The UV/vis absorption spectrum of rac-9 in toluene exhibits a broad peak at 413 nm tailing to approximately 480 nm (Fig. ). Photoexcitation afforded green emission at 515 nm with a quantum yield of 22%. The CPL spectra of the enantiomers of 9 in toluene exhibited clear CPL with a maximum |g| value of 1.0 × 10 -2 (Fig. ). Drop-cast films of the enantiomers of 9 in 3,3′-di(9H-carbazol-9-yl)-1,1′-biphenyl (mCBP) also showed clear CPL spectra with a high |g| value of 8.4 × 10 -3 (Fig. ). We then fabricated vacuum-deposited films consisting of 5 wt% 9 in mCBP (Figs. ). Photoexcitation of the obtained film resulted in emission at 517 nm with a high quantum yield of 63%.