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Barczak M, Pietras-Ożga D, Seliem MK, de Falco G, Giannakoudakis DA, Triantafyllidis K. Mesoporous Silicas Obtained by Time-Controlled Co-Condensation: A Strategy for Tuning Structure and Sorption Properties. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2065. [PMID: 37513076 PMCID: PMC10385985 DOI: 10.3390/nano13142065] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 07/07/2023] [Accepted: 07/07/2023] [Indexed: 07/30/2023]
Abstract
Mesoporous silicas synthesized by the co-condensation of two and three different silica monomers were synthesized by varying the time intervals between the addition of individual monomers, while the total time interval was kept constant. This resulted in different structural properties of the final silicas, particularly in their porosity and local ordering. One of the obtained samples exhibited an unusual isotherm with two hysteresis loops and its total pore volume was as high as 2.2 cm3/g. In addition, to be thoroughly characterized by a wide range of instrumental techniques, the obtained materials were also employed as the adsorbents and release platforms of a diclofenac sodium (DICL; used here as a model drug). In the case of DICL adsorption and release, differences between the samples were also revealed, which confirms the fact that time control of a monomer addition can be successfully used to fine-tune the properties of organo-silica materials.
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Affiliation(s)
- Mariusz Barczak
- Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Sklodowska University, Maria Curie-Sklodowska Sq. 3, 20-031 Lublin, Poland
| | - Dorota Pietras-Ożga
- Department of Epizootiology and Clinic of Infectious Diseases, Faculty of Veterinary Medicine, University of Life Sciences of Lublin, 20-612 Lublin, Poland
| | - Moaaz K Seliem
- Faculty of Earth Science, Beni-Suef University, Beni Suef 2722165, Beni Suef Governorate, Egypt
| | - Giacomo de Falco
- New Jersey Department of Environmental Protection, Trenton, NJ 08625, USA
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Liu B, Li H, Quan K, Chen J, Qiu H. Periodic mesoporous organosilica for chromatographic stationary phases: From synthesis strategies to applications. Trends Analyt Chem 2023. [DOI: 10.1016/j.trac.2022.116895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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3
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Synthesis of (E)-2-(1H-tetrazole-5-yl)-3-phenylacrylenenitrile derivatives catalyzed by new ZnO nanoparticles embedded in a thermally stable magnetic periodic mesoporous organosilica under green conditions. Sci Rep 2022; 12:10723. [PMID: 35750767 PMCID: PMC9232489 DOI: 10.1038/s41598-022-13011-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2021] [Accepted: 05/19/2022] [Indexed: 11/20/2022] Open
Abstract
ZnO nanoparticles embedded in a magnetic isocyanurate-based periodic mesoporous organosilica (Fe3O4@PMO–ICS–ZnO) were prepared through a modified environmentally-benign procedure for the first time and properly characterized by appropriate spectroscopic and analytical methods or techniques used for mesoporous materials. The new thermally stable Fe3O4@PMO–ICS–ZnO nanomaterial with proper active sites and surface area as well as uniform particle size was investigated for the synthesis of medicinally important tetrazole derivatives through cascade condensation and concerted 1,3-cycloaddition reactions as a representative of the Click Chemistry concept. The desired 5-substituted-1H-tetrazole derivatives were smoothly prepared in high to quantitative yields and good purity in EtOH under reflux conditions. Low catalyst loading, short reaction time and the use of green solvents such as EtOH and water instead of carcinogenic DMF as well as easy separation and recyclability of the catalyst for at least five consecutive runs without significant loss of its activity are notable advantages of this new protocol compared to other recent introduced procedures.
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Muir B, Sobczyk M, Bajda T. Fundamental features of mesoporous functional materials influencing the efficiency of removal of VOCs from aqueous systems: A review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 784:147121. [PMID: 34088064 DOI: 10.1016/j.scitotenv.2021.147121] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2020] [Revised: 03/26/2021] [Accepted: 04/09/2021] [Indexed: 06/12/2023]
Abstract
Volatile organic compounds (VOCs) are harmful contaminants that are emitted into the environment as a result of various commercial, industrial, and domestic practices. Their presence in water leads to pollution and poses a huge threat to the ecological environment and human health. They are typically released into the environment through a spill or inappropriate disposal which allows the chemicals to get absorbed into the ground or enter the sewage system. Thus far, several treatment methods have been developed to remove VOCs from water, including steam stripping or air stripping, ion exchange, filtration, adsorption, and application of various types of sorbents. Due to their cost-effectiveness and efficiency, the use of mesoporous materials, especially those synthesized from coal fly ash (FA), is recognized as the most promising strategy for slowing down the impact of VOCs. This study is believed to be the first to assess the advances made in improving the adsorption of VOCs by different functional mesoporous materials (FA, zeolites, mesoporous silica, metal organic frameworks). The impact associated with the properties of these materials is carefully summarized in this paper, in regard to their solid-state characteristics, material synthesis method, and surface modification. In addition, their chemical and physical interactions in solution, the reaction kinetics, and the influence of temperature and pH are described in detail. The aim of this work was to compare the sorption properties of the materials synthesized from FA with more complex mesoporous materials. This overview provides a comprehensive understanding of VOC removal from water systems using various functional materials, as well as helps in identifying the materials that may play a key role in the future.
