10 Circularly Polarized Luminescence (CPL) Based on Planar …
361
Fig. 10.22 CPL and PL spectra of the thin film of (R p )- and (S p )-45 excited at 279 nm for CPL
and λ abs,max for PL
An optically active X-shaped molecule 46 consisting of a more extended πconjugation system was prepared from 38 as a chiral building block (Fig. 10.23)
(Gon et al. 2017). The X-shaped molecule 46 emitted CPL with Φ PL of 87% in the
dilute solution with a good |g lum | value of 1.2 × 10
−3 . In addition, this molecule
showed good film formability. The g lum value of the thin film formed by the spincoating method exhibited the positive CPL signal with the g lum value of +2.1 ×
10
−2 (Fig. 10.24), which was larger by one order of magnitude compared with that
the dilute solution. The annealed spin-coated film exhibited a negative g lum value of
Fig. 10.23 Structure of chiral X-shaped molecule (R p )-46 and the CPL profiles
361
Fig. 10.22 CPL and PL spectra of the thin film of (R p )- and (S p )-45 excited at 279 nm for CPL
and λ abs,max for PL
An optically active X-shaped molecule 46 consisting of a more extended πconjugation system was prepared from 38 as a chiral building block (Fig. 10.23)
(Gon et al. 2017). The X-shaped molecule 46 emitted CPL with Φ PL of 87% in the
dilute solution with a good |g lum | value of 1.2 × 10
−3 . In addition, this molecule
showed good film formability. The g lum value of the thin film formed by the spincoating method exhibited the positive CPL signal with the g lum value of +2.1 ×
10
−2 (Fig. 10.24), which was larger by one order of magnitude compared with that
the dilute solution. The annealed spin-coated film exhibited a negative g lum value of
Fig. 10.23 Structure of chiral X-shaped molecule (R p )-46 and the CPL profiles