1
|
Steinbach J, Fait F, Mayer HA, Kandelbauer A. Sol-Gel-Controlled Size and Morphology of Mesoporous Silica Microspheres Using Hard Templates. ACS OMEGA 2023; 8:30273-30284. [PMID: 37636943 PMCID: PMC10448668 DOI: 10.1021/acsomega.3c03098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Accepted: 07/28/2023] [Indexed: 08/29/2023]
Abstract
Mesoporous silica microspheres (MPSMs) represent a promising material as a stationary phase for HPLC separations. The use of hard templates provides a preparation strategy for producing such monodisperse silica microspheres. Here, 15 MPSMs were systematically synthesized by varying the sol-gel reaction parameters of water-to-precursor ratio and ammonia concentration in the presence of a porous p(GMA-co-EDMA) polymeric hard template. Changing the sol-gel process factors resulted in a wide range of MPSMs with varying particle sizes from smaller than one to several micrometers. The application of response surface methodology allowed to derive quantitative predictive models based on the process factor effects on particle size, pore size, pore volume, and specific surface area of the MPSMs. A narrow size distribution of the silica particles was maintained over the entire experimental space. Two larger-scale batches of MPSMs were prepared, and the particles were functionalized with trimethoxy(octadecyl) silane for the application as stationary phase in reversed-phases liquid chromatography. The separation of proteins and amino acids was successfully accomplished, and the effect of the pore properties of the silica particles on separation was demonstrated.
Collapse
Affiliation(s)
- Julia
C. Steinbach
- Process Analysis
& Technology, Reutlingen Research Institute, Reutlingen University, Alteburgstraße 150, Reutlingen 72762, Germany
- Institute of Inorganic Chemistry, University of Tübingen, Auf der Morgenstelle 18, Tübingen 72076, Germany
| | - Fabio Fait
- Process Analysis
& Technology, Reutlingen Research Institute, Reutlingen University, Alteburgstraße 150, Reutlingen 72762, Germany
- Institute of Inorganic Chemistry, University of Tübingen, Auf der Morgenstelle 18, Tübingen 72076, Germany
| | - Hermann A. Mayer
- Institute of Inorganic Chemistry, University of Tübingen, Auf der Morgenstelle 18, Tübingen 72076, Germany
| | - Andreas Kandelbauer
- Process Analysis
& Technology, Reutlingen Research Institute, Reutlingen University, Alteburgstraße 150, Reutlingen 72762, Germany
- Institute of Wood Technology and Renewable
Materials, Department of Material Sciences and Process Engineering
(MAP), University of Natural Resources and
Life Sciences, Gregor-Mendel-Straße
33, Vienna 1180, Austria
| |
Collapse
|
2
|
Baek J, Robert-Nicoud G, Herrera Hidalgo C, Borg ML, Iqbal MN, Berlin R, Lindgren M, Waara E, Uddén A, Pietiläinen K, Bengtsson T. Engineered mesoporous silica reduces long-term blood glucose, HbA1c, and improves metabolic parameters in prediabetics. Nanomedicine (Lond) 2021; 17:9-22. [PMID: 34854740 DOI: 10.2217/nnm-2021-0235] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Aim: To investigate the effect of oral consumption of engineered mesoporous silica particles, SiPore15®, on long-term blood glucose levels and other metabolic parameters in individuals with prediabetes and newly diagnosed Type 2 diabetes. Method: An open-label, single-arm, multicenter trial was conducted in which SiPore15 was consumed three times daily for 12 weeks. Hemoglobin A1c (HbA1c, primary end point) and an array of metabolic parameters were measured at baseline and throughout the trial. Result: SiPore15 treatment significantly reduced HbA1c by a clinically meaningful degree and improved several disease-associated parameters with minimal side effects. Conclusion: The results from this study demonstrate the potential use of SiPore15 as a treatment for prediabetes that may also delay or prevent the onset of Type 2 diabetes.