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Affiliation(s)
- Barbara Muir
- AGH University of Science and Technology, Faculty of Geology, Geophysics and Environmental Protection, al. A. Mickiewicza 30, 30-059 Kraków, Poland.
| | - Maciej Sobczyk
- AGH University of Science and Technology, Faculty of Geology, Geophysics and Environmental Protection, al. A. Mickiewicza 30, 30-059 Kraków, Poland
| | - Tomasz Bajda
- AGH University of Science and Technology, Faculty of Geology, Geophysics and Environmental Protection, al. A. Mickiewicza 30, 30-059 Kraków, Poland
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5
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Daneshjou S, Dabirmanesh B, Rahimi F, Jabbari S, Khajeh K. Catalytic parameters and thermal stability of chondroitinase ABCI on red porous silicon nanoparticles. J Biotechnol 2020; 324:83-90. [PMID: 32979433 DOI: 10.1016/j.jbiotec.2020.09.020] [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] [Received: 01/15/2020] [Revised: 08/02/2020] [Accepted: 09/21/2020] [Indexed: 12/21/2022]
Abstract
The bacterial enzyme chondroitinase ABC, which digests extracellular chondroitin sulfate proteoglycans, has been shown to enhance axonal regeneration. However, the utilization of this enzyme as therapeutics is notably restricted due to its thermal instability. Therefore, red luminescent porous silicon that hold promise for potential applications in biological/medical imaging was used as a carrying matrix for chondroitinase with the aim of enhancing its stability. Porous Si nanoparticles were prepared by electrochemical etching of silicon wafers in ethanolic HF solution. The size of nanoparticles (210 nm) and the mean pore diameter (8 -20 nm) were determined using dynamic light scattering and scanning electron microscopy. Purified chondroitinase was then incorporated into the silicon pores. Results revealed similar Km and lower Vmax value for the immobilized enzyme when compared with the free enzyme. The immobilized chondroitinase exhibited about a 4 fold increase in stability at 37 °C after 50 min. It is likely possible that, the enzyme was protected inside the pores resulted in higher stability. Moreover, porous silicon was seen to be capable of holding the chondroitinase for repeated cyclic tests for three times. The cell viability assay exhibited no significant cytotoxicity for Psi-chondroitinase up to 24 h.
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Affiliation(s)
- Sara Daneshjou
- Tarbiat Modares University, Faculty of Biological Science, Tehran, Iran.
| | | | - Fereshteh Rahimi
- University of Tehran, Faculty of New Sciences and Technologies, Tehran, Iran
| | - Safoura Jabbari
- Tarbiat Modares University, Faculty of Biological Science, Tehran, Iran
| | - Khosro Khajeh
- Tarbiat Modares University, Faculty of Biological Science, Tehran, Iran
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Kasinathan P, Lang C, Gaigneaux EM, Jonas AM, Fernandes AE. Influence of Site Pairing in Hydrophobic Silica-Supported Sulfonic Acid Bifunctional Catalysts. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:13743-13751. [PMID: 33170709 DOI: 10.1021/acs.langmuir.0c01759] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Imparting hydrophobicity to solid acid catalysts is critical to regulating their performances by allowing the creation of a less polar environment and improved partitioning of the reactants. Here we present different approaches for the preparation of silica-based catalysts comprising sulfonic acid (-SO3H) sites and hydrophobic decyl (-C10) chains by either simultaneous or sequential postfunctionalization of an azide-functionalized mesoporous silica platform. This set of hybrid bifunctional catalysts is compared in the model esterification of octanol with acetic acid, and the influence of the preparation methods together with the resulting site spatial distribution is discussed. In parallel, we show that pairing the two functional groups affords a maximum synergistic effect compared to more traditional mixed catalysts with random distributions of acid and hydrophobic functions.
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Affiliation(s)
- Palraj Kasinathan
- Institute of Condensed Matter and Nanosciences, Bio- and Soft Matter, Université catholique de Louvain, 1348 Louvain-la-Neuve, Belgium
| | - Charlotte Lang
- Institute of Condensed Matter and Nanosciences, Bio- and Soft Matter, Université catholique de Louvain, 1348 Louvain-la-Neuve, Belgium
| | - Eric M Gaigneaux
- Institute of Condensed Matter and Nanosciences, Bio- and Soft Matter, Université catholique de Louvain, 1348 Louvain-la-Neuve, Belgium
| | - Alain M Jonas
- Institute of Condensed Matter and Nanosciences, Bio- and Soft Matter, Université catholique de Louvain, 1348 Louvain-la-Neuve, Belgium
| | - Antony E Fernandes
- Institute of Condensed Matter and Nanosciences, Bio- and Soft Matter, Université catholique de Louvain, 1348 Louvain-la-Neuve, Belgium
- Certech, Rue Jules Bordet 45, 7180 Seneffe, Belgium
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Chinnathambi S, Tamanoi F. Recent Development to Explore the Use of Biodegradable Periodic Mesoporous Organosilica (BPMO) Nanomaterials for Cancer Therapy. Pharmaceutics 2020; 12:E890. [PMID: 32961990 PMCID: PMC7558858 DOI: 10.3390/pharmaceutics12090890] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 09/12/2020] [Accepted: 09/15/2020] [Indexed: 01/04/2023] Open
Abstract
Porous nanomaterials can be used to load various anti-cancer drugs efficiently and deliver them to a particular location in the body with minimal toxicity. Biodegradable periodic mesoporous organosilica nanoparticles (BPMOs) have recently emerged as promising candidates for disease targeting and drug delivery. They have a large functional surface and well-defined pores with a biodegradable organic group framework. Multiple biodegradation methods have been explored, such as the use of redox, pH, enzymatic activity, and light. Various drug delivery systems using BPMO have been developed. This review describes recent advances in the biomedical application of BPMOs.
