Fig. 5: Exploration of multicolor COA in a double-layer stacked polymeric film. | Nature Communications

Fig. 5: Exploration of multicolor COA in a double-layer stacked polymeric film.

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

Fig. 5: Exploration of multicolor COA in a double-layer stacked polymeric film.

a The dissymmetry factor (glum) of 2PACz@PVA@D/L-PLA films with different thickness of chiral PLA film. Circularly polarized luminescence (CPL) spectra (b) and glum (c) of 2PACz@PVA@D/L-PLA films. CPL spectra and glum of 0.15 wt.% Fluc@2PACz@PVA@D/L-PLA (d), 0.25 wt.% Rh123@2PACz@PVA@D/L-PLA (e), and 0.15 wt.% Rh6G@2PACz@PVA@D/L-PLA films (f). Noted: The stacked polymeric films feature a strategically designed bilayer multicolor afterglow and chiral PLA film, where incident photons primarily interact with the multicolor afterglow film prior to penetrating chiral PLA film. The thickness of the chiral PLA layer is 6.5 μm and the doping concentration of 2PACz in PVA film is 0.5 wt.%.

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