Chemistry Reference
In-Depth Information
FIGURE 5.5
Traces of size exclusion chromatography for the dendrimers
TPM-leG1-7
.
SCHEME 5.8
Graphene molecules
C96
and
C222
.
leading to planar extended disk-like molecules with 16 and 36 benzene rings
(Scheme 5.8), to
[47], respectively. These graphene molecules
have been reviewed many times and will not be further discussed here [48].
C96
[46] and
C222
5.4 POLYPHENYLENE DENDRIMERS
WITH FUNCTIONAL CORES
It should be noted that essentially any functional group, which can withstand the
Diels-Alder cycloaddition conditions (high temperatures up to 170
C) and can be
substituted with ethynyl units may be used as a core for a polyphenylene dendrimer
growth. So far we demonstrated that a wide variety of hydrocarbons can be used as
cores for dendrimers; however, their molecular geometry only influenced the overall
shape and rigidity of the resulting dendrimers [49]. Another core function could be a
carrier of a special optical or electronic property, where in such a dendrimer the
dendrons act as a shield, protecting the core from interacting with other cores or with