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Affiliation(s)
- Shanmugavel Chinnathambi
- Institute for Integrated Cell-Material Sciences, Institute for Advanced Study, Kyoto University, Kyoto 606-8501, Japan;
| | - Fuyuhiko Tamanoi
- Institute for Integrated Cell-Material Sciences, Institute for Advanced Study, Kyoto University, Kyoto 606-8501, Japan;
- Department of Microbio., Immunol. & Molec. Genet., University of California, Los Angeles, CA 90095, USA
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8
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Lv M, Xin Q, Bian B, Yu S, Liu S, Li L, Xie C, Liu Y. One-pot synthesis of highly active and hydrothermally stable Pd@mHSiO 2 yolk-shell-structured nanoparticles for high-temperature reactions in hydrothermal environments. Dalton Trans 2020; 49:418-430. [PMID: 31833506 DOI: 10.1039/c9dt04293h] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The facile synthesis of yolk-shell-structured nanoparticles (YSNPs) with mobile active metal cores and mesoporous inorganic-organic hybrid silica shells (mHSiO2) is important for their applications. In this work, Pd@mHSiO2 YSNPs have been synthesized in aqueous solution at 95 °C by a one-pot method without the need for extensive purification and separation steps. The method is simple and facile, and ingeniously combines the controlled synthesis of Pd nanocubes, coating of mesoporous silica, and transition from core-shell-structured nanoparticles (CSNPs) to YSNPs. 29Si NMR spectroscopy, FTIR spectroscopy, and detailed control experiments have demonstrated that the incorporation of 1,2-bis(trimethoxysilyl)ethane (BTME) modifies the degree of condensation between the outer hybrid silica layer and the inner pure silica section, and that high temperature water is really responsible for dissolving the inner pure silica layer leading to a transition from the CSNPs to the YSNPs. The obtained Pd@mHSiO2 YSNPs have a controllable diameter, tunable shell thickness, a high specific surface area, and uniform mesoporosity. Thermal stability tests have indicated that the Pd@mHSiO2 YSNPs are remarkably stable at high temperatures up to 650 °C. Importantly, the Pd@mHSiO2 YSNPs exhibit a much higher catalytic activity and hydrothermal stability than Pd@mSiO2 CSNPs or Pd/mHSiO2 NSs in the conversion of levulinic acid (LA) into γ-valerolactone (GVL), because the hollow voids provide low mass-transfer resistance and improve the accessibility of the catalytic sites, and the incorporation of organic groups enhances the hydrothermal stability of the outer shell.
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Affiliation(s)
- Mingxin Lv
- State Key Laboratory Base of Eco-chemical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, 53 Zhengzhou Road, Qingdao 266042, People's Republic of China.
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9
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Renom-Carrasco M, Mania P, Sayah R, Veyre L, Occhipinti G, Gajan D, Lesage A, Jensen VR, Thieuleux C. Supported Ru olefin metathesis catalysts via a thiolate tether. Dalton Trans 2019; 48:2886-2890. [DOI: 10.1039/c8dt04592e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Ruthenium alkylidene complexes can be successfully immobilized on hybrid mesostructured silica via thiolate tethers to give heterogeneous, thiolate-coordinated olefin metathesis catalysts.
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Affiliation(s)
- Marc Renom-Carrasco
- University of Lyon
- Institute of Chemistry of Lyon
- Laboratory C2P2 UMR 5265-CNRS-University Lyon 1-CPE Lyon
- 69616 Villeurbanne
- France
| | - Philipp Mania
- University of Lyon
- Institute of Chemistry of Lyon
- Laboratory C2P2 UMR 5265-CNRS-University Lyon 1-CPE Lyon
- 69616 Villeurbanne
- France
| | - Reine Sayah
- University of Lyon
- Institute of Chemistry of Lyon
- Laboratory C2P2 UMR 5265-CNRS-University Lyon 1-CPE Lyon
- 69616 Villeurbanne
- France
| | - Laurent Veyre
- University of Lyon
- Institute of Chemistry of Lyon
- Laboratory C2P2 UMR 5265-CNRS-University Lyon 1-CPE Lyon
- 69616 Villeurbanne
- France
| | | | - David Gajan
- Institut des Sciences Analytiques UMR 5280 (CNRS/Université Lyon 1/ENS Lyon)
- Université de Lyon
- Centre de RMN à Très Hauts Champs
- 69100 Villeurbanne
- France
| | - Anne Lesage
- Institut des Sciences Analytiques UMR 5280 (CNRS/Université Lyon 1/ENS Lyon)
- Université de Lyon
- Centre de RMN à Très Hauts Champs
- 69100 Villeurbanne
- France
| | - Vidar R. Jensen
- Department of Chemistry
- University of Bergen
- N-5007 Bergen
- Norway
| | - Chloé Thieuleux
- University of Lyon
- Institute of Chemistry of Lyon
- Laboratory C2P2 UMR 5265-CNRS-University Lyon 1-CPE Lyon
- 69616 Villeurbanne
- France
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10
