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Grunberger JW, Ghandehari H. Layer-by-Layer Hollow Mesoporous Silica Nanoparticles with Tunable Degradation Profile. Pharmaceutics 2023; 15:832. [PMID: 36986693 PMCID: PMC10057406 DOI: 10.3390/pharmaceutics15030832] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Revised: 02/28/2023] [Accepted: 03/01/2023] [Indexed: 03/08/2023] Open
Abstract
Silica nanoparticles (SNPs) have shown promise in biomedical applications such as drug delivery and imaging due to their versatile synthetic methods, tunable physicochemical properties, and ability to load both hydrophilic and hydrophobic cargo with high efficiency. To improve the utility of these nanostructures, there is a need to control the degradation profile relative to specific microenvironments. The design of such nanostructures for controlled combination drug delivery would benefit from minimizing degradation and cargo release in circulation while increasing intracellular biodegradation. Herein, we fabricated two types of layer-by-layer hollow mesoporous SNPs (HMSNPs) containing two and three layers with variations in disulfide precursor ratios. These disulfide bonds are redox-sensitive, resulting in a controllable degradation profile relative to the number of disulfide bonds present. Particles were characterized for morphology, size and size distribution, atomic composition, pore structure, and surface area. No difference was observed between in vitro cytotoxicity profiles of the fabricated nanoparticles at 24 h in the concentration range below 100 µg mL-1. The degradation profiles of particles were evaluated in simulated body fluid in the presence of glutathione. The results demonstrate that the composition and number of layers influence degradation rates, and particles containing a higher number of disulfide bridges were more responsive to enzymatic degradation. These results indicate the potential utility of layer-by-layer HMSNPs for delivery applications where tunable degradation is desired.
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Affiliation(s)
- Jason William Grunberger
- Utah Center for Nanomedicine, Department of Molecular Pharmaceutics, University of Utah, Salt Lake City, UT 84112, USA
| | - Hamidreza Ghandehari
- Utah Center for Nanomedicine, Department of Molecular Pharmaceutics, University of Utah, Salt Lake City, UT 84112, USA
- Department of Biomedical Engineering, University of Utah, Salt Lake City, UT 84112, USA
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Song Y, Cheng D, Luo J, Zhang M, Yang Y. Surfactant-free synthesis of monodispersed organosilica particles with pure sulfide-bridged silsesquioxane framework chemistry via extension of Stöber method. J Colloid Interface Sci 2021; 591:129-138. [PMID: 33596502 DOI: 10.1016/j.jcis.2021.01.071] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Revised: 01/21/2021] [Accepted: 01/22/2021] [Indexed: 11/26/2022]
Abstract
Sulfide bond incorporated organosilica particles have been broadly applied to versatile biomedical applications, wherein the uniformity of particles and the sulfur content significantly dictate the ultimate performance. Unfortunately, due to the difficulty in controlling the chemical behavior of organosilica precursors in a sol-gel process, challenges still exist in developing a facile and green synthetic approach to fabricate organosilica particles with good dispersity and high sulfur content. In the present work, by extending the classic Stöber method, a surfactant-free synthesis of monodispersed organosilica particles with pure sulfide-bridged silsesquioxane framework chemistry is reported for the first time. By simply tailoring the ethanol-to-water ratio and amount of catalyst, the size of disulfide-bridged organosilica particles can be tuned from ~0.50 to ~1.20 µm. Moreover, this approach can be employed to prepare tetra-sulfide bridged silica nanoparticles with an extremely high sulfur content of 30.7 wt% and negligible cytotoxicity. Notably, taking advantage of this extended Stöber method, both hydrophilic (methylene blue) and hydrophobic (curcumin) molecules can be in-situ encapsulated into tetra-sulfide bridged silica nanoparticles, whose glutathione-triggered biodegradability is also demonstrated. Collectively, the innovative synthetic approach and organosilica particles developed in this work are expected to open up new opportunities in hybrid materials fabrication and bio-applications.
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Affiliation(s)
- Yaping Song
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Dan Cheng
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Jiangqi Luo
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Min Zhang
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200241, PR China.
| | - Yannan Yang
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, Queensland 4072, Australia.
