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Ghafari N, Paimard G, Sadeghi E, Choobkar N, Lalabadi M. Evaluation of nano-silica, microwave heating, and ultraviolet irradiation effects on zearalenone detoxification in sunflower oils. WORLD MYCOTOXIN J 2022. [DOI: 10.3920/wmj2021.2733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
In the present study, we report three methods of silica nanoparticles (SNPs) as adsorbent, ultraviolet (UV) irradiation, and microwave heating and evaluate their capabilities in reducing and eliminating zearalenone (ZEN). The offered method not only was used for ZEN detoxification, but also greatly enhanced the sensitivity of ZEN measurement. The aim of this study was to evaluate ZEN concentration in sunflower oil samples by high-performance liquid chromatography (HPLC) method. This method was successfully validated for sunflower oil samples while the limit of detection (LOD) method (signal-to-noise ratio of 3:1) was 0.5 μg/l. The acquired removal data with the HPLC method through SNPs were fitted well with Freundlich isotherm, denoting that the multi-layer adsorption took place on the adsorbent. The equilibrium adsorption capacity of ZEN was 61.02 μg/g in an optimum time of 240 min on SNPs. The experimental results were evaluated by the adsorption kinetic model, which specified the adsorption kinetics of ZEN on SNPs, obeying the pseudo-second order model. This model demonstrated that the sorption rate depended on the sorption capacity but not the concentration of the sorbate. Moreover, the method presented to determine ZEN based on the use of SNPs in sunflower oil was accomplished by the adsorption process. Furthermore, the removal efficiencies of ZEN by SNPs, UV irradiation, and microwave heating were compared and obtained to be 92.1, 96.22, and 37.30%, respectively for determined times. These results confirm the removal efficiency of these methods is sensitive enough to ZEN analysis in sunflower oil samples.
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Affiliation(s)
- N. Ghafari
- Department of Food Science and Technology, Faculty of Agriculture, Kermanshah Branch, Islamic Azad University, Kermanshah, Iran
| | - G. Paimard
- Research Center for Environmental Determinants of Health (RCEDH), Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - E. Sadeghi
- Research Center for Environmental Determinants of Health (RCEDH), Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - N. Choobkar
- Department of Fisheries, Faculty of Agriculture, Kermanshah Branch, Islamic Azad University, Kermanshah, Iran
| | - M.A. Lalabadi
- Research Center for Environmental Determinants of Health (RCEDH), Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
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2
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Silica Mesoporous Structures: Effective Nanocarriers in Drug Delivery and Nanocatalysts. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10217533] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The application of silica mesoporous structures in drug delivery and the removal of pollutants and organic compounds through catalytic reactions is increasing due to their unique characteristics, including high loading capacities, tunable pores, large surface areas, sustainability, and so on. This review focuses on very well-studied class of different construction mesoporous silica nano(particles), such as MCM-41, SBA-15, and SBA-16. We discuss the essential parameters involved in the synthesis of these materials with providing a diverse set of examples. In addition, the recent advances in silica mesoporous structures for drug delivery and catalytic applications are presented to fill the existing gap in the literature with providing some promising examples on this topic for the scientists in both industry and academia active in the field. Regarding the catalytic applications, mesoporous silica particles have shown some promises to remove the organic pollutants and to synthesize final products with high yields due to the ease with which their surfaces can be modified with various ligands to create appropriate interactions with target molecules. In the drug delivery process, as nanocarriers, they have also shown very good performance thanks to the easy surface functionalization but also adjustability of their porosities to providing in-vivo and in-vitro cargo delivery at the target site with appropriate rate.