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Synthesis of enhanced phosphonic functional groups mesoporous silica for uranium selective adsorption from aqueous solutions. Sci Rep 2017; 7:11675. [PMID: 28916797 PMCID: PMC5601954 DOI: 10.1038/s41598-017-11993-5] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Accepted: 08/29/2017] [Indexed: 11/08/2022] Open
Abstract
Enhanced phosphonic functional group (PFG)-based mesoporous silicas (MSs) were synthesized by hydrothermal method for uranium [U(VI)] selective adsorption from aqueous solutions. Considering that PFGs are directly related to U(VI) adsorption, the main idea of this research was to synthesize enhanced PFG-MSs and consequently enhance U(VI) adsorption. We synthesized two kinds of MSs based on acetic and phosphoric acids at weakly acidic pH, which allows high-loading phosphonic functionality. The main sodium and phosphonic functionality sources were sodium metasilicate and diethylphosphatoethyltriethoxysilane (DPTS). Adsorption experiment results exhibit enhanced U(VI) adsorption capacity from 55.75 mg/g to 207.6 mg/g for acetic and phosphoric acids, respectively. This finding was due to the enhancement of PFGs by phosphoric acids. The highest adsorption selectivity was 79.82% for U(VI) among the six different elements, including Pb, As, Cu, Mo, Ni, and K. Structural characterization of the samples was performed by Fourier transform infrared, X-ray diffraction, scanning electron microscopy, energy-dispersive X-ray spectroscopy, and Brunauer-Emmett-Teller analysis methods. Element concentrations were measured by inductively coupled plasma optical emission spectrometry. Several parameters affecting adsorption capacity, including pH, contact time, initial U(VI) concentration and solution volume, and adsorbent concentration, were also investigated.
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Albela B, Bonneviot L. Surface molecular engineering in the confined space of templated porous silica. NEW J CHEM 2016. [DOI: 10.1039/c5nj03437j] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Recent developments in molecular surface engineering inside the confined space of porous materials are surveyed including a new nomenclature proposal.
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Affiliation(s)
- Belén Albela
- Laboratoire de Chimie
- Ecole Normale Supérieure de Lyon
- University of Lyon
- Lyon Cedex-07
- France
| | - Laurent Bonneviot
- Laboratoire de Chimie
- Ecole Normale Supérieure de Lyon
- University of Lyon
- Lyon Cedex-07
- France
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12
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Etienne M, Zhang L, Vilà N, Walcarius A. Mesoporous Materials-Based Electrochemical Enzymatic Biosensors. ELECTROANAL 2015. [DOI: 10.1002/elan.201500172] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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13
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Gutmann T, Liu J, Rothermel N, Xu Y, Jaumann E, Werner M, Breitzke H, Sigurdsson ST, Buntkowsky G. Natural abundance 15N NMR by dynamic nuclear polarization: fast analysis of binding sites of a novel amine-carboxyl-linked immobilized dirhodium catalyst. Chemistry 2015; 21:3798-805. [PMID: 25620003 DOI: 10.1002/chem.201405043] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2014] [Indexed: 11/05/2022]
Abstract
A novel heterogeneous dirhodium catalyst has been synthesized. This stable catalyst is constructed from dirhodium acetate dimer (Rh2(OAc)4) units, which are covalently linked to amine- and carboxyl-bifunctionalized mesoporous silica (SBA-15-NH2-COOH). It shows good efficiency in catalyzing the cyclopropanation reaction of styrene and ethyl diazoacetate (EDA) forming cis- and trans-1-ethoxycarbonyl-2-phenylcyclopropane. To characterize the structure of this catalyst and to confirm the successful immobilization, heteronuclear solid-state NMR experiments have been performed. The high application potential of dynamic nuclear polarization (DNP) NMR for the analysis of binding sites in this novel catalyst is demonstrated. Signal-enhanced (13)C CP MAS and (15)N CP MAS techniques have been employed to detect different carboxyl and amine binding sites in natural abundance on a fast time scale. The interpretation of the experimental chemical shift values for different binding sites has been corroborated by quantum chemical calculations on dirhodium model complexes.
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Affiliation(s)
- Torsten Gutmann
- Institute of Physical Chemistry, Technical University Darmstadt, Alarich-Weiss-Straße 8, 64287 Darmstadt (Germany).
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14
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Ding L, Su B. An electrochemistry assisted approach for fast, low-cost and gram-scale synthesis of mesoporous silica nanoparticles. RSC Adv 2015. [DOI: 10.1039/c5ra13482j] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Gram-scale mesoporous silica nanoparticles (MSNs) were prepared by a facile electrochemistry assisted sol–gel approach.
