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Poryvaev AS, Gjuzi E, Yazikova AA, Polyukhov DM, Albrekht YN, Efremov AA, Kudriavykh NA, Yanshole VV, Hoffmann F, Fröba M, Fedin MV. Blatter Radical-Decorated Silica as a Prospective Adsorbent for Selective NO Capture from Air. ACS APPLIED MATERIALS & INTERFACES 2023; 15:5191-5197. [PMID: 36652301 DOI: 10.1021/acsami.2c19183] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Nitrogen oxides are adverse poisonous gases present in the atmosphere and having detrimental effects on the human health and environment. In this work, we propose a new type of mesoporous materials capable of capturing nitrogen monoxide (NO) from air. The designed material combines the robust Santa Barbara Amorphous-15 silica scaffold and ultrastable Blatter-type radicals acting as NO traps. Using in situ electron paramagnetic resonance spectroscopy, we demonstrate that NO capture from air is selective and reversible at practical conditions, thus making Blatter radical-decorated silica highly promising for environmental applications.
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Affiliation(s)
- Artem S Poryvaev
- International Tomography Center SB RAS, Institutskaya Street 3a, Novosibirsk, 630090, Russia
| | - Eva Gjuzi
- Institute of Inorganic and Applied Chemistry, University of Hamburg, Martin-Luther-King-Platz 6, 20146 Hamburg, Germany
| | - Anastasiya A Yazikova
- International Tomography Center SB RAS, Institutskaya Street 3a, Novosibirsk, 630090, Russia
- Novosibirsk State University, Pirogova Street 2, 630090 Novosibirsk, Russia
| | - Daniil M Polyukhov
- International Tomography Center SB RAS, Institutskaya Street 3a, Novosibirsk, 630090, Russia
| | - Yana N Albrekht
- International Tomography Center SB RAS, Institutskaya Street 3a, Novosibirsk, 630090, Russia
- Novosibirsk State University, Pirogova Street 2, 630090 Novosibirsk, Russia
| | - Aleksandr A Efremov
- International Tomography Center SB RAS, Institutskaya Street 3a, Novosibirsk, 630090, Russia
- Novosibirsk State University, Pirogova Street 2, 630090 Novosibirsk, Russia
| | | | - Vadim V Yanshole
- International Tomography Center SB RAS, Institutskaya Street 3a, Novosibirsk, 630090, Russia
| | - Frank Hoffmann
- Institute of Inorganic and Applied Chemistry, University of Hamburg, Martin-Luther-King-Platz 6, 20146 Hamburg, Germany
| | - Michael Fröba
- Institute of Inorganic and Applied Chemistry, University of Hamburg, Martin-Luther-King-Platz 6, 20146 Hamburg, Germany
| | - Matvey V Fedin
- International Tomography Center SB RAS, Institutskaya Street 3a, Novosibirsk, 630090, Russia
- Novosibirsk State University, Pirogova Street 2, 630090 Novosibirsk, Russia
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Moon H, Han S, Scott SL. Tuning molecular adsorption in SBA-15-type periodic mesoporous organosilicas by systematic variation of their surface polarity. Chem Sci 2020; 11:3702-3712. [PMID: 33209241 PMCID: PMC7643544 DOI: 10.1039/d0sc00168f] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Accepted: 03/09/2020] [Indexed: 11/21/2022] Open
Abstract
Surface polarity plays a key role in controlling molecular adsorption at solid-liquid interfaces, with major implications for reactions and separations. In this study, the chemical composition of periodic mesoporous organosilicas (PMOs) was varied by co-condensing Si(OEt)4 with organodisilanes, to create a homologous series of materials with similar surface areas, pore volumes, and hydroxyl contents. Their relative surface polarities, obtained by measuring the fluorescence of a solvatochromic dye, cover a wide range. In this series of PMO materials, EPR spectra of tethered nitroxide radicals show monotonically decreasing mobility as larger fractions of the radicals interact strongly with increasingly non-polar surfaces. The surface properties of the materials also correlate with their affinities for organic molecules dissolved in various solvents. The most polar PMO has negligible affinity for phenol, p-cresol, or furfural when these molecules are dissolved in water. However, stronger solute-surface interactions and favor adsorption as the surface polarity decreases. The trend is reversed for furfural in benzene, where weaker solvent-surface interactions result in higher adsorption on polar surfaces. In DMSO, furfural adsorption is suppressed due to the similar strengths of solute-surface and solvent-surface interactions. Thus, the polarity of the surface relative to the solvent is critical for molecular adsorption. These findings show how adsorption/desorption can be precisely and systematically tuned by appropriate choice of both solvent and surface, and contribute to a predictive strategy for the design of catalytic and separations processes.