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3
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Wang Z, Hanrahan MP, Kobayashi T, Perras FA, Chen Y, Engelke F, Reiter C, Purea A, Rossini AJ, Pruski M. Combining fast magic angle spinning dynamic nuclear polarization with indirect detection to further enhance the sensitivity of solid-state NMR spectroscopy. SOLID STATE NUCLEAR MAGNETIC RESONANCE 2020; 109:101685. [PMID: 32932182 DOI: 10.1016/j.ssnmr.2020.101685] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 07/24/2020] [Accepted: 07/28/2020] [Indexed: 06/11/2023]
Abstract
Dynamic nuclear polarization (DNP) and indirect detection are two commonly applied approaches for enhancing the sensitivity of solid-state NMR spectroscopy. However, their use in tandem has not yet been investigated. With the advent of low-temperature fast magic angle spinning (MAS) probes with 1.3-mm diameter rotors capable of MAS at 40 kHz it becomes feasible to combine these two techniques. In this study, we performed DNP-enhanced 2D indirectly detected heteronuclear correlation (idHETCOR) experiments on 13C, 15N, 113Cd and 89Y nuclei in functionalized mesoporous silica, CdS nanoparticles, and Y2O3 nanoparticles. The sensitivity of the 2D idHETCOR experiments was compared with those of DNP-enhanced directly-detected 1D cross polarization (CP) and 2D HETCOR experiments performed with a standard 3.2-mm rotor. Due to low CP polarization transfer efficiencies and large proton linewidth, the sensitivity gains achieved by indirect detection alone were lower than in conventional (non-DNP) experiments. Nevertheless, despite the smaller sample volume the 2D idHETCOR experiments showed better absolute sensitivities than 2D HETCOR experiments for nuclei with the lowest gyromagnetic ratios. For 89Y, 2D idHETCOR provided 8.2 times better sensitivity than the 1 D89Y-detected CP experiment performed with a 3.2-mm rotor.
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Affiliation(s)
- Zhuoran Wang
- U.S. DOE Ames Laboratory, Iowa State University, Ames, IA, 50011-3020, United States; Department of Chemistry, Iowa State University, Ames, IA, 50011-3020, United States
| | - Michael P Hanrahan
- U.S. DOE Ames Laboratory, Iowa State University, Ames, IA, 50011-3020, United States; Department of Chemistry, Iowa State University, Ames, IA, 50011-3020, United States
| | - Takeshi Kobayashi
- U.S. DOE Ames Laboratory, Iowa State University, Ames, IA, 50011-3020, United States
| | - Frédéric A Perras
- U.S. DOE Ames Laboratory, Iowa State University, Ames, IA, 50011-3020, United States
| | - Yunhua Chen
- U.S. DOE Ames Laboratory, Iowa State University, Ames, IA, 50011-3020, United States; Department of Chemistry, Iowa State University, Ames, IA, 50011-3020, United States
| | | | | | - Armin Purea
- Bruker Biospin, 76287, Rheinstetten, Germany
| | - Aaron J Rossini
- U.S. DOE Ames Laboratory, Iowa State University, Ames, IA, 50011-3020, United States; Department of Chemistry, Iowa State University, Ames, IA, 50011-3020, United States.
| | - Marek Pruski
- U.S. DOE Ames Laboratory, Iowa State University, Ames, IA, 50011-3020, United States; Department of Chemistry, Iowa State University, Ames, IA, 50011-3020, United States.
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4
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Zhang Y, Lu R, Chen M, Zhou S, Zhang D, Han H, Zhang M, Qiu H. A highly efficient acyl-transfer approach to urea-functionalized silanes and their immobilization onto silica gel as stationary phases for liquid chromatography. J Chromatogr A 2020; 1626:461366. [DOI: 10.1016/j.chroma.2020.461366] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 06/18/2020] [Accepted: 06/22/2020] [Indexed: 10/24/2022]
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5
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Salinas Y, Brüggemann O, Monkowius U, Teasdale I. Visible Light Photocleavable Ruthenium-Based Molecular Gates to Reversibly Control Release from Mesoporous Silica Nanoparticles. NANOMATERIALS 2020; 10:nano10061030. [PMID: 32481603 PMCID: PMC7352806 DOI: 10.3390/nano10061030] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 05/22/2020] [Accepted: 05/25/2020] [Indexed: 12/15/2022]
Abstract
Herein we present hybrid mesoporous silica nanomaterials (MSN) with visible light-sensitive ruthenium complexes acting as gates. Two different [Ru(bpy)2L1L2]2+ complexes were investigated by grafting [Ru(bpy)2(4AMP)2](PF6)2 (RC1) and [Ru(bpy)2(PPh3)Cl]Cl (RC2) via two or one ligands onto the surface of mesoporous silica nanoparticles (MSNs), to give MSN1-RC1 and MSN2-RC2, respectively. The pores were previously loaded with a common dye, safranin O, and release studies were conducted. The number and position of the ligands were shown to influence the photocages behavior and thus the release of the cargo. Release studies from MSN1-RC1 in acetonitrile showed that in the dark the amount of dye released was minimal after 300 min, whereas a significant increase was measured upon visible light irradiation (ca. 90%). While successful as a photochemically-controlled gated system, RC1 was restricted to organic solvents since it required cleavage of two ligands in order to be cleaved from the surface, and in water only one is cleaved. Release studies from the second nanomaterial MSN2-RC2, where the complex RC2 was bound to the MSN via only one ligand, showed stability under darkness and in aqueous solution up to 180 min and, rapid release of the dye when irradiated with visible light. Furthermore, this system was demonstrated to be reversible, since, upon heating to 80 °C, the system could effectively re-close the pores and re-open it again upon visible light irradiation. This work, thus, demonstrates the potential reversible gate mechanism of the ruthenium-gated nanomaterials upon visible light irradiation, and could be envisioned as a future design of photochemically-driven drug delivery nanosystems or on/off switches for nanorelease systems.
