Figure 3: Photophysical and thermal characterization of Br6A- and DA1-doped polymer blend films. | Nature Communications

Figure 3: Photophysical and thermal characterization of Br6A- and DA1-doped polymer blend films.

From: Suppressing molecular motions for enhanced room-temperature phosphorescence of metal-free organic materials

Figure 3

(a) Ultraviolet–visible absorption spectra of DA1-doped PFMA (1.2 wt% of DA1 for PFMA polymer) films before (black line) and after (red line) thermal annealing. Blue line shows the expected absorption spectrum of DA1-doped PFMA. (b) Differential scanning calorimetry (DSC) curves of Br6A- and DA1-doped PFMA (blue and red line, respectively) and PFMA (black line). (c) Gated PL spectra of Br6A- and DA1-doped PFMA at RT. (d) Phosphorescence quantum yield (ΦP) of Br6A- (blue line), DA1-doped (red line), Br6A and M2-doped (black line) P(FMA-r-MMA) at different χMMA. Chemical structures of P(FMA-r-MMA) and M2 are given in inset. (e) Phosphorescence lifetime (τP) and (f) glass transition temperature (Tg) of Br6A- (blue line) and DA1-doped (red line) P(FMA-r-MMA) at different χMMA.

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