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Affiliation(s)
- Longhua Ding
- Institute of Microanalytical Systems
- Department of Chemistry
- Zhejiang University
- Hangzhou 310058
- China
| | - Bin Su
- Institute of Microanalytical Systems
- Department of Chemistry
- Zhejiang University
- Hangzhou 310058
- China
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15
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Zhan W, Lü Y, Yang L, Guo Y, Wang Y, Guo Y, Lu G. Epoxidation of vinyl functionalized cubic Ia3d mesoporous silica for immobilization of penicillin G acylase. CHINESE JOURNAL OF CATALYSIS 2014. [DOI: 10.1016/s1872-2067(14)60156-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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16
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Sahare P, Ayala M, Vazquez-Duhalt R, Agrawal V. Immobilization of peroxidase enzyme onto the porous silicon structure for enhancing its activity and stability. NANOSCALE RESEARCH LETTERS 2014; 9:409. [PMID: 25221454 PMCID: PMC4151278 DOI: 10.1186/1556-276x-9-409] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/19/2014] [Accepted: 07/08/2014] [Indexed: 06/03/2023]
Abstract
In this work, a commercial peroxidase was immobilized onto porous silicon (PS) support functionalized with 3-aminopropyldiethoxysilane (APDES) and the performance of the obtained catalytic microreactor was studied. The immobilization steps were monitored and the activity of the immobilized enzyme in the PS pores was spectrophotometrically determined. The enzyme immobilization in porous silicon has demonstrated its potential as highly efficient enzymatic reactor. The effect of a polar organic solvent (acetonitrile) and the temperature (up to 50°C) on the activity and stability of the biocatalytic microreactor were studied. After 2-h incubation in organic solvent, the microreactor retained 80% of its initial activity in contrast to the system with free soluble peroxidase that lost 95% of its activity in the same period of time. Peroxidase immobilized into the spaces of the porous silicon support would be perspective for applications in treatments for environmental security such as removal of leached dye in textile industry or in treatment of different industrial effluents. The system can be also applied in the field of biomedicine.
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Affiliation(s)
- Padmavati Sahare
- Centro de Investigacion en Ingenieria y Ciencias Aplicadas, UAEM, Av.
Universidad 1001, Cuernavaca, Morelos 62209, México
| | - Marcela Ayala
- Instituto de Biotecnología Universidad Nacional Autónoma de
México, Av. Universidad 2001, Cuernavaca, Morelos 62250,
México
| | - Rafael Vazquez-Duhalt
- Centro de Nanociencias y Nanotecnología, Universidad Nacional
Autónoma de México, Km 107 Carretera Tijuana-Ensenada, Apdo Postal
14, CP. 22800 Ensenada, B.C., México
| | - Vivechana Agrawal
- Centro de Investigacion en Ingenieria y Ciencias Aplicadas, UAEM, Av.
Universidad 1001, Cuernavaca, Morelos 62209, México
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Nicole L, Laberty-Robert C, Rozes L, Sanchez C. Hybrid materials science: a promised land for the integrative design of multifunctional materials. NANOSCALE 2014; 6:6267-6292. [PMID: 24866174 DOI: 10.1039/c4nr01788a] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
For more than 5000 years, organic-inorganic composite materials created by men via skill and serendipity have been part of human culture and customs. The concept of "hybrid organic-inorganic" nanocomposites exploded in the second half of the 20th century with the expansion of the so-called "chimie douce" which led to many collaborations between a large set of chemists, physicists and biologists. Consequently, the scientific melting pot of these very different scientific communities created a new pluridisciplinary school of thought. Today, the tremendous effort of basic research performed in the last twenty years allows tailor-made multifunctional hybrid materials with perfect control over composition, structure and shape. Some of these hybrid materials have already entered the industrial market. Many tailor-made multiscale hybrids are increasingly impacting numerous fields of applications: optics, catalysis, energy, environment, nanomedicine, etc. In the present feature article, we emphasize several fundamental and applied aspects of the hybrid materials field: bioreplication, mesostructured thin films, Lego-like chemistry designed hybrid nanocomposites, and advanced hybrid materials for energy. Finally, a few commercial applications of hybrid materials will be presented.
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Affiliation(s)
- Lionel Nicole
- Sorbonne Universités UPMC Univ Paris 06, UMR 7574, Chimie de la Matière Condensée de Paris, F-75005, Paris, France.
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Conley MP, Copéret C, Thieuleux C. Mesostructured Hybrid Organic–Silica Materials: Ideal Supports for Well-Defined Heterogeneous Organometallic Catalysts. ACS Catal 2014. [DOI: 10.1021/cs500262t] [Citation(s) in RCA: 97] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Matthew P. Conley
- ETH Zürich, Department of Chemistry and Applied Biosciences, Vladimir Prelog Weg 2, CH-8093 Zürich, Switzerland
| | - Christophe Copéret
- ETH Zürich, Department of Chemistry and Applied Biosciences, Vladimir Prelog Weg 2, CH-8093 Zürich, Switzerland
| | - Chloé Thieuleux
- Université de Lyon, Institut de Chimie de Lyon, UMR C2P2 CNRS-UCBL-ESCPE Lyon Equipe Chimie OrganoMétallique de Surface 43 Bvd, du 11 Novembre 1918, 69616 Villeurbanne, France
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20
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Maurer C, Baumgartner B, Pabisch S, Akbarzadeh J, Peterlik H, Schubert U. Porous titanium and zirconium oxo carboxylates at the interface between sol–gel and metal–organic framework structures. Dalton Trans 2014; 43:950-7. [DOI: 10.1039/c3dt51285a] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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21
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Gascón V, Díaz I, Blanco RM, Márquez-Álvarez C. Hybrid periodic mesoporous organosilica designed to improve the properties of immobilized enzymes. RSC Adv 2014. [DOI: 10.1039/c4ra05362a] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Hybrid organosilica supports synthesized with pore size adjusted to enzyme dimensions provide high stability in organic solvent systems and prevent leaching.