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Affiliation(s)
- Yolanda Salinas
- Institute of Polymer Chemistry, Johannes Kepler University Linz, Altenberger Straße 69, 4040 Linz, Austria; (O.B.); (I.T.)
- Correspondence: ; Tel.: +43-732-2468-9075
| | - Oliver Brüggemann
- Institute of Polymer Chemistry, Johannes Kepler University Linz, Altenberger Straße 69, 4040 Linz, Austria; (O.B.); (I.T.)
| | - Uwe Monkowius
- Linz School of Education, Johannes Kepler University Linz, Altenberger Straße 69, 4040 Linz, Austria;
| | - Ian Teasdale
- Institute of Polymer Chemistry, Johannes Kepler University Linz, Altenberger Straße 69, 4040 Linz, Austria; (O.B.); (I.T.)
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6
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Atorvastatin-loaded SBA-16 nanostructures: Synthesis, physical characterization, and biochemical alterations in hyperlipidemic rats. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.127296] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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7
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Zhu C, Tang H, Yang K, Wu X, Luo Y, Wang J, Li Y. A urea-containing metal-organic framework as a multifunctional heterogeneous hydrogen bond-donating catalyst. CATAL COMMUN 2020. [DOI: 10.1016/j.catcom.2019.105837] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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8
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Croissant JG, Brinker CJ. Biodegradable Silica-Based Nanoparticles: Dissolution Kinetics and Selective Bond Cleavage. Enzymes 2018; 43:181-214. [PMID: 30244807 DOI: 10.1016/bs.enz.2018.07.008] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Silica-based nanomaterials are extensively used in industrial applications and academic biomedical research, thus properly assessing their toxicity and biodegradability is essential for their safe and effective formulation and use. Unfortunately, there is often a lot of confusion in the literature with respect to the toxicity and biodegradability of silica since various studies have yielded contradictory results. In this contribution, we first endeavor to underscore that the simplistic model of silica should be discarded in favor of a more realistic model recognizing that all silicas are not created equal and should thus be considered in the plural as silicas and silica hybrids, which indeed hold various biocompatibility and biodegradability profiles. We then demonstrated that all silicas are-as displayed in Nature-degradable in water by dissolution, as governed by the laws of kinetics. Lastly, we explore the vast potential of tuning the degradability of silica by materials design using various silica hybrids for redox-, pH-, enzymatic-, and biochelation-mediated lysis mechanisms.
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Affiliation(s)
- Jonas G Croissant
- Chemical and Biological Engineering, University of New Mexico, Albuquerque, NM, United States; Center for Micro-Engineered Materials, Advanced Materials Laboratory, University of New Mexico, Albuquerque, NM, United States.