Collapse
Affiliation(s)
- Jeanha Baek
- Sigrid Therapeutics AB, Norrtullsgatan 6, Stockholm, SE-113 29, Sweden
| | | | | | - Melissa L Borg
- Sigrid Therapeutics AB, Norrtullsgatan 6, Stockholm, SE-113 29, Sweden
| | - Muhammad N Iqbal
- Sigrid Therapeutics AB, Norrtullsgatan 6, Stockholm, SE-113 29, Sweden.,Department of Materials and Environmental Chemistry, Stockholm University, Stockholm, SE-106 91, Sweden
| | - Roger Berlin
- 1.618 Consulting LLC, Philadelphia, PA 19107, USA
| | - Maria Lindgren
- Sigrid Therapeutics AB, Norrtullsgatan 6, Stockholm, SE-113 29, Sweden
| | - Erik Waara
- Sigrid Therapeutics AB, Norrtullsgatan 6, Stockholm, SE-113 29, Sweden
| | - Anna Uddén
- Sigrid Therapeutics AB, Norrtullsgatan 6, Stockholm, SE-113 29, Sweden
| | - Kirsi Pietiläinen
- Obesity Research Unit, Research Program for Clinical and Molecular Metabolism, Faculty of Medicine, University of Helsinki, Helsinki, 00014, Finland.,Obesity Center, Abdominal Center, Helsinki University Hospital and University of Helsinki, Helsinki, 00014, Finland
| | - Tore Bengtsson
- Department of Molecular Biosciences, The Wenner-Gren Institute, Stockholm University, Stockholm, SE-106 91, Sweden
| |
Collapse
|
3
|
Ethylbenzene oxidation over KIT-6 mesoporous silica-based hybrid supported catalysts. JOURNAL OF POLYMER RESEARCH 2021. [DOI: 10.1007/s10965-021-02825-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
|
4
|
Nanofiltration Composite Membranes Based on KIT-6 and Functionalized KIT-6 Nanoparticles in a Polymeric Matrix with Enhanced Performances. MEMBRANES 2021; 11:membranes11050300. [PMID: 33918993 PMCID: PMC8143004 DOI: 10.3390/membranes11050300] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 04/14/2021] [Accepted: 04/17/2021] [Indexed: 01/04/2023]
Abstract
The nanofiltration composite membranes were obtained by incorporation of KIT-6 ordered mesoporous silica, before and after its functionalization with amine groups, into polyphenylene-ether-ether-sulfone (PPEES) matrix. The incorporation of silica nanoparticles into PPEES polymer matrix was evidenced by FTIR and UV–VIS spectroscopy. SEM images of the membranes cross-section and their surface topology, evidenced by AFM, showed a low effect of KIT-6 silica nanoparticles loading and functionalization. The performances of the obtained membranes were appraised in permeation of Chaenomeles japonica fruit extracts and the selective separation of phenolic acids and flavonoids. The obtained results proved that the PPEES with functionalized KIT-6 nanofiltration membrane, we have prepared, is suitable for the polyphenolic compound’s concentration from the natural extracts.
Collapse
|
5
|
Wahab MA, Karim MR, Aijaz MO, Salahuddin B, Aziz S, Sina AAI. A Study on the Interfacial Compatibility, Microstructure and Physico-Chemical Properties of Polyimide/Organically Modified Silica Nanocomposite Membrane. Polymers (Basel) 2021; 13:1328. [PMID: 33919649 PMCID: PMC8072626 DOI: 10.3390/polym13081328] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2021] [Revised: 04/06/2021] [Accepted: 04/11/2021] [Indexed: 11/16/2022] Open
Abstract
Polyimide-silica (PI-Silica) composites are of tremendous research interest as high-performance materials because of their excellent thermal and mechanical properties and chemical resistance to organic solvents. Particularly, the sol-gel method of fabricating such composites is popular for manipulating their properties. In this work, PI-silica composite films are synthesized by the sol-gel method and thermal imidization from the solution mixtures of hydrolyzed tetraethoxysilane (TEOS) (or glycidoxypropyltrimethoxysilane (GPMS)) modified silica and an aromatic polyamic acid (PAA) based on 3,3',4,4'-biphenyl tetracarboxylic dianhydride (BPDA)-p-phenylenediamine (PDA). The phase morphology of composites is found to be controlled by the substitution of TEOS with GPMS. Solid-state NMR spectroscopy is used to confirm the structural components of silica and GPMS-modified silica, whereas FT-IR results confirm the complete imidization of polyimide and composite film and suggest successful incorporation of Si-O-Si bonds into polyimide. The thermal, optical transmittance, and dielectric constant characterizations of pure polyimide and composite films are also carried out. Thermal stability of pure polyimide is found to be increased significantly by the addition of silica, whereas the partial substitution of TEOS with GPMS decreases the thermal stability of the composite, due to the presence of the alkyl organic segment of GPMS. The optical transmittance and dielectric constant of the composite films are controlled by manipulating the GPMS content.
