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Biphase stratification approach to three-dimensional dendritic biodegradable mesoporous silica nanospheres.
- Source :
-
Nano letters [Nano Lett] 2014 Feb 12; Vol. 14 (2), pp. 923-32. Date of Electronic Publication: 2014 Jan 31. - Publication Year :
- 2014
-
Abstract
- A kind of novel uniform monodispersed three-dimensional dendritic mesoporous silica nanospheres (3D-dendritic MSNSs) has been successfully synthesized for the first time. The 3D-dendritic MSNSs can have hierarchical mesostructure with multigenerational, tunable center-radial, and dendritic mesopore channels. The synthesis was carried out in the heterogeneous oil-water biphase stratification reaction system, which allowed the self-assembly of reactants taking place in the oil-water interface for one-pot continuous interfacial growth. The average pore size of each generation for the 3D-dendritic MSNSs can be adjusted from 2.8 to 13 nm independently, which can be controlled by the varied hydrophobic solvents and concentration of silica source in the upper oil phase. The thickness of each generation can be tuned from ∼ 5 to 180 nm as desired, which can be controlled by the reaction time and amount of silica source. The biphase stratification approach can also be used to prepare other core-shell and functional mesoporous materials such as Au nanoparticle@3D-dendritic MSNS and Ag nanocube@3D-dendritic MSNS composites. The 3D-dendritic MSNSs show their unique advantage for protein loading and releasing due to their tunable large pore sizes and smart hierarchical mesostructures. The maximum loading capacity of bovine β-lactoglobulin with 3D-dendritic MSNSs can reach as high as 62.1 wt % due to their large pore volume, and the simulated protein releasing process can be tuned from 24 to 96 h by flexible mesostructures. More importantly, the releasing rates are partly dependent on the hierarchical biodegradation, because the 3D-dendritic MSNSs with larger pore sizes have faster simulated biodegradation rates in simulated body fluid. The most rapid simulated biodegradation can be finished entirely in 24 h, which has been greatly shortened than two weeks for the mesoporous silica reported previously. As the inorganic mesoporous materials, 3D-dendritic MSNSs show excellent biocompatibility, and it would have a hopeful prospect in the clinical applications.
- Subjects :
- Body Fluids chemistry
Diffusion
Lactoglobulins administration & dosage
Materials Testing
Nanocapsules ultrastructure
Nanopores ultrastructure
Nanospheres ultrastructure
Particle Size
Phase Transition
Porosity
Surface Properties
Absorbable Implants
Drug Implants chemical synthesis
Lactoglobulins chemistry
Nanocapsules chemistry
Nanospheres chemistry
Silicon Dioxide chemistry
Subjects
Details
- Language :
- English
- ISSN :
- 1530-6992
- Volume :
- 14
- Issue :
- 2
- Database :
- MEDLINE
- Journal :
- Nano letters
- Publication Type :
- Academic Journal
- Accession number :
- 24467566
- Full Text :
- https://doi.org/10.1021/nl404316v