Side-chain clickable polymers

Thus far, our focus has been on polymers that are prepared via the CuAAC reaction or those that bear clickable units primarily at the chain ends in this section, we focus on another important application of CuAAC reaction, namely side-chain clickable polymers. These are polymers that bear either pendant propargyl or azide groups and can be clicked, post-polymerization, to access a wide variety of polymeric structures one example that was earlier described was the dendronized 

Cross-linked polymers are systems where individual polymer chains are covalently linked to form a network structure such polymeric systems would not dissolve in any solvent but would swell to generate gels. The extent of swelling 

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The employment of click chemistry reactions in macromolecular science has allowed the rapid synthesis of a large array of polymers [42-51]. Indeed, the presence of clickable groups along the backbone, in the side chains, or at chain termini can be exploited for post-polymerization modifications (i.e., functionalization) leading to polymers bearing functionalities incompatible with the polymerization conditions [42]. 

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