Br
OTf
Br
Br
OTf
abs,max = 361 nm
= 0.68 x 10 5 M –1 cm –1
PL,max = 427 nm
PL = 0.75
|g lum | = 1.7 x 10 –3
abs,max = 357 nm
= 0.56 x 10 5 M –1 cm –1
PL,max = 424 nm
PL = 0.73
|g lum | = 1.7 x 10 –3
Pd 2 (dba) 3
P t Bu 3
CuI
in THF, NEt 3
TMS
TMS
TMS
MeO
MeO
OMe
MeO
MeO
OMe
OMe
(R p )-15
(R p )-16
TMS
λ
λ
Φ
λ
λ
Φ
Fig. 3.18 Structures and optical data of X-shaped molecules 15 and 16 in which different
π-electron systems are stacked
Wavelength / nm
350
400
450
500
550
600
IL–IR /
a.u.
Intensity
/ a.u.
CPL
PL
(Rp,Rp)-17
(Sp,Sp)-17
OTf
OTf
TMS
TMS
TMS
OMe
OMe
MeO
MeO
(R p ,R p )-17
OTf
OTf
Br
Br
Pd 2 (dba) 3
P t Bu 3
CuI
in THF, NEt 3
abs,max = 379 nm
= 1.3 x 10 5 M –1 cm –1
PL,max = 419 nm
PL = 0.62
|g lum | = 1.6 x 10 –3
D
λ
λ
Φ
Fig. 3.19 One-handed double helical molecule 17 and the CPL and PL spectra in CHCl 3
(10 Â 10
–5
M)
3 Circularly Polarized Luminescence from Planar Chiral Compounds Based on. . .
47