Multicompartment micelles from pH-responsive miktoarm star block terpolymers

Research output: Contribution to journalArticlepeer-review

87 Scopus citations

Abstract

We describe the synthesis of pH-responsive miktoarm star block terpolymers ,μ-[polystyrene][poly(ethylene oxide)] [poly(2-(dimethylamino)ethyl acrylate)] (μ-SODA) using a combination of two successive living anionic polymerizations and one reversible addition-fragmentation chain-transfer polymerization. Poly[2-(dimethylamino)ethyl acrylate] (PDMAEA) is a weak polybase that is hydrophilic at low pH and hydrophobic at high pH because of the protonation of the dimethylamino functional group with decreasing pH. In addition, our results suggest that PDMAEA is immiscible with polystyrene (PS), a feature that is desirable for the formation of multicompartment micelles. Using a combination of dynamic light scattering and cryogenic transmission electron microscopy, we demonstrate that μ-SODA micelles formed in water evolve from mixed corona (PEO + PDMAEA corona; PS core) and predominantly spherical micelles to multicompartment (PEO corona; PS - PDMAEA core) micelles with increasing pH.

Original languageEnglish (US)
Pages (from-to)13718-13725
Number of pages8
JournalLangmuir
Volume25
Issue number24
DOIs
StatePublished - Dec 15 2009

Fingerprint Dive into the research topics of 'Multicompartment micelles from pH-responsive miktoarm star block terpolymers'. Together they form a unique fingerprint.

Cite this