4.1 Nanoscience
165
N
N
OMe
N
N
N
N
MeO
OMe
OMe
OMe
N
N
N
N
N
N
OMe
OMe
MeO
OMe
OMe
OMe
OMe
•+
•+
•+
•+
•+
•+
Fig. 4.15 Generation of stable septet spin radicals in terms of the combination of meta and para
(m, p) PD linkages. The para motifs are indicated by red
Super-degenerated band
Valence band
Conduction
band
Fig. 4.16 Several degenerated or pseudo-degenerated NBMO’s resulting in parallel spins based
on the Hund’s rule (left). This concept could be extended to polymers to possibly make a superdegenerated band supplying parallel spins (right)
(a)
(b)
Polymer 1
Polymer 2
Fig. 4.17 Two kinds of unit cells enclosed by broken lines for molecular design toward 2D highspin polymers a 1 and b 2. Reprinted from Ito et at. 2009, Copyright 2009, with permission from
Elsevier
165
N
N
OMe
N
N
N
N
MeO
OMe
OMe
OMe
N
N
N
N
N
N
OMe
OMe
MeO
OMe
OMe
OMe
OMe
•+
•+
•+
•+
•+
•+
Fig. 4.15 Generation of stable septet spin radicals in terms of the combination of meta and para
(m, p) PD linkages. The para motifs are indicated by red
Super-degenerated band
Valence band
Conduction
band
Fig. 4.16 Several degenerated or pseudo-degenerated NBMO’s resulting in parallel spins based
on the Hund’s rule (left). This concept could be extended to polymers to possibly make a superdegenerated band supplying parallel spins (right)
(a)
(b)
Polymer 1
Polymer 2
Fig. 4.17 Two kinds of unit cells enclosed by broken lines for molecular design toward 2D highspin polymers a 1 and b 2. Reprinted from Ito et at. 2009, Copyright 2009, with permission from
Elsevier