Fig. 3: CPL properties at different conditions.

a CPL spectra and b the gem values of chiral co-assembly R/S-M-(PyBO)4 prepared by spin-coating in toluene solutions at different concentrations; c CPL spectra and d the gem values of R/S-M-(PyBO)4 vs time (h) in air (the spectra were obtained by superimposing the front and back tests, λex = 330 nm).