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Affiliation(s)
- V. Gascón
- Molecular Sieves Group. Institute of Catalysis and Petroleum Chemistry (ICP-CSIC)
- Madrid, Spain
| | - I. Díaz
- Molecular Sieves Group. Institute of Catalysis and Petroleum Chemistry (ICP-CSIC)
- Madrid, Spain
| | - R. M. Blanco
- Molecular Sieves Group. Institute of Catalysis and Petroleum Chemistry (ICP-CSIC)
- Madrid, Spain
| | - C. Márquez-Álvarez
- Molecular Sieves Group. Institute of Catalysis and Petroleum Chemistry (ICP-CSIC)
- Madrid, Spain
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22
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Johnson BJ, Peterson GW, Jones P, Melde BJ, Taft JR, Schindler BJ. Porphyrin-embedded organosilicate materials for ammonia adsorption. J PORPHYR PHTHALOCYA 2013. [DOI: 10.1142/s1088424612501337] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
This study describes the application of porphyrin-embedded porous organosilicate materials to the adsorption of ammonia gas. Organosilicate scaffolds were synthesized through a surfactant-templating process combined with a phase separation technique. The structure offers a macro-textured scaffold to facilitate flow through the sorbent material and provide enhanced access to the available surface area provided by a combination of micro- and mesopores distributed over a range of sizes. The materials were grafted post-synthesis to provide sites for covalent immobilization of porphyrins. These porphyrins were utilized for incorporation of metal sites into the organosilicate materials. The removal of ammonia was evaluated for a number of materials incorporating copper metalloporphyrins of varied structure at varied loading levels. Results have been compared to removal of ammonia by a carbon material. Copper deuteroporphyrin IX bis-ethylene glycol provided the strongest interactions with ammonia. High loading levels of this porphyrin within the sorbent structure showed increasing evidence of stacking and did not improve the performance of the material.
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Affiliation(s)
| | | | - Paulette Jones
- Science Applications International Corporation, Gunpowder, MD 21010, USA
| | | | - Jenna R. Taft
- NOVA Research Incorporated, Alexandria, VA 22308, USA
| | - Bryan J. Schindler
- Science Applications International Corporation, Gunpowder, MD 21010, USA
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23
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Chen YP, Chen CT, Hung Y, Chou CM, Liu TP, Liang MR, Chen CT, Mou CY. A new strategy for intracellular delivery of enzyme using mesoporous silica nanoparticles: superoxide dismutase. J Am Chem Soc 2013; 135:1516-23. [PMID: 23289802 DOI: 10.1021/ja3105208] [Citation(s) in RCA: 125] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
We developed mesoporous silica nanoparticle (MSN) as a multifunctional vehicle for enzyme delivery. Enhanced transmembrane delivery of a superoxide dismutase (SOD) enzyme embedded in MSN was demonstrated. Conjugation of the cell-penetrating peptide derived from the human immunodeficiency virus 1 (HIV) transactivator protein (TAT) to mesoporous silica nanoparticle is shown to be an effective way to enhance transmembrane delivery of nanoparticles for intracellular and molecular therapy. Cu,Zn-superoxide dismutase (SOD) is a key antioxidant enzyme that detoxifies intracellular reactive oxygen species, ROS, thereby protecting cells from oxidative damage. In this study, we fused a human Cu,Zn-SOD gene with TAT in a bacterial expression vector to produce a genetic in-frame His-tagged TAT-SOD fusion protein. The His-tagged TAT-SOD fusion protein was expressed in E. coli using IPTG induction and purified using FMSN-Ni-NTA. The purified TAT-SOD was conjugated to FITC-MSN forming FMSN-TAT-SOD. The effectiveness of FMSN-TAT-SOD as an agent against ROS was investigated, which included the level of ROS and apoptosis after free radicals induction and functional recovery after ROS damage. Confocal microscopy on live unfixed cells and flow cytometry analysis showed characteristic nonendosomal distribution of FMSN-TAT-SOD. Results suggested that FMSN-TAT-SOD may provide a strategy for the therapeutic delivery of antioxidant enzymes that protect cells from ROS damage.
