142 Advances in Polymer Science Editorial Board: A. Abe. A.-C ...

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Dendrimers and Dendrimer-Polymer Hybrids Jacques Roovers 1 , Bogdan Comanita Institute for Chemical Process and Environmental Technology, National Research Council, Ottawa, Ontario CANADA, K1A 0R6; 1 e-mail: jacques.roovers@nrc.ca Abstract. The synthesis and study of dendrimers has been truly dramatic in the last ten years. This review gives a brief introduction to some of the key concepts and main synthetic strategies in dendrimer chemistry. The focus of the chapter is a survey of modern analytical techniques and physical characterization of dendrimers. Results of model calculations and experiments probing the dimensions and conformation of dendrimers are reviewed. In the final sections the experimental work on dendrimer-polymer hybrids is highlighted. The dense spherical conformation of dendrimers has been combined with the loose randomcoil conformation of ordinary polymers to form new hybrids with potentially interesting new properties. Keywords. Dendrimer, Dendrimer-polymer hybrid, Conformation, Branched polymers List of Abbreviations and Symbols . . . . . . . . . . . . . . . . . . . . . . . 180 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181 1.1 Dendritic Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . 181 1.2 Synthetic Highlights . . . . . . . . . . . . . . . . . . . . . . . . . . . 182 2 Analysis of Dendrimers . . . . . . . . . . . . . . . . . . . . . . . . . 187 2.1 NMR Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187 2.2 Mass Spectrometry . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187 2.3 Size Exclusion Chromatography . . . . . . . . . . . . . . . . . . . . 193 3 Conformation of Dendrimers . . . . . . . . . . . . . . . . . . . . . 194 3.1 Theoretical Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194 3.2 Experimental Dimensions of Dendrimers . . . . . . . . . . . . . . . 195 3.2.1 Radius of Gyration . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195 3.2.2 Hydrodynamic Radii . . . . . . . . . . . . . . . . . . . . . . . . . . . 197 3.2.3 Effect of Solvent on Dendrimer Dimensions . . . . . . . . . . . . . 199 4 Dendrimer-Polymer Hybrids . . . . . . . . . . . . . . . . . . . . . . 200 4.1 Polymeric Dendrimers . . . . . . . . . . . . . . . . . . . . . . . . . . 200 4.2 Dendrimers on Polymers . . . . . . . . . . . . . . . . . . . . . . . . 206 Advances in Polymer Science, Vol.142 © Springer-Verlag Berlin Heidelberg 1999
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Branched Polymers I Volume Editor:
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Volume Editor Dr. Jacques Roovers I
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Preface While books have been writt
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Contents Synthesis of Branched Poly
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Synthesis of Branched Polymers by C
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Author Index Volumes 101-142 Author
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Author IndexVolumes 101-142 231 Dun
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Subject Index Addition-fragmentatio
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Subject Index 241 Microphases 11z,
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