Dominic V Mcgrath
Publications
Abstract:
Azobenzene-containing amphiphilic dendrimer was used to fabricate a photosensitive monolayer. A crown-ether moiety served as a polar head and a polyether fragment with long-chain alkyl tails providing hydrophobicity for an overall amphiphilic character. The architecture exhibited two dissimilar bulky terminal fragments.
Abstract:
The polarity of the open form of spiropyrans is suitable for use as surfactants and for controlling the hydrophilicity of the dendrimer surface with the use of light. Spiropyrans as a peripheral unit of dendrimer with a non-polar inner core will lead to the formation of macromolecules with photolytically-controlled amphiphilic character. In this connection, spiropyran subunits were introduced on the surface of dendrimers prepared using the convergent synthetic strategy to modify the dendrimers' properties.
Abstract:
Thermally labile dendronized AA-BB step polymers are described. First through third generation dendritic bisfuran monomers 6a-6c were prepared in part by the Cu(I)-catalyzed azide-alkyne Huisgen 1,3-dipolar cycloaddition reaction and in turn polymerized by the reversible furan-maleimide Diels-Alder reaction, The Diels-Alder reaction conditions were optimized through end-capping studies with N-phenylmaleimide (7). Dendronized step polymers 10a-10c were then formed from reaction with bismaleimide 9 and their assembly, disassembly, and reassembly behavior studied by GPC. © 2009 American Chemical Society.
Abstract:
An approach to dendrimers with highly functional interiors constructed from chiral, non-racemic hydrobenzoin monomer units is presented. An optically pure monomer unit is prepared using asymmetric dihydroxylation (AD) and a representative dendrimer is constructed by a convergent growth strategy.