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Nese Cakir, Merve Yavuzarslan, Hakan Durmaz, Gurkan Hizal and Umit Tunca Heterograft brush copolymers via romp and triple click reaction strategies involving CuAAC, diels–alder, and nitroxide radical coupling reactions Journal of Polymer Science Part A: Polymer Chemistry 51

Version of Record online: 26 NOV 2012 | DOI: 10.1002/pola.26447

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In this study, an equimolar mixture of oxanorbornenyl-anthracene (ONB-anthracene), oxanorbornenyl-bromide (ONB-Br), and oxanorbornenyl tosylate (ONB-OTs) was polymerized via ring opening metathesis polymerization using the first generation Grubbs' catalyst in CH2Cl2 at room temperature to form poly(ONB-anthracene-co-ONB-Br-co-ONB-OTs)10 copolymer as a main backbone. Next, this main backbone was sequentially clicked with a furan protected maleimide-terminated poly(methyl methacrylate) (PMMA25-MI), 2,2,6,6-tetramethyl-1-piperidinyloxy-terminated poly(ethylene glycol) (PEG11-TEMPO), and alkyne-terminated poly(ε-caprolactone) (PCL20-alkyne) via Diels-Alder, nitroxide radical coupling (NRC), and copper catalyzed azide-alkyne cycloaddition (CuAAC), respectively, to yield a poly(ONB-g-PMMA-co-ONB-g-PEG-co-ONB-g-PCL)10 heterograft brush copolymer.

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