pH-Dependent Behavior of Hydrophobically Modified Polyelectrolyte Shells of Polymeric Nanoparticles

0323590 - ÚFCH JH 2009 RIV DE eng J - Journal Article
Procházka, K. - Matějíček, P. - Uchman, M. - Štěpánek, M. - Humpolíčková, Jana - Hof, Martin - Špírková, Milena
pH-Dependent Behavior of Hydrophobically Modified Polyelectrolyte Shells of Polymeric Nanoparticles.
[pH závislé chování hydrofobicky modifikovaných polyelektrolytových slupek polymerních nanočástic.]
Macromolecular Symposia. Roč. 273, - (2009), s. 95-102. ISSN 1022-1360
R&D Projects: GA AV ČR IAA400500505; GA ČR GA203/08/0465
Institutional research plan: CEZ:AV0Z40400503; CEZ:AV0Z40500505
Keywords : block polyelectrolyte micelles * light scattering * nonradiative excitation energy transfer * time-resolved fluorescence
Subject RIV: CF - Physical ; Theoretical Chemistry

The self-assembled core-shell nanoparticles based on fluorescently double-tagged high-molar-mass polystyrene-block-poly(methacrylic acid), PS-PMA, were prepared in aqueous buffers by dialysis from 1,4-dioxane - water mixtures. The conformations of shell-forming PMA chains were studied using nonradiative excitation energy transfer measurements. The study shows that two populations of distinctly different conformations (collapsed and stretched) coexist in the shell and their ratio depends on pH.

V práci se zabýváme problematikou pH závislého chování hydrofobicky modifikovaných polyelektrolytových slupek polymerních nanočástic.
Permanent Link: http://hdl.handle.net/11104/0171501