[...]... 405 407 15.5.1 Hyperbranched Polymers as Supports for Ligand Presentation 407 15.5.2 Other Applications 409 15.6 Conclusions 15.7 References 410 411 16 Applications of Hyperbranched Polymers in Coatings, as Additives, and in Nanotechnology 415 16.1 Introduction 415 16.2 Hyperbranched Polymers in Coating and Resin Applications 16.2.1 16.2.2 16.2.3 Hyperbranched Application Hyperbranched Hyperbranched... obtained from relevant review papers and books This book will focus on synthesis, characterization, properties, and applications of HPs 1.4 HYPERBRANCHED POLYMERS 1.4.1 Concept and History It is known that the DuPont researchers, Kim and Webster, coined the term hyperbranched polymers to define dendritic macromolecules that have a random branch-on-branch topology prepared by single-step polycondensation... prepared in demanding multistep syntheses in a classic organic approach In pronounced contrast, the randomly cascade-branched hyperbranched polymers are obtained in a typical polymer approach at the expense of polydispersity with regard to both molecular weight and branching structure Because of to their unusual structures, specific properties, and potential applications, hyperbranched polymers have... more efficient transfer, dissipation, and distribution of energy and/ or matter 1.2 POLYMER ARCHITECTURE The past century has witnessed pioneering work and blossoming of polymer science and industry, for which various star scientists like Staudinger, Flory, Hyperbranched Polymers: Synthesis, Properties, and Applications, by Deyue Yan, Chao Gao, and Holger Frey Copyright © 2011 John Wiley & Sons, Inc 1 2... cross-linked, and chain-branched polymers that have been widely studied and industrially used.4 Up to now, eight subclasses of dendritic polymers have been developed: (i) dendrons and dendrimers, (ii) linear-dendritic hybrids, (iii) dendronized polymers, (iv) dendrigrafts or dendrimer-like star macromolecules (DendriMacro), (v) hyperbranched polymers (HPs), (vi) hyperbranched polymer brushes (HPBs), (vii) hyperbranched. .. 1.0, and the latter four exhibit a random and irregular branched configuration with lesser DB (normally, 0.4–0.6).5 Dendrimers and HPs have been extensively studied as the representative regular and irregular dendritic polymers, respectively Dendrons and dendrimers can be synthesized by divergent and convergent methodologies (Figure 1.4).4,6 Generally, step-by-step synthesis, purification, protection, and. .. 16.3 Hyperbranched Polymers as Additives 16.3.1 16.3.2 16.3.3 Additives for Linear Thermoplastics Printing Systems 425 Stabilizers 425 423 423 16.4 Applications of Hyperbranched Polymers in Nanotechnology 16.4.1 16.4.2 416 Nanocomposites and Nanohybrids Nanoporous Materials 430 16.5 Applications in Thin Films and Sensorics 16.6 References 434 426 426 431 17 Conclusions and Perspective: Toward Hyperbranched/ Dendritic... ((PSn )PS)m Hyperbranched Macromonomers and Graft Copolymers 243 Related Procedures 8.3.3.1 8.3.3.2 8.4 Conclusions 8.5 References 243 Sequential Macromonomer Formation and Polymerization 243 Hyperbranched Polymers by a Convergent Radical Polymerization 246 247 247 9 Hyperbranched and Dendritic Polyolefins Prepared by Transition Metal Catalyzed Polymerization 251 9.1 Introduction 251 9.2 Results and Discussion... Hyperbranched and Globular Dendrimer-Like Ethylene Homopolymers 258 9.2.3.2.2 Functional Hyperbranched and Dendritic Polyolefins 263 9.2.3.2.3 Core–Shell Dendritic Polyolefin Soft Nanoparticles 263 9.2.3.3 Hyperbranched Oligomers by Transition Metal Catalysts 265 9.3 Summary and Perspective 9.4 References 269 266 10 Hyperbranched π-Conjugated Polymers 10.1 10.2 10.3 10.4 Introduction 273 Scope 274 Hyperbranched. .. Biological and Medical Applications of Hyperbranched Polymers 15.1 15.2 369 387 Introduction 387 Gene Delivery 388 15.2.1 Linear and Hyperbranched Poly(ethyleneimine) as Nonviral Gene Vectors 388 15.2.2 Modification of Poly(ethyleneimine) and Use of Adjuvant Polyglycerol 390 15.2.3 Hyperbranched Alternatives for Poly(ethyleneimine) as Gene Vectors 393 15.3 Drug Delivery 15.3.1 15.3.2 15.4 Drug Encapsulation and .