By G.R. Newkome
The sequence Advances in Dendritic Macromolecules goals to hide the synthesis and supramolecular chemistry of dendritic or cascade super-molecules in addition to their much less ideal hyperbranched cousins.In quantity three, bankruptcy 1 describes the synthesis and characterization of dendrimers and hyperbranched polyesters, either in response to 2,2-bis(hydroxymethyl)propionic acid, because the AB2-monomer. bankruptcy 2, discusses the benefits and disadvantages of dendritic molecular architectures essential to create polymeric natural magnetic fabrics. In bankruptcy three, Balzani and associates delineate their contributions to the sphere of polynuclear transition steel complexes within the layout and building of dendritic nanostructures; those luminesence and redox-active complexes recommend their function as photochemical molecular units working via photoinduced strength and electron move techniques. bankruptcy four, stories the general development on redox-active dendrimers, specially as redox catalysts, natural conductors, transformed electrodes, and versions for electron move proteins. bankruptcy five, summarizes the pioneering study in organometallic dendritic macromolecules after which delineates the redox houses of a sequence of silicon-based ferrocenyl-containing dendrimers.
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Extra resources for Advances in Dendritic Macromolecules. Volume 3
Summary: Hyperbranched Polyesters A versatile way of synthesizing hydroxyfunctional hyperbranched aliphatic polyesters using 2,2-bis(dimethylol)propionic acid together with a polyol core through a pseudo-step-wise procedure has been presented. The polyesters were shown to have a very high degree of branching (-80%), as determined with 22 H. IHRE, M. JOHANSSON, E. M A L M S T R O M , and A. HULT ^^C-NMR. The use of a core moiety made it possible to synthesize hyperbranched polyesters with varying size, depending on the ratio coreiABj-monomer.
McConnell, J. R. J. Org. Chem. 1987,52,5305. ; Hult, A. Presented at the 35th lUPAC International Symposium in Akron, Ohio, July 11-15, 1994. (a) Newkome, G. ; Moorefield, C. ; Baker, G. ; Johnson, A. ; Behera, R. Angew, Chem. Int. Ed. Engl. 1991,30, 1176; (b) Newkome, G. ; Moorefield, C. ; Baker, G. ; Saunders, M. ; Grossman, S. H. Angew. Chem. Int. Ed Engl. 1991,30, 1178. Miller, T. ; Bair, H. E. J. Am, Chem, Soc 1992,114, 1018. van der Made, A. ; van Leeuwen, R W. N. M. / Chem. Soc, Chem. Commun, 1992,1400.
The samples were postbaked at 100 **C for 20 minutes to obtain a similar thermal history for all samples. e. no oxygen inhibition was noticed). e. less than 5%). This showed that all acrylate groups are accessible to polymerization and not "caged" in the hyperbranched structure. 0 ^^*. 'f ^ -^H 1 1 1 J 50 100 150 Temperature (°C) Figure 13. Tan 8 as function of temperature for cross-linked films of three different acrylate resins with either hydroxyl (HI3), benzoate (HI2), or propionate (Hll) terminal groups.
Advances in Dendritic Macromolecules. Volume 3 by G.R. Newkome