Collapse
Affiliation(s)
- Md A. Wahab
- Institute for Advanced Study, Chengdu University, Chengdu 610106, China
- Institute of Materials Research and Engineering (IMRE) of The Agency for Science, Technology, and Research (A*STAR), 3 Research Link, Singapore 117602, Singapore
| | - Mohammad R. Karim
- Center of Excellence for Research in Engineering Materials (CEREM), Deanship of Scientific Research (DSR), King Saud University, Riyadh 11421, Saudi Arabia; (M.R.K.); (M.O.A.)
- K. A. CARE Energy Research and Innovation Center, Riyadh 11451, Saudi Arabia
| | - Muhammad O. Aijaz
- Center of Excellence for Research in Engineering Materials (CEREM), Deanship of Scientific Research (DSR), King Saud University, Riyadh 11421, Saudi Arabia; (M.R.K.); (M.O.A.)
| | - Bidita Salahuddin
- ARC Centre of Excellence for Electromaterials Science and Intelligent Polymer Research Institute, Innovation Campus, University of Wollongong, Squires Way, North Wollongong, NSW 2522, Australia;
| | - Shazed Aziz
- School of Chemical Engineering, The University of Queensland, QLD 4072, Australia
| | - Abu A. I. Sina
- Centre for Personalized Nanomedicine, Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, QLD 4072, Australia
| |
Collapse
|
6
|
Pouroutzidou GK, Liverani L, Theocharidou A, Tsamesidis I, Lazaridou M, Christodoulou E, Beketova A, Pappa C, Triantafyllidis KS, Anastasiou AD, Papadopoulou L, Bikiaris DN, Boccaccini AR, Kontonasaki E. Synthesis and Characterization of Mesoporous Mg- and Sr-Doped Nanoparticles for Moxifloxacin Drug Delivery in Promising Tissue Engineering Applications. Int J Mol Sci 2021; 22:E577. [PMID: 33430065 PMCID: PMC7827177 DOI: 10.3390/ijms22020577] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Revised: 12/30/2020] [Accepted: 01/04/2021] [Indexed: 02/07/2023] Open
Abstract
Mesoporous silica-based nanoparticles (MSNs) are considered promising drug carriers because of their ordered pore structure, which permits high drug loading and release capacity. The dissolution of Si and Ca from MSNs can trigger osteogenic differentiation of stem cells towards extracellular matrix calcification, while Mg and Sr constitute key elements of bone biology and metabolism. The aim of this study was the synthesis and characterization of sol-gel-derived MSNs co-doped with Ca, Mg and Sr. Their physico-chemical properties were investigated by X-ray diffraction (XRD), scanning electron microscopy with energy dispersive X-ray analysis (SEM/EDX), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), X-ray fluorescence spectroscopy (XRF), Brunauer Emmett Teller and Brunauer Joyner Halenda (BET/BJH), dynamic light scattering (DLS) and ζ-potential measurements. Moxifloxacin loading and release profiles were assessed with high performance liquid chromatography (HPLC) cell viability on human periodontal ligament fibroblasts and their hemolytic activity in contact with human red blood cells (RBCs) at various concentrations were also investigated. Doped MSNs generally retained their textural characteristics, while different compositions affected particle size, hemolytic activity and moxifloxacin loading/release profiles. All co-doped MSNs revealed the formation of hydroxycarbonate apatite on their surface after immersion in simulated body fluid (SBF) and promoted mitochondrial activity and cell proliferation.
Collapse
Affiliation(s)
- Georgia K. Pouroutzidou
- School of Physics, Faculty of Sciences, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (G.K.P.); (I.T.)
| | - Liliana Liverani
- Department of Materials Science and Engineering, Institute of Biomaterials, University of Erlangen-Nuremberg, 91058 Erlangen, Germany; (L.L.); (A.R.B.)
| | - Anna Theocharidou
- School of Dentistry, Faculty of Health Sciences, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (A.T.); (A.B.)
| | - Ioannis Tsamesidis
- School of Physics, Faculty of Sciences, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (G.K.P.); (I.T.)
- Pharmadev, UMR 152, Université de Toulouse, IRD, UPS, 31400 Toulouse, France
| | - Maria Lazaridou
- School of Chemistry, Faculty of Sciences, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (M.L.); (E.C.); (C.P.); (K.S.T.); (D.N.B.)
| | - Evi Christodoulou
- School of Chemistry, Faculty of Sciences, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (M.L.); (E.C.); (C.P.); (K.S.T.); (D.N.B.)
| | - Anastasia Beketova
- School of Dentistry, Faculty of Health Sciences, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (A.T.); (A.B.)
| | - Christina Pappa
- School of Chemistry, Faculty of Sciences, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (M.L.); (E.C.); (C.P.); (K.S.T.); (D.N.B.)
| | - Konstantinos S. Triantafyllidis
- School of Chemistry, Faculty of Sciences, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (M.L.); (E.C.); (C.P.); (K.S.T.); (D.N.B.)
