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- Title
Photoresponsive Azopolyester-PMMA Block Copolymers Obtained by Combination of ATRP, Polycondensation, and 'Click' Chemistry.
- Authors
Berges, Cristina; Javakhishvili, Irakli; Hvilsted, Søren; Sánchez, Carlos; Alcalá, Rafael
- Abstract
Novel azobenzene-containing block copolymers (BCs) with a polyester block bearing azobenzene moieties in the side chain and a poly (methyl methacrylate) (PMMA) block have been synthesized by the combination of atom transfer radical polymerization (ATRP), polycondensation, and 'click' chemistry. Two azide-terminated polyesters with different molecular weight (obtained by polycondensation) were coupled to an alkyne-functionalized PMMA (obtained by ATRP). Blends of the BC with the highest azo content (wt%) and an azopolyester homopolymer were also prepared. All these compounds were investigated by polarized light optical microscopy (POM), differential scanning calorimetry (DSC), and transmission electron microscopy (TEM). Polarized light-induced anisotropy was studied by birefringence and dichroism measurements.
- Publication
Macromolecular Chemistry & Physics, 2012, Vol 213, Issue 21, p2299
- ISSN
1022-1352
- Publication type
Article
- DOI
10.1002/macp.201200414