Počet záznamů: 1
Solvent-control over monomer distribution in the copolymerization of 2-oxazolines and the effect of a gradient structure on self-assembly
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SYSNO ASEP 0508824 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Solvent-control over monomer distribution in the copolymerization of 2-oxazolines and the effect of a gradient structure on self-assembly Tvůrce(i) Bera, D. (BE)
Sedlacek, O. (BE)
Jäger, Eliezer (UMCH-V) ORCID, RID
Pavlova, Ewa (UMCH-V) RID
Vergaelen, M. (BE)
Hoogenboom, R. (BE)Zdroj.dok. Polymer Chemistry . - : Royal Society of Chemistry - ISSN 1759-9954
Roč. 10, č. 37 (2019), s. 5116-5123Poč.str. 8 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova gradient copolymers ; poly(2-oxazoline)s ; solvent-controlled monomer distribution Vědní obor RIV CD - Makromolekulární chemie Obor OECD Polymer science CEP GA17-09998S GA ČR - Grantová agentura ČR TN01000008 GA TA ČR - Technologická agentura ČR Způsob publikování Omezený přístup Institucionální podpora UMCH-V - RVO:61389013 UT WOS 000487564000008 EID SCOPUS 85072656412 DOI 10.1039/C9PY00927B Anotace ne-pot synthesis of gradient copolymers by statistical copolymerization represents an elegant route to amphiphilic copolymers as a basis for micellar systems. Herein, we propose a robust strategy to control the monomer distribution along the gradient copolymer chain by appropriate selection of the polymerization solvent. The gradient formation was investigated for copolymerizations of the hydrophilic 2-methyl-2-oxazoline (MeOx) and the hydrophobic 2-phenyl-2-oxazoline (PhOx) using sulfolane and acetonitrile as the polymerization solvents revealing a striking difference. In sulfolane, a quasi-block (CP2) like character was observed, whereas acetonitrile led to a more gradient-like (CP3) copolymer. The monomer distribution was found to have an impact on the micellization behavior of both amphiphilic copolymers, which was also compared with the analogous block copolymer (CP1). CP1 led to the formation of the smallest micelles, followed by a somewhat larger structure formed by CP2, while CP3 self-assembles into significantly larger nanoparticles. These findings open up a route to new amphiphilic copolymer systems with precisely fine-tuned architecture. Pracoviště Ústav makromolekulární chemie Kontakt Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Rok sběru 2020 Elektronická adresa https://pubs.rsc.org/en/content/articlelanding/2019/PY/C9PY00927B#!divAbstract
Počet záznamů: 1