Chemistry Reference
In-Depth Information
FIGURE 1.26
AYamamoto-type poly(phenylazomethine) dendrimer series illustrating quan-
tized, sequential dendrimer shell filling with metal salts using; [G
¼
4]; {dendri-poly(pheny-
lazomethine)} (DPA) dendrimers [65]. Copyright Wiley-VCH Verlag Gmbh & Co. KGaA.
century and was initially focused on the simple combinatorial bonding of atoms to
form small molecules (i.e., monomers, branch-cell monomers), much as illustrated in
Figure 1.28. Synthetic soft matter chemistry throughout the nineteenth and twentieth
century witnessed steady progress toward more complex molecular structure and
architecture, including dendrons and dendrimers. Figure 1.28 illustrates the “aufbau
process” for the bottom-up construction of such well-defined nanoscale structures
(i.e., dendrons/dendrimers), which one might refer to as soft matter nano-
elements [3,4,66]. Essentially all other proposed hard-soft nano-element categories
FIGURE 1.27
A comparison of stepwise and random ligation processes that are observed for
PtCl
4
complexation with a rigid Yamamoto-type poly(phenylazomethine) dendrimer and a
flexible Tomalia-type poly(amidoamine) (PAMAM) dendrimer, respectively [8].
