Enhancing circularly polarised luminescence by extending the π-conjugation of axially chiral compounds.
Circularly polarised luminescence (CPL) and photoluminescence (PL) properties of π-conjugated (R)- and (S)-2,2'-diphenyl-4-biphenanthrol (VAPOL) exhibited an efficient CPL (∼1.3 × 10(-3)) with a quantum yield (ΦF) of 0.20 at 376 nm. By comparison, (R)- and (S)-3,3-diphenyl-2,2-bi-1-naphthol (VANOL) exhibited no CPL or PL.
Department of Applied Chemistry, Faculty of Science and Engineering, Kinki University, 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan. y-imai@apch.kindai.ac.jp.
Yoko
Y
Kitayama
Tomoyuki
T
Amako
Nozomu
N
Suzuki
Michiya
M
Fujiki
Yoshitane
Y
Imai