fig5

Figure 5. Morphologies and optical properties of D-co-gel: (A) FE-SEM image; (B) PL; (C) CPL spectra with the fitting line (inset: plot of the maximum CPL emission wavelength versus the excitation wavelength) under different excitations. Reproduced with permission from Ref.^[54]. Copyright (2020) American Chemical Society. (D) Mirror image CPL spectra of three carbon dot-doped co-gels. (E) PL spectra of white-emitting co-gel (insets: a photograph of the co-gel under 365 nm (top right) and its CIE coordinate value (bottom left). (F) g_lum of white-emitting co-gel from D-GAm (black) and L-GAm. Reproduced with permission from ref.^[55]. Copyright (2021) John Wiley and Sons. PL: Photoluminescence; CPL: circularly polarized luminescence.