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Affiliation(s)
- Yi-Ping Chen
- Department of Chemistry, National Taiwan University, Taipei 106, Taiwan
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24
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Blin JL, Impéror-Clerc M. Mechanism of self-assembly in the synthesis of silica mesoporous materials: in situ studies by X-ray and neutron scattering. Chem Soc Rev 2013; 42:4071-82. [DOI: 10.1039/c2cs35362h] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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25
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Díaz U, Brunel D, Corma A. Catalysis using multifunctional organosiliceous hybrid materials. Chem Soc Rev 2013; 42:4083-97. [DOI: 10.1039/c2cs35385g] [Citation(s) in RCA: 214] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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26
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27
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Highly Carboxylic-Acid-Functionalized Ethane-Bridged Periodic Mesoporous Organosilicas: Synthesis, Characterization, and Adsorption Properties. Chem Asian J 2012; 7:2111-7. [DOI: 10.1002/asia.201200244] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2012] [Indexed: 11/07/2022]
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28
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A simple approach to prepare monodisperse mesoporous silica nanospheres with adjustable sizes. J Colloid Interface Sci 2012; 376:67-75. [DOI: 10.1016/j.jcis.2012.03.014] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2011] [Revised: 02/22/2012] [Accepted: 03/03/2012] [Indexed: 11/18/2022]
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29
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Wang L, Shylesh S, Dehe D, Philippi T, Dörr G, Seifert A, Zhou Z, Hartmann M, Klupp Taylor RN, Jia M, Ernst S, Thiel WR. Covalent Immobilization of Imidazolium Cations Inside a Silica Support: Palladium‐Catalyzed Olefin Hydrogenation. ChemCatChem 2012. [DOI: 10.1002/cctc.201100329] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Lei Wang
- Fachbereich Chemie, Technische Universität Kaiserslautern, Erwin‐Schrödinger‐Str. Geb. 54, 67661 Kaiserslautern (Germany), Fax: (+49) 631‐2054676
- Key Laboratory of Surface and Interface Chemistry of Jilin Province, College of Chemistry, Jilin University, Changchun, 130012 (China)
| | - Sankaranarayanapillai Shylesh
- Fachbereich Chemie, Technische Universität Kaiserslautern, Erwin‐Schrödinger‐Str. Geb. 54, 67661 Kaiserslautern (Germany), Fax: (+49) 631‐2054676
| | - Daniel Dehe
- Fachbereich Chemie, Technische Universität Kaiserslautern, Erwin‐Schrödinger‐Str. Geb. 54, 67661 Kaiserslautern (Germany), Fax: (+49) 631‐2054676
| | - Thomas Philippi
- Fachbereich Chemie, Technische Universität Kaiserslautern, Erwin‐Schrödinger‐Str. Geb. 54, 67661 Kaiserslautern (Germany), Fax: (+49) 631‐2054676
| | - Gunder Dörr
- Fachbereich Chemie, Technische Universität Kaiserslautern, Erwin‐Schrödinger‐Str. Geb. 54, 67661 Kaiserslautern (Germany), Fax: (+49) 631‐2054676
| | - Andreas Seifert
- Institut für Chemie, Technische Universität Chemnitz, Straße der Nationen 62, 09111 Chemnitz (Germany)
| | - Zhou Zhou
- Erlangen Catalysis Resource Center (ECRC), Friedrich‐Alexander Universität Erlangen‐Nürnberg, Egerlandstraße 3, 91058 Erlangen (Germany)
| | - Martin Hartmann
- Erlangen Catalysis Resource Center (ECRC), Friedrich‐Alexander Universität Erlangen‐Nürnberg, Egerlandstraße 3, 91058 Erlangen (Germany)
| | - Robin N. Klupp Taylor
- Institute of Particle Technology, Friedrich‐Alexander Universität Erlangen‐Nürnberg, Cauerstrasse 4, 91058 Erlangen (Germany)
| | - Mingjun Jia
- Key Laboratory of Surface and Interface Chemistry of Jilin Province, College of Chemistry, Jilin University, Changchun, 130012 (China)
| | - Stefan Ernst
- Fachbereich Chemie, Technische Universität Kaiserslautern, Erwin‐Schrödinger‐Str. Geb. 54, 67661 Kaiserslautern (Germany), Fax: (+49) 631‐2054676
| | - Werner R. Thiel
- Fachbereich Chemie, Technische Universität Kaiserslautern, Erwin‐Schrödinger‐Str. Geb. 54, 67661 Kaiserslautern (Germany), Fax: (+49) 631‐2054676
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30
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Jayalakshmi V, Wood T, Basu R, Du J, Blackburn T, Rosenblatt C, Crudden CM, Lemieux RP. Probing the pore structure of a chiral periodic mesoporous organosilica using liquid crystals. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm33089j] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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31
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32
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Hao TT, Shi JY, Zhuang TY, Wang WD, Li FC, Wang W. Mesostructure-controlled synthesis of chiral norbornane-bridged periodic mesoporous organosilicas. RSC Adv 2012. [DOI: 10.1039/c2ra00805j] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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33
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Sun L, Mai W, Dang S, Qiu Y, Deng W, Shi L, Yan W, Zhang H. Near-infrared luminescence of periodic mesoporous organosilicas grafted with lanthanide complexes based on visible-light sensitization. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm15158h] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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34
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Karimi B, Mirzaei HM, Mobaraki A. Periodic mesoporous organosilica functionalized sulfonic acids as highly efficient and recyclable catalysts in biodiesel production. Catal Sci Technol 2012. [DOI: 10.1039/c2cy00444e] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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35
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Maurer C, Pittenauer E, Du VA, Allmaier G, Schubert U. Cyclic bis(β-diketonate)- and bis(β-ketoesterate)-bridged titanium and zirconium alkoxide derivatives. Dalton Trans 2012; 41:2346-53. [DOI: 10.1039/c1dt11780g] [Citation(s) in RCA: 14] [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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36
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Bernardoni F, Fadeev AY. Adsorption and wetting characterization of hydrophobic SBA-15 silicas. J Colloid Interface Sci 2011; 356:690-8. [DOI: 10.1016/j.jcis.2011.01.033] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2010] [Revised: 01/07/2011] [Accepted: 01/11/2011] [Indexed: 11/28/2022]
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37
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Abstract
This Review aims to give an overview of recent research in the area of porous, organic-inorganic and purely organic, functional materials. Possibilities for introducing organic groups that exhibit chemical and/or physical functions into porous materials will be described, with a focus on the incorporation of such functional groups as a supporting part of the pore walls. The number of organic groups in the network can be increased such that porous, purely organic materials are obtained.
