Synthesis of dendronized poly(methacrylates) and their diblock copolymers by atom transfer radical polymerization

Two kinds of dendronized polymers [poly((4‐3,4,5)‐12G1‐CH2MA) and poly(G2‐CH2MA)] were synthesized successfully by atom transfer radical polymerization (ATRP). The polymerization carried out with CuBr/N,N,N′,N′,N′‐pentamethyldiethylenetriamine (PMDETA) as catalyst/ligand system led to the polymers with narrow polydispersity (1.14 < Mw/Mn < 1.35). The dendronized polymers obtained with retained reactivity at chain end were further utilized as macroinitiators to the chain extensive reaction of a second monomer (St) by ATRP, which resulted in the formation of a new type of linear–dendritic diblock copolymers. In addition, the polymers and their diblock copolymers were characterized by GPC and DSC.