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Amphiphilic Janus Micelles with Polystyrene and Poly(methacrylic acid) Hemispheres
Abstract
We describe the synthesis and the solution properties of Janus micelles containing a polybutadiene (PB) core and a compartmentalized corona consisting of a poly(methacrylic acid) (PMAA) and a polystyrene (PS) hemisphere. The Janus micelles were obtained via cross-linking the middle block of a microphase-separated PS-block-PB-block-PMMA triblock copolymer in the bulk state, followed by alkaline hydrolysis of the poly(methyl methacrylate) (PMMA) ester groups. Results of fluorescence correlation spectroscopy, field flow fractionation, light scattering, cryogenic transmission electron microscopy, scanning electron microscopy, and scanning force microscopy indicate that above a critical aggregation concentration of about 0.03 g/L spherical supermicelles are formed from about 30 PS-PMAA micelles in aqueous solution in the presence of NaCl. These supermicelles have radii of 40-60 nm, significantly increasing on ionization (pH >6). In addition, very large spherical objects are observed with radii of 100-250 nm.
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Cited by
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Self-citationGohy, J.-F. (2005) · Advances in Polymer Science · doi:10.1007/12_048 · Cited by 542
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HADJICHRISTIDIS, N., IATROU, H., PITSIKALIS, M., PISPAS, S., & AVGEROPOULOS, A. (2005) · Progress in Polymer Science · doi:10.1016/j.progpolymsci.2005.04.001 · Cited by 428
Block copolymer nanostructures
Smart, T., Lomas, H., Massignani, M., Flores-Merino, M. V., Perez, L. R., & Battaglia, G. (2008) · Nano Today · doi:10.1016/s1748-0132(08)70043-4 · Cited by 422
Janus Particles at Liquid−Liquid Interfaces
Glaser, N., Adams, D. J., Böker, A., & Krausch, G. (2006) · Langmuir · doi:10.1021/la060693i · Cited by 416
Self-citationRecent advances in shell cross-linked micelles
Read, E. S., & Armes, S. P. (2007) · Chemical Communications · doi:10.1039/b701217a · Cited by 401
Polymeric Surfactants: Synthesis, Properties, and Links to Applications
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Mori, H., & Müller, A. H. E. (2003) · Progress in Polymer Science · doi:10.1016/s0079-6700(03)00076-5 · Cited by 277
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Metadata
- Authors
- Erhardt, R., Zhang, M., Böker, A., Zettl, H., Abetz, C., Frederik, P., Krausch, G., Abetz, V., & Müller, A. H. E.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2003-02-21
- Volume
- 125
- Issue
- 11
- Pages
- 3260-3267
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W2023913432
- Cited by
- 359
- References
- 0
- FWCI
- 11.04
- Type
- journal article
- Language
- en
- Open access
- closed
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