Solvent-control over monomer distribution in the copolymerization of 2-oxazolines and the effect of a gradient structure on self-assembly

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F19%3A00508824" target="_blank" >RIV/61389013:_____/19:00508824 - isvavai.cz</a>

Výsledek na webu

<a href="https://pubs.rsc.org/en/content/articlelanding/2019/PY/C9PY00927B#!divAbstract" target="_blank" >https://pubs.rsc.org/en/content/articlelanding/2019/PY/C9PY00927B#!divAbstract</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/C9PY00927B" target="_blank" >10.1039/C9PY00927B</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Solvent-control over monomer distribution in the copolymerization of 2-oxazolines and the effect of a gradient structure on self-assembly

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Solvent-control over monomer distribution in the copolymerization of 2-oxazolines and the effect of a gradient structure on self-assembly

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10404 - Polymer science

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Polymer Chemistry

ISSN

1759-9954

e-ISSN

—

Svazek periodika

10

Číslo periodika v rámci svazku

37

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

8

Strana od-do

5116-5123

Kód UT WoS článku

000487564000008

EID výsledku v databázi Scopus

2-s2.0-85072656412