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Photoresponsive azopolyester-PMMA block copolymers obtained by combination of ATRP, polycondensation, and >click> chemistry

AutorBerges, Cristina; Sánchez-Somolinos, Carlos; Alcalá, Rafael
Fecha de publicación2012
EditorWiley-VCH
CitaciónMacromolecular Chemistry and Physics 213(21): 2299-2310 (2012)
ResumenNovel 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. Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
URIhttp://hdl.handle.net/10261/73982
DOI10.1002/macp.201200414
Identificadoresdoi: 10.1002/macp.201200414
issn: 1022-1352
e-issn: 1521-3935
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