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Functionalized Periodic Mesoporous Organosilicas: Tunable Hydrophobic Solid Acids for Biomass Conversion. Molecules 2019; 24:molecules24020239. [PMID: 30634651 PMCID: PMC6359465 DOI: 10.3390/molecules24020239] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Revised: 12/28/2018] [Accepted: 01/04/2019] [Indexed: 12/15/2022] Open
Abstract
The catalytic deoxygenation of bio-based feedstocks to fuels and chemicals presents new challenges to the catalytic scientist, with many transformations either performed in or liberating water as a byproduct during reaction. The design of catalysts with tunable hydrophobicity to aid product and reactant adsorption or desorption, respectively, is vital for processes including (trans)esterification and condensation reactions employed in sustainable biodiesel production and bio-oil upgrading processes. Increasing surface hydrophobicity of catalyst materials offers a means to displace water from the catalyst active site, and minimizes potential deactivation or hydrolysis side reactions. Hybrid organic⁻inorganic porous solids offer exciting opportunities to tune surface polarity and hydrophobicity, as well as critical parameters in controlling adsorption, reactant activation, and product selectivity in liquid and vapor phase catalysis. Here, we review advances in the synthesis and application of sulfonic-acid-functionalized periodic mesoporous organosilicas (PMO) as tunable hydrophobic solid acid catalysts in reactions relevant to biorefining and biofuel production.
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Esquivel D, Ouwehand J, Meledina M, Turner S, Tendeloo GV, Romero-Salguero FJ, Clercq JD, Voort PVD. Thiol-ethylene bridged PMO: A high capacity regenerable mercury adsorbent via intrapore mercury thiolate crystal formation. JOURNAL OF HAZARDOUS MATERIALS 2017; 339:368-377. [PMID: 28668754 DOI: 10.1016/j.jhazmat.2017.06.051] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Revised: 05/22/2017] [Accepted: 06/20/2017] [Indexed: 06/07/2023]
Abstract
Highly ordered thiol-ethylene bridged Periodic Mesoporous Organosilicas were synthesized directly from a homemade thiol-functionalized bis-silane precursor. These high surface area materials contain up to 4.3mmol/g sulfur functions in the walls and can adsorb up to 1183mg/g mercury ions. Raman spectroscopy reveals the existence of thiol and disulfide moieties. These groups have been evaluated by a combination of Raman spectroscopy, Ellman's reagent and elemental analysis. The adsorption of mercury ions was evidenced by different techniques, including Raman, XPS and porosimetry, which indicate that thiol groups are highly accessible to mercury. Scanning transmission electron microscopy combined with EDX showed an even homogenous distribution of the sulfur atoms throughout the structure, and have revealed for the first time that a fraction of the adsorbed mercury is forming thiolate nanocrystals in the pores. The adsorbent is highly selective for mercury and can be regenerated and reused multiple times, maintaining its structure and functionalities and showing only a marginal loss of adsorption capacity after several runs.
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Affiliation(s)
- Dolores Esquivel
- Department of Inorganic and Physical Chemistry, Center for Ordered Materials, Organometallics & Catalysis, Ghent University, Krijgslaan 281-S3, 9000 Ghent, Belgium; Departamento de Química Orgánica, Instituto Universitario de Investigación en Química Fina y Nanoquímica IUIQFN, Facultad de Ciencias, Universidad de Córdoba, Campus de Rabanales, Edificio Marie Curie, E-14071 Córdoba, España.
| | - Judith Ouwehand
- Department of Inorganic and Physical Chemistry, Center for Ordered Materials, Organometallics & Catalysis, Ghent University, Krijgslaan 281-S3, 9000 Ghent, Belgium
| | - Maria Meledina
- Electron Microscopy for Materials Science (EMAT), University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
| | - Stuart Turner
- Electron Microscopy for Materials Science (EMAT), University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
| | - Gustaaf Van Tendeloo
- Electron Microscopy for Materials Science (EMAT), University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
| | - Francisco J Romero-Salguero
- Departamento de Química Orgánica, Instituto Universitario de Investigación en Química Fina y Nanoquímica IUIQFN, Facultad de Ciencias, Universidad de Córdoba, Campus de Rabanales, Edificio Marie Curie, E-14071 Córdoba, España
| | - Jeriffa De Clercq
- Industrial Catalysis and Adsorption Technology (INCAT), Department of Chemical Engineering and Technical Chemistry, Faculty of Engineering and Architecture, Ghent University, Valentin Vaerwyckweg 1, 9000 Ghent, Belgium
| | - Pascal Van Der Voort
- Department of Inorganic and Physical Chemistry, Center for Ordered Materials, Organometallics & Catalysis, Ghent University, Krijgslaan 281-S3, 9000 Ghent, Belgium.
