Linear-Dendritic Alternating Copolymers.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION(2019)
Abstract
Herein, the design, synthesis, and characterization of an unprecedented copolymer consisting of alternating linear and dendritic segments is described. First, a 4th-generation Hawker-type dendron with two azide groups was synthesized, followed by a step-growth azide-alkyne "click" reaction between the 4th-generation diazido dendron and poly(ethylene glycol) diacetylene to create the target polymers. Unequal reactivity of the functional groups was observed in the step-growth polymerization. The resulting copolymers, with alternating hydrophilic linear and hydrophobic dendritic segments, can spontaneously associate into a unique type of microphase-segregated nanorods in water.
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Key words
alternating copolymers,click chemistry,linear-dendritic copolymers,nanorods,self-assembly
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