| | - C Jeffrey Brinker
- Chemical and Biological Engineering, University of New Mexico, Albuquerque, NM, United States; Center for Micro-Engineered Materials, Advanced Materials Laboratory, University of New Mexico, Albuquerque, NM, United States
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9
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Atashkar B, Zolfigol MA, Mallakpour S. Applications of biological urea-based catalysts in chemical processes. MOLECULAR CATALYSIS 2018. [DOI: 10.1016/j.mcat.2018.03.009] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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10
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Pérez Mayoral E, Soriano E, Calvino-Casilda V, Rojas-Cervantes M, Martín-Aranda R. Silica-based nanocatalysts in the C C and C-heteroatom bond forming cascade reactions for the synthesis of biologically active heterocyclic scaffolds. Catal Today 2017. [DOI: 10.1016/j.cattod.2017.01.048] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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11
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Croissant JG, Fatieiev Y, Khashab NM. Degradability and Clearance of Silicon, Organosilica, Silsesquioxane, Silica Mixed Oxide, and Mesoporous Silica Nanoparticles. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:1604634. [PMID: 28084658 DOI: 10.1002/adma.201604634] [Citation(s) in RCA: 391] [Impact Index Per Article: 55.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Revised: 10/13/2016] [Indexed: 05/27/2023]
Abstract
The biorelated degradability and clearance of siliceous nanomaterials have been questioned worldwide, since they are crucial prerequisites for the successful translation in clinics. Typically, the degradability and biocompatibility of mesoporous silica nanoparticles (MSNs) have been an ongoing discussion in research circles. The reason for such a concern is that approved pharmaceutical products must not accumulate in the human body, to prevent severe and unpredictable side-effects. Here, the biorelated degradability and clearance of silicon and silica nanoparticles (NPs) are comprehensively summarized. The influence of the size, morphology, surface area, pore size, and surface functional groups, to name a few, on the degradability of silicon and silica NPs is described. The noncovalent organic doping of silica and the covalent incorporation of either hydrolytically stable or redox- and enzymatically cleavable silsesquioxanes is then described for organosilica, bridged silsesquioxane (BS), and periodic mesoporous organosilica (PMO) NPs. Inorganically doped silica particles such as calcium-, iron-, manganese-, and zirconium-doped NPs, also have radically different hydrolytic stabilities. To conclude, the degradability and clearance timelines of various siliceous nanomaterials are compared and it is highlighted that researchers can select a specific nanomaterial in this large family according to the targeted applications and the required clearance kinetics.
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Affiliation(s)
- Jonas G Croissant
- Smart Hybrid Materials Laboratory (SHMs), Advanced Membranes and Porous Materials Center, King Abdullah University of Science and Technology, Thuwal, 23955, Saudi Arabia
| | - Yevhen Fatieiev
- Smart Hybrid Materials Laboratory (SHMs), Advanced Membranes and Porous Materials Center, King Abdullah University of Science and Technology, Thuwal, 23955, Saudi Arabia
| | - Niveen M Khashab
- Smart Hybrid Materials Laboratory (SHMs), Advanced Membranes and Porous Materials Center, King Abdullah University of Science and Technology, Thuwal, 23955, Saudi Arabia
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12
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Matsumoto K, Terashima T, Sugita T, Takenaka M, Sawamoto M. Amphiphilic Random Copolymers with Hydrophobic/Hydrogen-Bonding Urea Pendants: Self-Folding Polymers in Aqueous and Organic Media. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b01702] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kazuma Matsumoto
- Department
of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Takaya Terashima
- Department
of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Takanori Sugita
- Department
of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Mikihito Takenaka
- Department
of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
- RIKEN SPring-8
Center, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - Mitsuo Sawamoto
- Department
of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
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13
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Noureddine A, Gary-Bobo M, Lichon L, Garcia M, Zink JI, Wong Chi Man M, Cattoën X. Bis-clickable Mesoporous Silica Nanoparticles: Straightforward Preparation of Light-Actuated Nanomachines for Controlled Drug Delivery with Active Targeting. Chemistry 2016; 22:9624-30. [PMID: 27258427 DOI: 10.1002/chem.201600870] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Indexed: 11/10/2022]
Abstract
Bis(clickable) mesoporous silica nanospheres (ca. 100 nm) were obtained by the co-condensation of TEOS with variable amounts (2-5 % each) of two clickable organosilanes in the presence of CTAB. Such nanoparticles could be easily functionalized with two independent functions using the copper-catalyzed alkyne-azide cycloaddition (CuAAC) reaction to transform them into nanomachines bearing cancer cell targeting ligands with the ability to deliver drugs on-demand. The active targeting was made possible after anchoring folic acid by CuAAC click reaction, whereas the controlled delivery was performed by clicked azobenzene fragments. Indeed, the azobenzene groups are able to obstruct the pores of the nanoparticles in the dark whereas upon irradiation in the UV or in the blue range, their trans-to-cis photoisomerization provokes disorder in the pores, enabling the delivery of the cargo molecules. The on-command delivery was proven in solution by dye release experiments, and in vitro by doxorubicin delivery. The added value of the folic acid ligand was clearly evidenced by the difference of cell killing induced by doxorubicin-loaded nanoparticles under blue irradiation, depending on whether the particles featured the clicked folic acid ligand or not.
