@article {Liu:2009:1533-4880:1198, title = "Electrical-Sensitive Nanoparticle Composed of Chitosan and Tetraethyl Orthosilicate for Controlled Drug Release", journal = "Journal of Nanoscience and Nanotechnology", parent_itemid = "infobike://asp/jnn", publishercode ="asp", year = "2009", volume = "9", number = "2", publication date ="2009-02-01T00:00:00", pages = "1198-1203", itemtype = "ARTICLE", issn = "1533-4880", eissn = "1533-4899", url = "https://www.ingentaconnect.com/content/asp/jnn/2009/00000009/00000002/art00119", doi = "doi:10.1166/jnn.2009.C119", keyword = "ELECTRIC-STIMULI, NANOPARTICLE, POLYELECTROLYTE", author = "Liu, Kun-Ho and Liu, Ting-Yu and Liu, Dean-Mo and Chen, San-Yuan", abstract = "In the present study, the nanoparticles with size of 50130 nm composed of chitosan (CS) and tetraethyl orthosilicate (TEOS), which showed electrically-controlled release profile, were prepared. Myoglobin was encapsulated into the nanoparticles with an encapsulation efficiency as high as 91.5% and a maximum loading capacity of 70.2% that can be achieved. Here, TEOS was hydrolyzed and condensed to form interpenetration network with CS. Increase of TEOS content results in a shift of the release profile from swelling-controlled towards diffusion-controlled mechanism. The "slow-to-burst" and "near-zero" release of the myoglobin can be effectively controlled by applying DC electric field between "on" and "off."", }