Stimuli responsive poly(1-[11-acryloylundecyl]-3-methyl-imidazolium bromide) : dewetting and nanoparticle condensation phenomena

A stimuli-responsive homopolymer poly(ILBr) is fabricated via a "two-phase" atom transfer radical polymerization (ATRP) process, where ILBr stands for the reactive ionic liquid surfactant, 1-[11-acryloylundecyl]-3-methyl-imidazolium bromide. An extraordinarily wide molecular weight distrib...

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Veröffentlicht in:Langmuir : the ACS journal of surfaces and colloids. - 1992. - 27(2011), 11 vom: 07. Juni, Seite 7148-57
1. Verfasser: Ma, Xiumin (VerfasserIn)
Weitere Verfasser: Ashaduzzaman, Md, Kunitake, Masashi, Crombez, Rene, Texter, John, Slater, Lisa, Mourey, Thomas
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2011
Zugriff auf das übergeordnete Werk:Langmuir : the ACS journal of surfaces and colloids
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S. Imidazoles Polymers
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520 |a A stimuli-responsive homopolymer poly(ILBr) is fabricated via a "two-phase" atom transfer radical polymerization (ATRP) process, where ILBr stands for the reactive ionic liquid surfactant, 1-[11-acryloylundecyl]-3-methyl-imidazolium bromide. An extraordinarily wide molecular weight distribution (PDI = 6.0) was obtained by introducing the initiator (4-bromomethyl methyl benzoate) in a heterogeneous two-phase process. The molecular weight distribution of poly(ILBr) was characterized by size-exclusion chromatography (SEC). The resulting homopolymer was found to be surface active and stimuli responsive. Poly(ILBr) films coated on quartz exhibit stimuli-responsive dewetting after ion exchange of Br(-) by PF(6)(-). This dewetting phenomenon can be understood in chain segmental terms as a stimuli-induced structural relaxation and appears to be the first such reported stimuli-responsive polymeric dewetting. Titrating aqueous poly(ILBr) with aqueous bis(2-ethylhexyl)sulfosuccinate induces nanophase separation and results in the condensation of nanoparticles 30-60 nm in diameter 
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700 1 |a Ashaduzzaman, Md  |e verfasserin  |4 aut 
700 1 |a Kunitake, Masashi  |e verfasserin  |4 aut 
700 1 |a Crombez, Rene  |e verfasserin  |4 aut 
700 1 |a Texter, John  |e verfasserin  |4 aut 
700 1 |a Slater, Lisa  |e verfasserin  |4 aut 
700 1 |a Mourey, Thomas  |e verfasserin  |4 aut 
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