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Affiliation(s)
- Achraf Noureddine
- Institut Charles Gerhardt Montpellier, UMR 5253 CNRS, Université de Montpellier-ENSCM, 8, rue de l'école normale, 34296, Montpellier, France
| | - Magali Gary-Bobo
- Institut des Biomolécules Max Mousseron, UMR 5247 CNRS, Faculté de Pharmacie, Université de Montpellier, 15 Avenue Charles Flahault, 34093, Montpellier cedex 05, France
| | - Laure Lichon
- Institut des Biomolécules Max Mousseron, UMR 5247 CNRS, Faculté de Pharmacie, Université de Montpellier, 15 Avenue Charles Flahault, 34093, Montpellier cedex 05, France
| | - Marcel Garcia
- Institut des Biomolécules Max Mousseron, UMR 5247 CNRS, Faculté de Pharmacie, Université de Montpellier, 15 Avenue Charles Flahault, 34093, Montpellier cedex 05, France
| | - Jeffrey I Zink
- Department of Chemistry and Biochemistry, California NanoSystems Institute, University of California, Los Angeles, California, 90095-1569, USA
| | - Michel Wong Chi Man
- Institut Charles Gerhardt Montpellier, UMR 5253 CNRS, Université de Montpellier-ENSCM, 8, rue de l'école normale, 34296, Montpellier, France.
| | - Xavier Cattoën
- Univ. Grenoble Alpes, Inst NEEL, 38042, Grenoble, France. .,CNRS, Inst NEEL, 38042, Grenoble, France.
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15
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Borah P, Mondal J, Zhao Y. Urea–pyridine bridged periodic mesoporous organosilica: An efficient hydrogen-bond donating heterogeneous organocatalyst for Henry reaction. J Catal 2015. [DOI: 10.1016/j.jcat.2015.07.011] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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16
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Kariminezhad H, Habibi M, Mirzababayi N. Nanosized ZSM-5 will improve photodynamic therapy using Methylene blue. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2015; 148:107-112. [DOI: 10.1016/j.jphotobiol.2015.03.013] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2014] [Revised: 02/21/2015] [Accepted: 03/08/2015] [Indexed: 12/19/2022]
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17
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Nasresfahani Z, Kassaee M. Mesoporous silica nanoparticles in an efficient, solvent-free, green synthesis of acridinediones. CATAL COMMUN 2015. [DOI: 10.1016/j.catcom.2014.11.015] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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18
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Mehrasbi E, Sarrafi Y, Tajbakhsh M. Efficient synthesis of 3,3-di(indolyl)oxindoles catalyzed by sulfonic acid-functionalized mesoporous silica nanoparticles (SAMSNs) in aqueous media. RESEARCH ON CHEMICAL INTERMEDIATES 2014. [DOI: 10.1007/s11164-014-1776-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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19
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Althaus SM, Mao K, Stringer JA, Kobayashi T, Pruski M. Indirectly detected heteronuclear correlation solid-state NMR spectroscopy of naturally abundant 15N nuclei. SOLID STATE NUCLEAR MAGNETIC RESONANCE 2014; 57-58:17-21. [PMID: 24287060 DOI: 10.1016/j.ssnmr.2013.11.001] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2013] [Revised: 10/22/2013] [Accepted: 11/01/2013] [Indexed: 06/02/2023]
Abstract
Two-dimensional indirectly detected through-space and through-bond (1)H{(15)N} solid-state NMR experiments utilizing fast magic angle spinning (MAS) and homonuclear multipulse (1)H decoupling are evaluated. Remarkable efficiency of polarization transfer can be achieved at a MAS rate of 40 kHz by both cross-polarization and INEPT, which makes these methods applicable for routine characterizations of natural abundance solids. The first measurement of 2D (1)H{(15)N} HETCOR spectrum of natural abundance surface species is also reported.