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Affiliation(s)
- Arne Thomas
- Institute of Chemistry: Functional Materials, Technische Universität Berlin, Englische Strasse 20, 10587 Berlin, Germany.
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38
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Camarota B, Goto Y, Inagaki S, Onida B. Basic sites on periodic mesoporous organosilicas investigated by XPS and in situ FTIR of adsorbed pyrrole. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:1181-1185. [PMID: 21188997 DOI: 10.1021/la103814w] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Oxygen sites in ethane-bridged and phenylene-bridged PMOs prepared using neutral templates in acidic conditions are characterized by means of XPS and FTIR spectroscopy of adsorbed pyrrole. Their electron donor ability is observed to be stronger than that of oxygens in pure amorphous silica of MCM-41 type and comparable to that reported for oxygen atoms in some alkali metal exchange zeolites. For pyrrole adsorbed on PMOs double interactions most probably occur, involving both silanols and electron donor sites at the surface. In the case of phenylene-bridged PMO preferential electron donor sites for interaction with pyrrole N-H group are aromatic rings rather than oxygens, as previously observed for adsorbed iodine.
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Affiliation(s)
- Beatrice Camarota
- Dipartimento di Scienza dei Materiali e Ingegneria Chimica, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
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39
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Gu S, Jaroniec M. A new approach to synthesis of periodic mesoporous organosilicas: taking advantage of self-assembly and reactivity of organic precursors. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c1jm10322a] [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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40
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Mehdi A, Reye C, Corriu R. From molecular chemistry to hybrid nanomaterials. Design and functionalization. Chem Soc Rev 2011; 40:563-74. [DOI: 10.1039/b920516k] [Citation(s) in RCA: 170] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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41
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Hérault D, Cerveau G, Corriu RJP, Mehdi A. New mesostructured organosilica with chiral sugar derived structures: nice host for gold nanoparticles stabilisation. Dalton Trans 2011; 40:446-51. [DOI: 10.1039/c0dt01162b] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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42
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Linares N, Serrano E, Rico M, Mariana Balu A, Losada E, Luque R, García-Martínez J. Incorporation of chemical functionalities in the framework of mesoporous silica. Chem Commun (Camb) 2011; 47:9024-35. [DOI: 10.1039/c1cc11016k] [Citation(s) in RCA: 109] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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43
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44
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Liu X, Wang P, Yang Y, Wang P, Yang Q. (R)-(+)-Binol-Functionalized Mesoporous Organosilica as a Highly Efficient Pre-Chiral Catalyst for Asymmetric Catalysis. Chem Asian J 2010; 5:1232-9. [DOI: 10.1002/asia.200900737] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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45
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Grandsire AF, Laborde C, Lamaty F, Mehdi A. Palladium supported on polyether-functionalized mesoporous silica. Synthesis and application as catalyst for Heck coupling reaction. Appl Organomet Chem 2010. [DOI: 10.1002/aoc.1566] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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46
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47
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Beretta M, Morell J, Sozzani P, Fröba M. Towards peptide formation inside the channels of a new divinylaniline-bridged periodic mesoporous organosilica. Chem Commun (Camb) 2010; 46:2495-7. [DOI: 10.1039/b923485c] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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48
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Walcarius A, Mercier L. Mesoporous organosilica adsorbents: nanoengineered materials for removal of organic and inorganic pollutants. ACTA ACUST UNITED AC 2010. [DOI: 10.1039/b924316j] [Citation(s) in RCA: 473] [Impact Index Per Article: 33.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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49
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Zhuang TY, Shi JY, Ma BC, Wang W. Chiral norbornane-bridged periodic mesoporous organosilicas. ACTA ACUST UNITED AC 2010. [DOI: 10.1039/c0jm01678k] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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50
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Cho EB, Kim D, Jaroniec M. Bifunctional periodic mesoporous organosilicas with thiophene and isocyanurate bridging groups. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:13258-13263. [PMID: 19722603 DOI: 10.1021/la902089c] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Bifunctional periodic mesoporous organosilicas (BPMOs) with thiophene- and isocyanurate-bridging groups were prepared by one-pot co-condensation of 2,5-bis(triethoxysilyl)thiophene and tris[3-(trimethoxysilyl)propyl]isocyanurate precursors in the presence of a poly(ethylene oxide)-poly(DL-lactic acid-co-glycolic acid)-poly(ethylene oxide) (PEO-PLGA-PEO) triblock copolymer under acidic conditions. The resulting BPMOs exhibited 2D hexagonal ordering (p6mm), large mesopores of approximately 7.7 nm, and high BET surface area (approximately 600-700 m(2)/g). (13)C CP-MAS and (29)Si MAS NMR studies confirmed the presence of thiophene and isocyanurate bridging groups inside the framework of pore walls with the relative content reflecting the synthesis gel composition. Additional quantitative estimation was provided by N and S elemental analysis. Thermogravimetric analysis showed the thiophene-isocyanurate BPMOs are stable up to 250 degrees C in flowing air and up to 400 degrees C in flowing nitrogen.
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Affiliation(s)
- Eun-Bum Cho
- Department of Chemical Engineering, Polymer Technology Institute, Sungkyunkwan University, Suwon, Gyeonggi-do 440-746, Korea
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