Photoresponsive Bridged Silsesquioxane Nanoparticles with Tunable Morphology for Light-Triggered Plasmid DNA Delivery
Croissant, Jonas G.
Alsaiari, Shahad K.
Anjum, Dalaver H.
Khashab, Niveen M.
KAUST DepartmentAdvanced Membranes and Porous Materials Research Center
Chemical Science Program
Imaging and Characterization Core Lab
Physical Sciences and Engineering (PSE) Division
Smart Hybrid Materials (SHMs) lab
Permanent link to this recordhttp://hdl.handle.net/10754/578841
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AbstractBridged silsesquioxane nanocomposites with tunable morphologies incorporating o-nitrophenylene-ammonium bridges are described. The systematic screening of the sol-gel parameters allowed the material to reach the nanoscale –unlike most reported bridged silsesquioxane materials– with controlled dense and hollow structures of 100 to 200 nm. The hybrid composition of silsesquioxanes with 50% of organic content homogenously distributed in the nanomaterials endowed them with photoresponsive properties. Light irradiation was performed to reverse the surface charge of nanoparticles from +46 to -39 mV via the photoreaction of the organic fragments within the particles, as confirmed by spectroscopic monitorings. Furthermore, such NPs were ap-plied for the first time for the on-demand delivery of plasmid DNA in HeLa cancer cells via light actuation.
CitationPhotoresponsive Bridged Silsesquioxane Nanoparticles with Tunable Morphology for Light-Triggered Plasmid DNA Delivery 2015:150925103151004 ACS Applied Materials & Interfaces
PublisherAmerican Chemical Society (ACS)
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