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Polystyrene-Dendrimer Amphiphilic Block Copolymers with a Generation-Dependent Aggregation
Open accessAbstract
A class of amphiphilic macromolecules has been synthesized by combining well-defined polystyrene (PS) with poly(propylene imine) dendrimers. Five different generations, from PS- dendr -NH 2 up to PS- dendr -(NH 2 ) 32 , were prepared in yields of 70 to 90 percent. Dynamic light scattering, conductivity measurements, and transmission electron microscopy show that in aqueous phases, PS- dendr -(NH 2 ) 32 forms spherical micelles, PS- dendr -(NH 2 ) 16 forms micellar rods, and PS- dendr -(NH 2 ) 8 forms vesicular structures. The lower generations of this class of macromolecules show inverted micellar behavior. The observed effect of amphiphile geometry on aggregation behavior is in qualitative agreement with the theory of Israelachvili et al . The amphiphiles presented here are similar in shape but different in size as compared with traditional surfactants, whereas they are similar in size but different in shape as compared with traditional block copolymers.
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Citations
Cited by
Zhang, L., & Eisenberg, A. (1996) · Journal of the American Chemical Society · doi:10.1021/ja953709s · Cited by 1,262
New developments in hyperbranched polymers
Voit, B. (2000) · Journal of Polymer Science Part A: Polymer Chemistry · doi:10.1002/1099-0518(20000715)38:14<2505::aid-pola10>3.0.co;2-8
Metadata
- Authors
- van Hest, J. C. M., Delnoye, D. A. P., Baars, M. W. P. L., van Genderen, M. H. P., & Meijer, E. W.
- Venue
- Science
- Published
- 1995-06-16
- Volume
- 268
- Issue
- 5217
- Pages
- 1592-1595
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W2052068549
- Cited by
- 499
- References
- 0
- FWCI
- 24.27
- Type
- journal article
- Language
- en
- Open access
- green
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- CoChat. (2026). Citation check: Polystyrene-Dendrimer Amphiphilic Block Copolymers with a Generation-Dependent Aggregation. https://app.cochat.ai/papers/10.1126/science.268.5217.1592
- The paper
- van Hest, J. C. M., Delnoye, D. A. P., Baars, M. W. P. L., van Genderen, M. H. P., & Meijer, E. W. (1995). Polystyrene-Dendrimer Amphiphilic Block Copolymers with a Generation-Dependent Aggregation. Science. https://doi.org/10.1126/science.268.5217.1592
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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