Fig. 3: The mechanism for ultralong phosphorescence of DPP-BOH-PVA film. | Nature Communications

Fig. 3: The mechanism for ultralong phosphorescence of DPP-BOH-PVA film.

From: Completely aqueous processable stimulus responsive organic room temperature phosphorescence materials with tunable afterglow color

Fig. 3

a The absorption spectra of DPP-BOH-PVA film and DPP-BOH-PVA-C film, and the chemical structure of DPP-BOH-PVA. b Three repeated cycles for the Fourier transform infrared (FTIR) spectra of DPP-BOH-PVA film under of the heating/water stimuli. c The Jablonski diagram and theoretical calculations about natural transition orbitals (NTOs) for DPP-BOH (HLCT = hybridized local and charge transfer, LE = locally excited, IC  = internal conversion, kisc = rate constant of intersystem crossing, kp,r = radiative rate constant of phosphorescence, Φp = phosphorescence quantum yield, τp = phosphorescence lifetime).

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