral cluster crystal. So is the ground state. S1 and T1 represent the lowest singlet and triplet excited states. T1*’, T1*”, and T1*”’ are the stabilized triplet excited states originated from varied emission species showing different cluster sizes, respectively.
