Star and miktoarm star block (co)polymers via self-assembly of ATRP generated polymer segments featuring Hamilton wedge and cyanuric acid binding motifs

Ozcan Altintas, Umit Tunca, Christopher Barner-Kowollik

Research output: Contribution to journalArticlepeer-review

43 Scopus citations

Abstract

Hamilton wedge (HW) end-functionalized poly(styrene) (PS-HW, Mn = 5400 g mol-1, PDI = 1.06), HW mid-chain functionalized poly(styrene) (PS-HW-PS, Mn = 4600 g mol-1, PDI = 1.04), cyanuric acid (CA) end-functionalized poly(styrene) (PS-CA, Mn = 3700 g mol-1, PDI = 1.04) and CA end- functionalized poly(methyl methacrylate) (PMMA-CA, Mn = 8500 g mol-1, PDI = 1.13) precursors were successfully synthesized via a combination of atom transfer radical polymerization (ATRP) and copper catalyzed azide-alkyne cycloaddition (CuAAC). The precursor polymers were characterized via size exclusion chromatography (SEC) and 1H NMR with respect to both molecular weight and structure. Supramolecular homopolymer (PS-HW-PS-CA), block copolymer (PS-HWPMMA-CA), star polymer (PS-HW-PS - PS-CA) as well as miktoarm star polymer (PS-HW-PS - PMMA- CA) were formed in solution in high yields at ambient temperature (association close to 89% for PS-HW-PS-CA, 90% for PS-HW-PS - PS-CA and 98% for PS-HW-PS - PMMA-CA) via H-bonding between the orthogonal recognition units, HW and CA. The formation of supramolecular polymers was confirmed via 1H NMR at ambient temperature in deuterated methylene chloride (CD 2Cl2) solution.

Original languageEnglish (US)
Pages (from-to)1146-1155
Number of pages10
JournalPolymer Chemistry
Volume2
Issue number5
DOIs
StatePublished - May 16 2011

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