Chemistry Reference
In-Depth Information
162
Interfaces
N
HN
NH
N
(a)
N
HN
N
HN
N
HN
CN
CN
NC
CN
NH
N
NH
N
NH
N
CN
(c)
(d)
(b)
CN
NH
N
NH
N
N
HN
NC
NH
N
N
HN
N
HN
N
HN
CN
CN
CN
NH
N
CN
CN
CN
CN
NH
N
N
HN
CN
CN
N
H
N
N HN
NC
N
H
N
CN
NC
CN
NH N
N
HN
NH
N
N
HN
CN
NH
N
NH
N
N
HN
CN
(e)
(f)
(g)
Figure 4.8. Schemes of the porphyrins discussed in the text. (a) H
2
-TBPP, which
is composed of a free-base porphyrin and four ditertiarybutylphenyl substituents.
(b) CTBPP, where a ditertiarybutylphenyl substituent of H
2
-TBPP is replaced with
a cyanophenyl substituent. (c)
cis
-BCTBPP, where two cyanophenyl groups have
been substituted at the
cis
position. (d)
trans
-BCTBPP, where two cyanophenyl
groups have been substituted at the
trans
position. (e) CTBPP trimer, (f)
cis
-
BCTBPP tetramer and (g)
trans
-BCTBPP wire.
