Fig. 4: The photophysical properties investigation of colorful organic afterglow under ambient conditions. | Nature Communications

Fig. 4: The photophysical properties investigation of colorful organic afterglow under ambient conditions.

From: Phosphine-mediated hydrogen bond and phosphorescence energy transfer for tunable chiroptical afterglow in stacked polymers

Fig. 4: The photophysical properties investigation of colorful organic afterglow under ambient conditions.

a Mechanism demonstration for multicolor emission based on Förster resonance energy transfer. b Delayed PL spectrum of 0.5 wt.% 2PACz@PVA film and absorption spectra of fluorescein sodium (Fluc), rhodamine 123 (Rh123), and rhodamine 6G (Rh6G) in aqueous solution (~10−5 mol L−1). SSPL (c) and delayed PL (d) spectra of 0.15 wt.% Fluc, 0.25 wt.% Rh123 and 0.15 wt.% Rh6G doped 0.5 wt.% 2PACz@PVA films, respectively. e Commission Internationale de l’Eclairage 1931 coordinates of afterglow emission of 0.15 wt.% Fluc@2PACz@PVA, 0.25 wt.% Rh123@2PACz@PVA and 0.15 wt.% Rh6G@2PACz@PVA films. f Afterglow decay profiles of emission bands at 444 nm (top panel) and 538 nm (bottom panel) of 0.15 wt.% Fluc@2PACz@PVA film. g Afterglow decay profiles of emission bands at 444 nm (top panel) and 565 nm (bottom panel) of 0.25 wt.% Rh123@2PACz@PVA film. h Afterglow decay profiles of emission bands at 444 nm (top panel) and 600 nm (bottom panel) of 0.15 wt.% Rh6G@2PACz@PVA film.

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