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Colloid and Polymer Science
Erschienen in: Colloid and Polymer Science 4/2019

15.02.2019 | Short Communication

CO2-responsive behavior of polymer giant vesicles supporting hindered amine

verfasst von: Eri Yoshida

Erschienen in: Colloid and Polymer Science | Ausgabe 4/2019

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Abstract

The CO2-responsive behavior of giant vesicles supporting hindered amines on the shells was investigated with the aim of reversible control of the self-assembly. The investigation was carried out using vesicles consisting of poly(2,2,6,6-tetramethyl-4-piperidyl methacrylate)-block-poly(methyl methacrylate-random-2,2,6,6-tetramethyl-4-piperidyl methacrylate), PTPMA55-b-P(MMA0.977-r-TPMA0.023)321, in an aqueous methanol solution. As CO2 was introduced into the vesicle solution, the electroconductivity and transmittance increased whereas the scattering intensity and hydrodynamic diameter for the light scattering measurements decreased due to the dissociation of the vesicles into micelles based on the protonation of the hindered amines on the shells. The introduction of Ar instead of CO2 produced inverse changes in these factors based on the aggregation of the micelles due to the deprotonation. The vesicles showed a good hysteresis for the cycles of the CO2-Ar introduction. It was found that the dissociation-aggregation of the vesicles was reversibly controlled by the alternate CO2-Ar introduction.
Vorheriger Artikel Preparation of spindle-shaped polyaniline supported Au catalysts with enhanced catalytic reduction of 4-nitrophenol

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Metadaten
Titel
CO2-responsive behavior of polymer giant vesicles supporting hindered amine
verfasst von
Eri Yoshida
Publikationsdatum
15.02.2019
Verlag
Springer Berlin Heidelberg
Erschienen in
Colloid and Polymer Science / Ausgabe 4/2019
Print ISSN: 0303-402X
Elektronische ISSN: 1435-1536
DOI
https://doi.org/10.1007/s00396-019-04484-8

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