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Article

Plasmon-Enhanced Controlled Drug Release from Ag-PMA Capsules

1
Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale F. Stagno D’Alcontres 31, I-98166 Messina, Italy
2
Department of Mathematical and Computational Sciences, Physics Science and Earth Science, University of Messina, Viale F. Stagno D’Alcontres 31, I-98166 Messina, Italy
*
Author to whom correspondence should be addressed.
Molecules 2020, 25(9), 2267; https://doi.org/10.3390/molecules25092267
Received: 4 April 2020 / Revised: 1 May 2020 / Accepted: 6 May 2020 / Published: 11 May 2020
Silver (Ag)-grafted PMA (poly-methacrylic acid, sodium salt) nanocomposite loaded with sorafenib tosylate (SFT), an anticancer drug, showed good capability as a drug carrier allowing on-demand control of the dose, timing and duration of the drug release by laser irradiation stimuli. In this study, the preparation of Ag-PMA capsules loaded with SFT by using sacrificial silica microparticles as templates was reported. A high drug loading (DL%) of ∼13% and encapsulation efficiency (EE%) of about 76% were obtained. The photo-release profiles were regulated via the adjustment of light wavelength and power intensity. A significant improvement of SFT release (14% vs. 21%) by comparing SFT-Ag-PMA capsules with Ag-PMA colloids under the same experimental conditions was observed. Moreover, an increase of drug release by up to 35% was reached by tuning the laser irradiation wavelength near to Ag nanoparticles’ surface plasmon resonance (SPR). These experimental results together with more economical use of the active component suggest the potentiality of SFT-Ag-PMA capsules as a smart drug delivery system. View Full-Text
Keywords: metal-polymeric composite; silica template; drug nanocarrier; light stimuli drug release; surface plasmon resonance metal-polymeric composite; silica template; drug nanocarrier; light stimuli drug release; surface plasmon resonance
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MDPI and ACS Style

Neri, G.; Corsaro, C.; Fazio, E. Plasmon-Enhanced Controlled Drug Release from Ag-PMA Capsules. Molecules 2020, 25, 2267. https://doi.org/10.3390/molecules25092267

AMA Style

Neri G, Corsaro C, Fazio E. Plasmon-Enhanced Controlled Drug Release from Ag-PMA Capsules. Molecules. 2020; 25(9):2267. https://doi.org/10.3390/molecules25092267

Chicago/Turabian Style

Neri, Giulia, Carmelo Corsaro, and Enza Fazio. 2020. "Plasmon-Enhanced Controlled Drug Release from Ag-PMA Capsules" Molecules 25, no. 9: 2267. https://doi.org/10.3390/molecules25092267

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