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Affiliation(s)
- Stacey M Althaus
- U.S. DOE Ames Laboratory, Ames, IA 50011-3020, USA; Department of Chemistry, Iowa State University, Ames, IA 50011-3020, USA
| | - Kanmi Mao
- U.S. DOE Ames Laboratory, Ames, IA 50011-3020, USA; Department of Chemistry, Iowa State University, Ames, IA 50011-3020, USA
| | - John A Stringer
- Agilent Technologies, 900 South Taft, Loveland, CO 80537, USA
| | - Takeshi Kobayashi
- Department of Chemistry, Iowa State University, Ames, IA 50011-3020, USA
| | - Marek Pruski
- U.S. DOE Ames Laboratory, Ames, IA 50011-3020, USA; Department of Chemistry, Iowa State University, Ames, IA 50011-3020, USA.
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Rostamnia S, Doustkhah E. Nanoporous silica-supported organocatalyst: a heterogeneous and green hybrid catalyst for organic transformations. RSC Adv 2014. [DOI: 10.1039/c4ra03773a] [Citation(s) in RCA: 132] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Organically modified hybrid silica mesostructures are becoming increasingly promising candidates as catalysts for various kinds of organic reactions and green chemistry.
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Affiliation(s)
- Sadegh Rostamnia
- Organic and Nano Group (ONG)
- Department of Chemistry
- Faculty of Science
- University of Maragheh
- Maragheh, Iran
| | - Esmail Doustkhah
- Organic and Nano Group (ONG)
- Department of Chemistry
- Faculty of Science
- University of Maragheh
- Maragheh, Iran
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21
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Nazarchuk GI, Melnyk IV, Zub YL, Makridina OI, Vezentsev AI. Mesoporous silica containing ≡Si(CH2)3NHC(S)NHC2H5 functional groups in the surface layer. J Colloid Interface Sci 2013; 389:115-20. [PMID: 23031495 DOI: 10.1016/j.jcis.2012.08.057] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2012] [Revised: 08/30/2012] [Accepted: 08/31/2012] [Indexed: 11/24/2022]
Abstract
One-step synthesis technique of mesoporous SBA-15 type silica with thiourea ≡Si(CH(2))(3)NHC(S)NHC(2)H(5) groups in the surface layer was developed. According to elemental analysis, the content of surface groups is 1.25 mmol/g, which is consistent with TGA data. FT-IR spectra of the obtained sample contain characteristic absorption bands of thiourea groups (-NH-C(S)-NH-), as well as polysiloxane network (SiOSi). The synthesized sample was studied by XRD, TEM, SEM, and adsorption method. It was demonstrated that the sample features porous microspheres ~0.5 μm with well-ordered internal spatial structure of the hexagonal lattice type due to the usage of template P123 during synthesis. According to XRD and TEM, the diameter of pores is 4.2-5 nm and the wall thickness between them is 2.6 nm. These data are consistent with the structural-adsorption characteristics calculated from nitrogen adsorption-desorption isotherms: S(sp.)=510 m(2)/g, V(s)=0.47 cm(3)/g, and d=4.3 nm. Equilibrium is established within 60 min during sorption of silver(І) and mercury(ІІ) ions from acidified aqueous solutions for this sample, and with the complexes are formed 1.1/1 for Ag(+) and 0.8/1 for Hg(2+) at metal/ligand ratio.
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Affiliation(s)
- Galyna I Nazarchuk
- Chuiko Institute of Surface Chemistry, National Academy of Sciences of Ukraine, Kyiv 03164, Ukraine.
