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Fluorinated 2-alkyl-2-oxazolines of high reactivity: spacer-length-induced acceleration for cationic ring-opening polymerization as a basis for triphilic block copolymer synthesis
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SYSNO ASEP 0483138 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Fluorinated 2-alkyl-2-oxazolines of high reactivity: spacer-length-induced acceleration for cationic ring-opening polymerization as a basis for triphilic block copolymer synthesis Author(s) Kaberov, Leonid I. (UMCH-V) ORCID
Verbraeken, B. (BE)
Riabtseva, Anna (UMCH-V)
Brus, Jiří (UMCH-V) RID, ORCID
Talmon, Y. (IL)
Štěpánek, Petr (UMCH-V) RID, ORCID
Hoogenboom, R. (BE)
Filippov, Sergey K. (UMCH-V) RID, ORCID, SAISource Title ACS Macro Letters. - : American Chemical Society
Roč. 7, č. 1 (2018), s. 7-10Number of pages 4 s. Language eng - English Country US - United States Keywords poly(2-oxazoline)s ; triblock copolymers ; fluorinated Subject RIV BO - Biophysics OECD category Biophysics R&D Projects GA17-00973S GA ČR - Czech Science Foundation (CSF) Institutional support UMCH-V - RVO:61389013 UT WOS 000423016200002 EID SCOPUS 85040575229 DOI https://doi.org/10.1021/acsmacrolett.7b00954 Annotation The synthesis of defined triphilic terpolymers with hydrophilic, lyophilic, and fluorophilic blocks is an important challenge as a basis for the development of multicompartment self-assembled structures with potential for, e.g., cascade catalysis and multidrug loading. The synthesis of fluorophilic poly(2-oxazoline)s generally suffers from a very low reactivity of fluorinated 2-oxazoline monomers in cationic ring-opening polymerization (CROP). We report a systematic study on overcoming the extremely low reactivity of 2-perfluoroalkyl-2-oxazolines in CROP by the insertion of methyl and ethyl hydrocarbon spacers between the 2-oxazoline ring and the trifluoromethyl group. The kinetic studies showed the gradual increase of the rate of polymerization with increasing of the hydrocarbon spacer length. The monomer with an ethyl spacer was found to have similar reactivity as 2-alkyl-2-oxazolines and allowed the synthesis of defined triphilic triblock copolymers. Workplace Institute of Macromolecular Chemistry Contact Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Year of Publishing 2019
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