Fig. 3: Photophysical properties of the SPC^S _MC film.

a Schematic illustration of the fabrication processes of SPC^S _MC. b Photographs of different stages under natural light (NL) and 365 nm (UV) light. c Corresponding images of (b) when the L-CPF and R-CPF were placed on top of the sample. d Normalized absorption and fluorescence of SPC^S _SP and SPC^S _MC films; the inset shows switching between the SP and MC isomers. e CPL spectra of SPC^S _MC and SPC^R _MC films excited at 360 nm. f The g_lum value in the SPC^S film sample was monitored at 670 nm during cyclic immersion into and removal of MC molecules, and the inset shows related images in natural light (left) and UV light (right). Schematic representation of experimental setup for fluorescence and CPL spectra is shown in Supplementary Fig. 12.