Fig. 2: HTP properties of the doped system.
From: Twofold rigidity activates ultralong organic high-temperature phosphorescence
a Molecular structures of the guest BCZ and host PVP. b Single-crystal structure of guest BCZ. c Afterglow images of doped material BCZ/PVP at various temperatures. d Phosphorescence spectra of doped material BCZ/PVP at various temperatures (Excitation wavelength: 380 nm; Delayed time: 1 ms). e Kinetic attenuation curves of doped material BCZ/PVP at various temperatures (Excitation wavelength: 380 nm). f Phosphorescence lifetime and afterglow time of doped material BCZ/PVP at various temperatures (Excitation wavelength: 380 nm, orange: phosphorescence lifetime, green: afterglow time).
