Fig. 7: Photophysical properties of chiral compounds 17 and 18.

a Structures of 17 and 18. b Fluorescence images of 17 and 18 in DCM (λex = 365 nm). c Absorption and fluorescence spectra of 17 and 18 in CH2Cl2 (1.0 × 10−6 M), λex = 363 nm (for 17), λex = 345 nm (for 18). d CD spectra of M-17 and P-17 in CH2Cl2 (1.0 × 10−5 M). e CD spectra of M,M-18 and P,P-18 in CH2Cl2 (1.0 × 10−5 M). f CPL spectra of M-17, P-17, M,M-18 and P,P-18 in CH2Cl2 (1.0 × 10−4 M). g glum values-wavelength curve of M-17, P-17, M,M-18 and P,P-18.