Fig. 3: Photophysical properties of HzTFEX2 and HzPipX2 in deaerated toluene solutions.
From: Delayed fluorescence from inverted singlet and triplet excited states
a, Steady-state absorption and PL spectra of HzTFEX2 and HzPipX2. The inset is the magnified view of the absorption spectra. b,c, Transient PL decays of HzTFEX2 (b) and HzPipX2 (c) at varying temperatures. d, Temperature dependence of Ï„DF of HzTFEX2 and HzPipX2; the solid lines in d represent the fits of Ï„DF to a single exponential in inverse temperature. e,f, Schematic diagram of the excited states and the associated transitions of HzTFEX2 (e) and HzPipX2 (f).