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Mesoporous silica nanoparticles with organo-bridged silsesquioxane framework as innovative platforms for bioimaging and therapeutic agent delivery. Biomaterials 2016; 91:90-127. [DOI: 10.1016/j.biomaterials.2016.03.019] [Citation(s) in RCA: 204] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Revised: 03/05/2016] [Accepted: 03/13/2016] [Indexed: 01/23/2023]
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Wu M, Meng Q, Chen Y, Du Y, Zhang L, Li Y, Zhang L, Shi J. Large-pore ultrasmall mesoporous organosilica nanoparticles: micelle/precursor co-templating assembly and nuclear-targeted gene delivery. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2015; 27:215-22. [PMID: 25423915 DOI: 10.1002/adma.201404256] [Citation(s) in RCA: 200] [Impact Index Per Article: 22.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2014] [Indexed: 05/07/2023]
Abstract
A novel micelle/precursor co-templating assembly strategy is successfully developed to synthesize large-pore ultrasmall mesoporous organosilica nanoparticles (MONs). Furthermore, elaborately designed MONs with a cell-penetrating peptide (TAT) (MONs-PTAT) are constructed for highly efficient intranuclear gene delivery. They exhibit a high loading capacity, improved protection for the loaded gene, and enhanced transfection efficiencies of EGFP plasmid (pEGFP).
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Affiliation(s)
- Meiying Wu
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Ding-Xi Road, Shanghai, 200050, PR China
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Wahab MA, Beltramini JN. Recent advances in hybrid periodic mesostructured organosilica materials: opportunities from fundamental to biomedical applications. RSC Adv 2015. [DOI: 10.1039/c5ra10062c] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Periodic mesoporous organosilica nanostructures functionalized with various active functional groups: from design to biomedical applications.
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Affiliation(s)
- Mohammad A. Wahab
- Nanomaterials Centre
- Australian Institute for Bioengineering and Nanotechnology
- The University of Queensland
- Brisbane
- Australia
| | - Jorge N. Beltramini
- Nanomaterials Centre
- Australian Institute for Bioengineering and Nanotechnology
- The University of Queensland
- Brisbane
- Australia
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Samiey B, Cheng CH, Wu J. Organic-Inorganic Hybrid Polymers as Adsorbents for Removal of Heavy Metal Ions from Solutions: A Review. MATERIALS (BASEL, SWITZERLAND) 2014; 7:673-726. [PMID: 28788483 PMCID: PMC5453072 DOI: 10.3390/ma7020673] [Citation(s) in RCA: 151] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/25/2013] [Revised: 01/06/2014] [Accepted: 01/10/2014] [Indexed: 11/16/2022]
Abstract
Over the past decades, organic-inorganic hybrid polymers have been applied in different fields, including the adsorption of pollutants from wastewater and solid-state separations. In this review, firstly, these compounds are classified. These compounds are prepared by sol-gel method, self-assembly process (mesopores), assembling of nanobuilding blocks (e.g., layered or core-shell compounds) and as interpenetrating networks and hierarchically structures. Lastly, the adsorption characteristics of heavy metals of these materials, including different kinds of functional groups, selectivity of them for heavy metals, effect of pH and synthesis conditions on adsorption capacity, are studied.
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Affiliation(s)
- Babak Samiey
- Department of Chemistry, Faculty of Science, Lorestan University, Khoramabad 68137-17133, Iran.
| | - Chil-Hung Cheng
- Department of Chemical Engineering, Ryerson University, Toronto, ON M5B 2K3, Canada.
| | - Jiangning Wu
- Department of Chemical Engineering, Ryerson University, Toronto, ON M5B 2K3, Canada.
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Ravi S, Selvaraj M, Park H, Chun HH, Ha CS. Novel hierarchically dispersed mesoporous silica spheres: effective adsorbents for mercury from wastewater and a thermodynamic study. NEW J CHEM 2014. [DOI: 10.1039/c4nj00418c] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Hierarchically dispersed spherical mesoporous silica (HSMS) was easily synthesized using three surfactants (CTAB, PF127 and FC-4). This is then successfully modified with thiol groups and used for mercury adsorption studies.
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Affiliation(s)
- Seenu Ravi
- School of Chemical and Biomolecular Engineering
- Pusan National University
- Busan 609-735, Korea
| | - Manickam Selvaraj
- School of Chemical and Biomolecular Engineering
- Pusan National University
- Busan 609-735, Korea
| | - Hyun Park
- Global Core Research Centre for Ships and Offshore Plants
- Pusan National University
- Busan 609-735, Korea
| | - Ho-Hwan Chun
- Global Core Research Centre for Ships and Offshore Plants
- Pusan National University
- Busan 609-735, Korea
| | - Chang-Sik Ha
- Department of Polymer Science and Engineering
- Pusan National University
- Busan 609-735, Korea
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Li Q, Wang Z, Fang DM, Qu HY, Zhu Y, Zou HJ, Chen YR, Du YP, Hu HL. Preparation, characterization, and highly effective mercury adsorption ofl-cysteine-functionalized mesoporous silica. NEW J CHEM 2014. [DOI: 10.1039/c3nj00799e] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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Oliveira VV, Airoldi C. Assistant template and co-template agents in modeling mesoporous silicas and post-synthesizing organofunctionalizations. J SOLID STATE CHEM 2012. [DOI: 10.1016/j.jssc.2012.05.042] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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