Advances in Dendritic Macromolecules. Volume 3 by G.R. Newkome

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 according 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 position as photochemical molecular units working by way of photoinduced strength and electron move strategies. bankruptcy four, stories the final development on redox-active dendrimers, specifically as redox catalysts, natural conductors, transformed electrodes, and versions for electron move proteins. bankruptcy five, summarizes the pioneering learn in organometallic dendritic macromolecules after which delineates the redox homes of a chain of silicon-based ferrocenyl-containing dendrimers.

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Fast curing films with no detectable residual unsaturation left were produced. The viscosity of the resin and the glass transition temperature of the cured films were found to be strongly dependent on the nature of the end groups. With more polar end groups, higher viscosity and glass transition temperatures, respectively, are realized. The manifold of end groups also gave extraordinary possibilities to tailor polymers for certain applications. By varying the nature of end groups, very different polymers can be obtained with the same backbone.

24. Chu, E; Hawker, C. J. Polym. Bull 1993,30, 265. 25. (a) Tlimer, S. ; Voit, B. ; Mourey, T. H. Macromolecules 1993, 26, 4617; (b) Turner, S. ; Walter, E; Voit, B. ; Mourey, T H. Macromolecules 1994,27,1611; (c) Kricheldorf, H. ; Stober, O. Macromol Rapid Commun. 1994,15, 87; (d) Wooley, K. ; Hawker, C. ; Fr^chet, J. M. J. Polym. J. 1994,26,187; (e) Feast, W. ; Stainton, N. M. J. Mater. Chem. 1995,5,405. 26. ; Hult, A. J. Polym. : Part A: Chem. Ed. ; Hult, A. Macromolecules 1995,28, 1698. 27.

High-spin dendrimers 5 (G = 1) and 6 (G = 1) are exceptional in the sense that they exist in several isolable and stable stereoisomeric forms (2 and 12 respectively) that show striking differences in their overall sizes and shapes as well as in their external surfaces. ^^ Since the structural features of the stereoisomers of 5 (G = 1) and 6 (G = 1) are well-defined for each stereoisomer and are responsible, together with their own electronic characteristics, for their different physicochemical properties, such dendrimers are ideal models for studying the influence of certain molecular structural parameters, like the surface area, volume, and fractal dimensionality in the ability of dendritic macromolecules to interact with neighboring solvent molecules.

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