Dendronized Polymer Organogels from Click Chemistry:A Remarkable Gelation Property Owing to Synergistic Functional-Group Binding and Dendritic Size Effects

摘要

The use of 1,3-dipolar cycloaddition reactions between azides and alkynes(click chemistry)has been extremely successful as a versatile synthetic tool to construct novel polymeric systems.Whereas the main thrust has been focused on building up highly elaborate polymeric architectures,such as block copolymers,star polymers,dendrimers,and hyper-branched polymers,it is also noted that the physical properties of such poly(triazole)-based materials are little studied.Additionally,although there are many examples of the synthesis of dendrimers using click chemistry,only a few concern the preparation of dendronized polymers.These are polymers incorporating multiple dendron segments stemming from a linear polymer backbone and are commonly prepared by graft-to,graft-from,or macromonomer polymerization approaches.