Fig. 2: Photophysical properties of CzA in PVA film and dilute solution. | Nature Communications

Fig. 2: Photophysical properties of CzA in PVA film and dilute solution.

From: Ultralong organic phosphorescence from isolated molecules with repulsive interactions for multifunctional applications

Fig. 2

a Normalized steady-state photoluminescence (dash line) and phosphorescence spectra (solid lines) of CzA in PVA film under ambient conditions (top) and in m-THF solution (1 × 10−5 M) at 77 K (bottom). Inset: the left is photographs taken under 302 nm excitation, while the right is photographs of UOP after the removal of ultraviolet source. b Excitation-phosphorescence mapping of the CzA/PVA film under ambient conditions. c The CIE coordinates diagram for UOP of CzA/PVA film excited by UV light from 260 to 360 nm. The phosphorescence lifetimes d and efficiencies e of CzA/PVA films at various concentrations. f Phosphorescence spectra of CzA/PVA film (1.0 wt%) in vacuum and after exposed to oxygen for 30 min. g Phosphorescence spectra of CzA/PVA film (1.0 wt%) before and after heat treatment (333 K) in oxygen for 90 s.

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