- Center for Interdisciplinary Research and Innovation (CIRI-AUTH), Balkan Center, 57001 Thessaloniki, Greece
| | - Antonios D. Anastasiou
- Department of Chemical Engineering and Analytical Science, University of Manchester, Manchester M1 3AL, UK;
| | - Lambrini Papadopoulou
- School of Geology, Faculty of Sciences, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece;
| | - Dimitrios N. Bikiaris
- School of Chemistry, Faculty of Sciences, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (M.L.); (E.C.); (C.P.); (K.S.T.); (D.N.B.)
| | - Aldo R. Boccaccini
- Department of Materials Science and Engineering, Institute of Biomaterials, University of Erlangen-Nuremberg, 91058 Erlangen, Germany; (L.L.); (A.R.B.)
| | - Eleana Kontonasaki
- School of Dentistry, Faculty of Health Sciences, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (A.T.); (A.B.)
- Center for Interdisciplinary Research and Innovation (CIRI-AUTH), Balkan Center, 57001 Thessaloniki, Greece
| |
Collapse
|
7
|
Taweekarn T, Wongniramaikul W, Limsakul W, Sriprom W, Phawachalotorn C, Choodum A. A novel colorimetric sensor based on modified mesoporous silica nanoparticles for rapid on-site detection of nitrite. Mikrochim Acta 2020; 187:643. [PMID: 33155149 DOI: 10.1007/s00604-020-04620-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Accepted: 10/21/2020] [Indexed: 11/27/2022]
Abstract
A novel colorimetric sheet based on Griess reagent-doped mesoporous silica nanoparticles was developed for nitrite detection. Griess reagent was adsorbed on long-range ordered hexagonal mesoporous silica nanoparticles and developed ink-bottle pores with some disorder. When the modified nanoparticles were bound using starch to fabricate a thin (~ 313 μm) colorimetric sheet, spherical particles with a rougher surface and some distortion of their mesoporosity were observed. The sheet was used in conjunction with digital image colorimetry (DIC) and provides a wide linear range of 0.05 to 2.50 mg L-1 with a low detection limit (15.0 μg L-1-NO2-, equal to 4.5 μg L-1 NO2--N), good inter-day precision (1.93%RSD), and excellent precision (2.67% relative error). The colorimetric sensors produced from the sheet costs only 0.04 USD each, while the DIC uses a standard smartphone for photographic detection. The method developed offers an easier and cheaper means of conducting rapid on-site determination of nitrite in water with reliable quantitative results. Graphical abstract.
Collapse
Affiliation(s)
- Tarawee Taweekarn
- Integrated Science and Technology Research Center, Faculty of Technology and Environment, Prince of Songkla University, Phuket Campus, Kathu, Phuket, 83120, Thailand
| | - Worawit Wongniramaikul
- Integrated Science and Technology Research Center, Faculty of Technology and Environment, Prince of Songkla University, Phuket Campus, Kathu, Phuket, 83120, Thailand
- Research Program: The Development of Management System for Reduction and Control of Water Contamination and Distribution in Songkhla Lake Basin and the Western Coastline of the South of Thailand, Center of Excellence on Hazardous Substance Management (HSM), 10330, Bangkok, Thailand
| | - Wadcharawadee Limsakul
- Integrated Science and Technology Research Center, Faculty of Technology and Environment, Prince of Songkla University, Phuket Campus, Kathu, Phuket, 83120, Thailand
| | - Wilasinee Sriprom
- Integrated Science and Technology Research Center, Faculty of Technology and Environment, Prince of Songkla University, Phuket Campus, Kathu, Phuket, 83120, Thailand
| | - Chanadda Phawachalotorn
- Department of Applied Science and Business Management, King Mongkut's Institute of Technology Ladkrabang, Prince of Chumphon Campus, Pathiu, Chumphon, 86160, Thailand
| | - Aree Choodum
- Integrated Science and Technology Research Center, Faculty of Technology and Environment, Prince of Songkla University, Phuket Campus, Kathu, Phuket, 83120, Thailand.
| |
Collapse
|