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Well-Ordered Mesoporous Silica Nanoparticles as a Recoverable Catalyst for One-Pot Multicomponent Synthesis of 4H-Chromene Derivatives. CHINESE JOURNAL OF CATALYSIS 2012. [DOI: 10.1016/s1872-2067(11)60423-3] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Zhao Y, Lin LN, Lu Y, Gao HL, Chen SF, Yang P, Yu SH. Synthesis of tunable theranostic Fe3O4 @mesoporous silica nanospheres for biomedical applications. Adv Healthc Mater 2012. [PMID: 23184749 DOI: 10.1002/adhm.201200005] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yang Zhao
- Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at Microscale Department of Chemistry, the National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui 230026, PR China
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Malti WE, Mongin O, Blanchard-Desce M, Raehm L, Durand JO. Functionalisation of mesoporous silica nanoparticles with 3-isocynatopropyltrichlorosilane. CR CHIM 2011. [DOI: 10.1016/j.crci.2011.09.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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26
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Tan B, Hernández-Torres G, Barbas CF. Highly Efficient Hydrogen-Bonding Catalysis of the Diels–Alder Reaction of 3-Vinylindoles and Methyleneindolinones Provides Carbazolespirooxindole Skeletons. J Am Chem Soc 2011; 133:12354-7. [DOI: 10.1021/ja203812h] [Citation(s) in RCA: 329] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Bin Tan
- The Skaggs Institute for Chemical Biology and Departments of Chemistry and Molecular Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Gloria Hernández-Torres
- The Skaggs Institute for Chemical Biology and Departments of Chemistry and Molecular Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
- Departamento de Química Orgánica, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain
| | - Carlos F. Barbas
- The Skaggs Institute for Chemical Biology and Departments of Chemistry and Molecular Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
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Liu DJ, Wang J, Ackerman DM, Slowing II, Pruski M, Chen HT, Lin VSY, Evans JW. Interplay between Anomalous Transport and Catalytic Reaction Kinetics in Single-File Nanoporous Systems. ACS Catal 2011. [DOI: 10.1021/cs200115c] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Da-Jiang Liu
- Ames Laboratory−USDOE, and ‡Departments of Mathematics, §Chemistry, and ∥Physics & Astronomy, Iowa State University, Ames Iowa 50011, United States
| | - Jing Wang
- Ames Laboratory−USDOE, and ‡Departments of Mathematics, §Chemistry, and ∥Physics & Astronomy, Iowa State University, Ames Iowa 50011, United States
| | - David M. Ackerman
- Ames Laboratory−USDOE, and ‡Departments of Mathematics, §Chemistry, and ∥Physics & Astronomy, Iowa State University, Ames Iowa 50011, United States
| | - Igor I. Slowing
- Ames Laboratory−USDOE, and ‡Departments of Mathematics, §Chemistry, and ∥Physics & Astronomy, Iowa State University, Ames Iowa 50011, United States
| | - Marek Pruski
- Ames Laboratory−USDOE, and ‡Departments of Mathematics, §Chemistry, and ∥Physics & Astronomy, Iowa State University, Ames Iowa 50011, United States
| | - Hung-Ting Chen
- Ames Laboratory−USDOE, and ‡Departments of Mathematics, §Chemistry, and ∥Physics & Astronomy, Iowa State University, Ames Iowa 50011, United States
| | - Victor S.-Y. Lin
- Ames Laboratory−USDOE, and ‡Departments of Mathematics, §Chemistry, and ∥Physics & Astronomy, Iowa State University, Ames Iowa 50011, United States
| | - James W. Evans
- Ames Laboratory−USDOE, and ‡Departments of Mathematics, §Chemistry, and ∥Physics & Astronomy, Iowa State University, Ames Iowa 50011, United States
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Gleeson O, Davies GL, Peschiulli A, Tekoriute R, Gun'ko YK, Connon SJ. The immobilisation of chiral organocatalysts on magnetic nanoparticles: the support particle cannot always be considered inert. Org Biomol Chem 2011; 9:7929-40. [DOI: 10.1039/c1ob06110k] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Zhu R, Shen J, Wei Y, Zhang F. Urea-functionalized mesoporous polymeric catalyst: a cooperative effect between support and secondary amine on water-medium Knoevenagel reactions. NEW J CHEM 2011. [DOI: 10.1039/c1nj20030e] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Moitra N, Trens P, Raehm L, Durand JO, Cattoën X, Chi Man MW. Facile route to functionalized mesoporous silica nanoparticles by click chemistry. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c1jm12066b] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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