(770)-dendrons (i.e., 1.73 Â 10
6 g/mol) has been reported [151]. This giant supramolecular dendrimer completes a continuum that has been defined between small
filled and large hollow dendrimers, all of which appear to be defined by the primary
structure of the precursor dendrons.
6.4.3 Dendrimer (G) -(Dendrimer (G) ) n [S-1 (G) :(S-1 (G) ) n ] Core–Shell-Type
Nanocompounds
Covalent, saturated-shell, nanocompounds (Fig. 26) can be prepared by a two-step
approach involving, firstly, self-assembly of an excess of carboxylic acidterminated dendrimers (i.e., shell reagent) around a limited amount of amineterminated dendrimer (i.e., core reagent) in the presence of LiCl to form a
Fig. 25 Self-assembly of Percec-type amphiphilic dendrons (i.e., [S-1]-type nano-elements) into
spherical supramolecular dendrimers (i.e., [S-1] n , where n ¼ discrete, stoichiometric aggregation
number that ranges between 72 and 155 for various [S-1] n -type stoichiometric nanocompounds
and nano-assemblies) [170]. Copyright: 2008 American Chemical Society
Fig. 26 The saturated-shell architecture approach to covalent megamer synthesis. All surface
dendrimers are terminated with carboxylic acid [165]
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D.A. Tomalia
6 g/mol) has been reported [151]. This giant supramolecular dendrimer completes a continuum that has been defined between small
filled and large hollow dendrimers, all of which appear to be defined by the primary
structure of the precursor dendrons.
6.4.3 Dendrimer (G) -(Dendrimer (G) ) n [S-1 (G) :(S-1 (G) ) n ] Core–Shell-Type
Nanocompounds
Covalent, saturated-shell, nanocompounds (Fig. 26) can be prepared by a two-step
approach involving, firstly, self-assembly of an excess of carboxylic acidterminated dendrimers (i.e., shell reagent) around a limited amount of amineterminated dendrimer (i.e., core reagent) in the presence of LiCl to form a
Fig. 25 Self-assembly of Percec-type amphiphilic dendrons (i.e., [S-1]-type nano-elements) into
spherical supramolecular dendrimers (i.e., [S-1] n , where n ¼ discrete, stoichiometric aggregation
number that ranges between 72 and 155 for various [S-1] n -type stoichiometric nanocompounds
and nano-assemblies) [170]. Copyright: 2008 American Chemical Society
Fig. 26 The saturated-shell architecture approach to covalent megamer synthesis. All surface
dendrimers are terminated with carboxylic acid [165]
366
D.A. Tomalia