1 Polymethine Dyes
11
Monomer
Dimer
G
E
E'
E''
Blue-Shift
Monomer
Dimer
G
E
E'
E''
Red-Shift
Parallel transition dipoles
In-line transition dipoles
Oblique transition dipoles
Monomer
Dimer
G
E
E'
E''
Band-splitting
Dipole
phase
relation
Dipole
phase
relation
Dipole
phase
relation
2f
2f
r''
r'
α
θ
Fig. 1.6
Schematic explanation for absorption shift