Sustained release control via photo-cross-linking of polyelectrolyte layer-by-layer hollow capsules

Mi Kyoung Park, Suxiang Deng, Rigoberto C. Advincula

Research output: Contribution to journalArticle

63 Citations (Scopus)

Abstract

We describe the formation and permeability of polyelectrolyte multilayer hollow-shell capsules by photo-cross-linking and controlled-release (fluorescence) studies. The hollow shells were prepared by alternate layer-by-layer (LbL) adsorption of photo-cross-linkable benzophenone modified poly(allylamme hydrochloride) and poly(sodium 4-styrenesulfonate) on polystyrene particles, followed by removing the core with tetrahydrofuran. Zeta potential measurements, fourier transform infrared spectroscopy, and transmission electron microscopy were used to verify the LbL process integrity. A model drug, rhodamine B (RB), was successfully loaded into the polyelectrolyte hollow capsules. The release kinetics of RB was investigated using fluorescence spectroscopy. The permeability of RB through the hollow shells was effectively controlled based on UV irradiation time. It was shown that the release of RB molecules can be controlled by the degree of cross-linking induced in the multilayer.

Original languageEnglish
Pages (from-to)5272-5277
Number of pages6
JournalLangmuir
Volume21
Issue number12
DOIs
Publication statusPublished - 2005 Jun 7
Externally publishedYes

Fingerprint

rhodamine B
capsules
rhodamine
Polyelectrolytes
Capsules
hollow
Multilayers
Infrared transmission
Fluorescence spectroscopy
Zeta potential
Fourier transform infrared spectroscopy
Polystyrenes
permeability
Fluorescence
Sodium
Irradiation
Transmission electron microscopy
Adsorption
fluorescence
Molecules

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

Cite this

Sustained release control via photo-cross-linking of polyelectrolyte layer-by-layer hollow capsules. / Park, Mi Kyoung; Deng, Suxiang; Advincula, Rigoberto C.

In: Langmuir, Vol. 21, No. 12, 07.06.2005, p. 5272-5277.

Research output: Contribution to journalArticle

Park, Mi Kyoung ; Deng, Suxiang ; Advincula, Rigoberto C. / Sustained release control via photo-cross-linking of polyelectrolyte layer-by-layer hollow capsules. In: Langmuir. 2005 ; Vol. 21, No. 12. pp. 5272-5277.
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