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Affiliation(s)
- Hyunjin Moon
- Department of Chemical Engineering , University of California , Santa Barbara , California 93106-5080 , USA . ;
| | - Songi Han
- Department of Chemical Engineering , University of California , Santa Barbara , California 93106-5080 , USA . ;
- Department of Chemistry & Biochemistry , University of California , Santa Barbara , California 93106-9510 , USA
| | - Susannah L Scott
- Department of Chemical Engineering , University of California , Santa Barbara , California 93106-5080 , USA . ;
- Department of Chemistry & Biochemistry , University of California , Santa Barbara , California 93106-9510 , USA
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Wang X, Ji K, Rockenbauer A, Liu Y, Song Y. Host-guest interaction of nitroxide radicals with water-soluble pillar[6]arenes. Org Biomol Chem 2020; 18:2321-2325. [PMID: 32159569 DOI: 10.1039/d0ob00341g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The host-guest interaction of nitroxide radicals with water-soluble pillar[n]arenes was studied for the first time by electron paramagnetic resonance spectroscopy and NMR spectroscopy. Our results showed that this interaction strongly depended on the 4-substituents of nitroxides and the cavity size of pillar[n]arenes. The host-guest interaction with water-soluble pillar[6]arene WP6 effectively increased the thermodynamic and kinetic stability of nitroxide radical 4-AT toward ascorbic acid, thus expanding its potential biomedical applications.
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Affiliation(s)
- Xue Wang
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin 300070, P.R. China.
| | - Kaiyun Ji
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin 300070, P.R. China.
| | - Antal Rockenbauer
- Institute of Materials and Environmental Chemistry, Hungarian Academy of Sciences, Department of Physics, Budapest University of Technology and Economics, Budafoki ut8, 1111 Budapest, Hungary
| | - Yangping Liu
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin 300070, P.R. China.
| | - Yuguang Song
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin 300070, P.R. China.
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Croissant JG, Cattoën X, Wong MCM, Durand JO, Khashab NM. Syntheses and applications of periodic mesoporous organosilica nanoparticles. NANOSCALE 2015; 7:20318-34. [PMID: 26585498 DOI: 10.1039/c5nr05649g] [Citation(s) in RCA: 150] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Periodic Mesoporous Organosilica (PMO) nanomaterials are envisioned to be one of the most prolific subjects of research in the next decade. Similar to mesoporous silica nanoparticles (MSN), PMO nanoparticles (NPs) prepared from organo-bridged alkoxysilanes have tunable mesopores that could be utilized for many applications such as gas and molecule adsorption, catalysis, drug and gene delivery, electronics, and sensing; but unlike MSN, the diversity in chemical nature of the pore walls of such nanomaterials is theoretically unlimited. Thus, we expect that PMO NPs will attract considerable interest over the next decade. In this review, we will present a comprehensive overview of the synthetic strategies for the preparation of nanoscaled PMO materials, and then describe their applications in catalysis and nanomedicine. The remarkable assets of the PMO structure are also detailed, and insights are provided for the preparation of more complex PMO nanoplatforms.
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Affiliation(s)
- Jonas G Croissant
- Smart Hybrid Materials Laboratory, Advanced Membranes and Porous Materials Center, King Abdullah University of Science and Technology, Thuwal 23955, Saudi Arabia.
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Wessig M, Spitzbarth M, Drescher M, Winter R, Polarz S. Multiple scale investigation of molecular diffusion inside functionalized porous hosts using a combination of magnetic resonance methods. Phys Chem Chem Phys 2015; 17:15976-88. [DOI: 10.1039/c5cp01369k] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Diffusion in organo-functionalized porous hosts could be tracked by evaluation of spin exchange processes using EPR spectroscopy.
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Affiliation(s)
- Martin Wessig
- Department of Chemistry
- University of Konstanz
- D-78457 Konstanz
- Germany
| | - Martin Spitzbarth
- Department of Chemistry
- University of Konstanz
- D-78457 Konstanz
- Germany
| | - Malte Drescher
- Department of Chemistry
- University of Konstanz
- D-78457 Konstanz
- Germany
| | - Rainer Winter
- Department of Chemistry
- University of Konstanz
- D-78457 Konstanz
- Germany
| | - Sebastian Polarz
- Department of Chemistry
- University of Konstanz
- D-78457 Konstanz
- Germany
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