N
H
O
O
n = 1
n = 2
pyr-5
pyr-6
Imai 2015
O
H
2 N
H
N
O
NH
2
O
6
6
n
n = 3
n = 4
pyr-7
pyr-8
N
H
O
O
n = 1
n = 2
pyr-9
pyr-10
Imai 2016
O
H
2 N
O
NH
2
O
6
6
n = 3
n = 4
pyr-11
pyr-12
H
N
N
H
O
H
N
O
n
n = 5
n = 6
pyr-13
pyr-14
n = 7
n = 8
pyr-15
pyr-16
pyr-9
pyr-1 0
pyr-14
pyr-15
20
40
30
20
10
0
–10
–20
–30
30
20
10
0
–10
–20
–30
1.0
0.5
0.0
1.0
0.5
0.0
1.0
0.5
0.0
1.0
0.5
0.0
10
0
0
–10
–20
20
10
–10
–20
350 400 450
550
500
600
Wavelength / nm
Dl = (l L -l R ) x 10 4
l = (l L +l R )/ 2
l = (l L +l R )/ 2
l = (l L +l R )/ 2
l = (l L +l R )/ 2
Dl = (l L -l R ) x 10 4
Dl = (l L -l R ) x 10 4
Dl = (l L -l R ) x 10 4
650 700
350 400 450
550
500
600
Wavelength / nm
650 700
350 400 450
550
500
600
Wavelength / nm
650 700
350 400 450
550
500
600
Wavelength / nm
650 700
Fig. 12.3
Top: structures of pyrene-decorated polypeptides developed by Imai’s group. Bottom: selected examples of CPL and
fluorescence (D-isomers in
black, L-isomers in gray) measured in CHCl
3 (10
À4
M). Adapted with permission from reference [16]
12 Circularly Polarized Luminescence from Intramolecular Excimers
279