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. 2022 Jun 23;61(31):e202203075. doi: 10.1002/anie.202203075

Figure 5.

Figure 5

Time‐resolved CPL spectroscopy with picosecond time resolution for F8BT:(+)‐2, F8BT:(−)‐2 and F8BT thin films using a bandpass filter at 530 nm. a) Transient photoluminescence intensity I L at left circular polarization for the F8BT:(+)‐2 film (open blue circles) and laser scattering signal I L obtained from a colloidal SiO2 nanoparticle suspension (solid black circles) providing the instrument response function of the setup. b) Same as in panel a, but showing the photoluminescence intensities I R for right circular polarization. c) and d) Same as in panels a and b, but for the F8BT:(−)‐2 thin film and the same nanoparticle suspension. e) Resulting transient CPL signal I L‐I R for the F8BT:(+)‐2 thin film (blue circles) and the F8BT:(−)‐2 thin film (red circles). Also shown is the transient CPL signal of an achiral F8BT thin film (without chiral additive, violet circles). f) Resulting time resolved g lum signal for the F8BT:(+)‐2 (blue circles), F8BT:(−)‐2 (red circles) and F8BT thin films (violet circles).