Release behavior of thin-walled microcapsules composed of polyelectrolyte multilayers.

摘要: The release properties of the fluorescent probe pyrene, PYR, encapsulated in polyelectrolyte multilayer capsules were examined by fluorescence spectroscopy. PYR was layer-by-layer deposition oppositely charged polyelectrolytes onto microcrystal templates, and its accomplished exposing polyelectrolyte-coated microcrystals to ethanol solutions. Solubilization hydrophobic resulted expulsion from core through permeable shells. rate, quantified following monomer solubilized as a function time, decreased with increasing number layers deposited cores. In addition, two amphiphiles (sodium dodecyl sulfate dipalmitoyl-dl-α-phosphatidylcholine) used disperse aqueous solution prior coating significantly influenced rate. maximum defi...