Fig. 5: Mechanism of CBs/HA–BrBP phosphorescence.

a Structure of CB[8]/BrBP–NH2 assembly as optimized by density functional theory calculations and b proposed mechanism of the long-lived RTP exhibited by this assembly.

a Structure of CB[8]/BrBP–NH2 assembly as optimized by density functional theory calculations and b proposed mechanism of the long-lived RTP exhibited by this assembly.