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Sustained Release Properties of Polyelectrolyte Multilayer Capsules
Abstract
Layer-by-layer (LbL) assembly of oppositely charged polyelectrolytes was used to coat fluorescein particles. These particles, with a size of 4−9 μm, were prepared by precipitation of fluorescein at pH 2. Polystyrensulfonate (PSS) and polyallylamine (PAH) were used to form a polyelectrolyte shell on the fluorescein core. The permeation of fluorescein molecules through the polyelectrolyte shell during core dissolution was monitored at pH 8 by the increasing fluorescence intensity as a result of dequenching. The number of polyelectrolyte layers sufficient to sustain fluorescein release was found to be 8−10. Increasing the number of layers prolonged the core dissolution time for minutes. The permeability of polyelectrolyte multilayers of the thickness of 20 nm for fluorescein is about 10 -9 m/s. The features of the release profile and possible applications of the LbL method for shell formation in order to control release properties for entrapped materials are outlined.
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Cited by
Matrix Polyelectrolyte Microcapsules: New System for Macromolecule Encapsulation
Volodkin, D. V., Petrov, A. I., Prevot, M., & Sukhorukov, G. B. (2004) · Langmuir · doi:10.1021/la036177z · Cited by 656
Self-citationvan Dongen, S. F. M., de Hoog, H.-P. M., Peters, R. J. R. W., Nallani, M., Nolte, R. J. M., & van Hest, J. C. M. (2009) · Chemical Reviews · doi:10.1021/cr900072y · Cited by 386
Mahlambi, M. M., Ngila, C. J., & Mamba, B. B. (2015) · Journal of Nanomaterials · doi:10.1155/2015/790173 · Cited by 321
Cui, J., Wang, Y., Postma, A., Hao, J., Hosta‐Rigau, L., & Caruso, F. (2010) · Advanced Functional Materials · doi:10.1002/adfm.201000209 · Cited by 290
Intelligent micro- and nanocapsules
Sukhorukov, G., Fery, A., & Möhwald, H. (2005) · Progress in Polymer Science · doi:10.1016/j.progpolymsci.2005.06.008 · Cited by 288
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Metadata
- Authors
- Antipov, A. A., Sukhorukov, G. B., Donath, E., & Möhwald, H.
- Venue
- The Journal of Physical Chemistry B
- Publisher
- American Chemical Society (ACS)
- Published
- 2001-03-01
- Volume
- 105
- Issue
- 12
- Pages
- 2281-2284
- ISSN
- 1520-5207 (ISSN-L)
- 1520-6106
- OpenAlex
- W2050250735
- Cited by
- 359
- References
- 0
- FWCI
- 15.59
- Type
- journal article
- Language
- en
- Open access
- closed
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- Antipov, A. A., Sukhorukov, G. B., Donath, E., & Möhwald, H. (2001). Sustained Release Properties of Polyelectrolyte Multilayer Capsules. The Journal of Physical Chemistry B. https://doi.org/10.1021/jp002184%2B
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