Fig. 3: HTP properties of the control doped system.
From: Twofold rigidity activates ultralong organic high-temperature phosphorescence

a Molecular configuration exhibited by single-crystal control guests BCZ–Me, BCZ–nBu, BCZ–Ph, and BCZ–TPA (the molecular configuration of BCZ–Be was simulated through theoretical calculations). b Kinetic attenuation curves of six guests at 77 K (Tetrahydrofuran as solvent, 1.0 × 10−5 mol/L). c Relative changes in fluorescence intensity of six guests at various temperatures (DMSO as solvent, 1.0 × 10−5 mol/L). d Relative changes in phosphorescence intensity of six doped materials at various temperatures (Excitation wavelength: 380 nm; delayed time: 1 ms). e Phosphorescence lifetime of six doped materials at various temperatures. f Afterglow images of six doped materials at various temperatures.