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Leroy C, Aussenac F, Bonhomme-Coury L, Osaka A, Hayakawa S, Babonneau F, Coelho-Diogo C, Bonhomme C. Hydroxyapatites: Key Structural Questions and Answers from Dynamic Nuclear Polarization. Anal Chem 2017; 89:10201-10207. [PMID: 28872852 DOI: 10.1021/acs.analchem.7b01332] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We demonstrate that NMR/DNP (Dynamic Nuclear Polarization) allows an unprecedented description of carbonate substituted hydroxyapatite (CHAp). Key structural questions related to order/disorder and clustering of carbonates are tackled using distance sensitive DNP experiments using 13C-13C recoupling. Such experiments are easily implemented due to unprecedented DNP gain (orders of magnitude). DNP is efficiently mediated by quasi one-dimensional spin diffusion through the hydroxyl columns present in the CHAp structure (thought of as "highways" for spin diffusion). For spherical nanoparticles and ϕ < 100 nm, it is numerically shown that spin diffusion allows their study as a whole. Most importantly, we demonstrate also that the DNP study at 100 K leads to data which are comparable to data obtained at room temperature (in terms of spin dynamics and line shape resolution). Finally, all 2D DNP experiments can be interpreted in terms of domains exhibiting well identified types of substitution: local order and carbonate clustering are clearly favored.
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Affiliation(s)
- César Leroy
- Sorbonne Universités, UPMC Université Paris 06 , CNRS, Collège de France, Laboratoire de Chimie de la Matière Condensée de Paris (LCMCP) UMR 7574, 4 Place Jussieu, 75252 Paris Cedex 05, France
| | - Fabien Aussenac
- Bruker France , 34, rue de l'Industrie, 67166 Wissembourg, France
| | - Laure Bonhomme-Coury
- Sorbonne Universités, UPMC Université Paris 06 , CNRS, Collège de France, Laboratoire de Chimie de la Matière Condensée de Paris (LCMCP) UMR 7574, 4 Place Jussieu, 75252 Paris Cedex 05, France
| | - Akiyoshi Osaka
- Graduate School of Natural Science and Technology, University of Okayama , Okayama 700-8530, Japan
| | - Satoshi Hayakawa
- Graduate School of Natural Science and Technology, University of Okayama , Okayama 700-8530, Japan
| | - Florence Babonneau
- Sorbonne Universités, UPMC Université Paris 06 , CNRS, Collège de France, Laboratoire de Chimie de la Matière Condensée de Paris (LCMCP) UMR 7574, 4 Place Jussieu, 75252 Paris Cedex 05, France
| | - Cristina Coelho-Diogo
- Sorbonne Universités, UPMC Université Paris 06 , CNRS, Institut des Matériaux de Paris Centre (IMPC-UPMC-FR2482), 75252 Paris, Cedex 05, France
| | - Christian Bonhomme
- Sorbonne Universités, UPMC Université Paris 06 , CNRS, Collège de France, Laboratoire de Chimie de la Matière Condensée de Paris (LCMCP) UMR 7574, 4 Place Jussieu, 75252 Paris Cedex 05, France
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52
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Salnikov ES, Abel S, Karthikeyan G, Karoui H, Aussenac F, Tordo P, Bechinger B, Ouari O. Dynamic Nuclear Polarization/Solid-State NMR Spectroscopy of Membrane Polypeptides: Free-Radical Optimization for Matrix-Free Lipid Bilayer Samples. Chemphyschem 2017; 18:2103-2113. [PMID: 28574169 DOI: 10.1002/cphc.201700389] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Revised: 05/24/2017] [Indexed: 01/07/2023]
Abstract
Dynamic nuclear polarization (DNP) boosts the sensitivity of NMR spectroscopy by orders of magnitude and makes investigations previously out of scope possible. For magic-angle-spinning (MAS) solid-state NMR spectroscopy studies, the samples are typically mixed with biradicals dissolved in a glass-forming solvent and are investigated at cryotemperatures. Herein, we present new biradical polarizing agents developed for matrix-free samples such as supported lipid bilayers, which are systems widely used for the investigation of membrane polypeptides of high biomedical importance. A series of 11 biradicals with different structures, geometries, and physicochemical properties were comprehensively tested for DNP performance in lipid bilayers, some of them developed specifically for DNP investigations of membranes. The membrane-anchored biradicals PyPol-C16, AMUPOL-cholesterol, and bTurea-C16 were found to exhibit improved g-tensor alignment, inter-radical distance, and dispersion. Consequently, these biradicals show the highest signal enhancement factors so far obtained for matrix-free membranes or other matrix-free samples and may potentially shorten NMR acquisition times by three orders of magnitude. Furthermore, the optimal biradical-to-lipid ratio, sample deuteration, and membrane lipid composition were determined under static and MAS conditions. To rationalize biradical performance better, DNP enhancement was measured by using the 13 C and 15 N signals of lipids and a peptide as a function of the biradical concentration, DNP build-up time, resonance line width, quenching effect, microwave power, and MAS frequency.
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Affiliation(s)
- Evgeniy S Salnikov
- Institut de chimie, UMR 7177, Université de Strasbourg/CNRS, 4, rue Blaise Pascal, 67070, Strasbourg, France
| | - Sébastien Abel
- Aix Marseille Univ, CNRS, ICR UMR 7273, 13013, Marseille, France
| | | | - Hakim Karoui
- Aix Marseille Univ, CNRS, ICR UMR 7273, 13013, Marseille, France
| | - Fabien Aussenac
- Bruker Biospin, 34, rue de l'industrie, 67166, Wissembourg, France
| | - Paul Tordo
- Aix Marseille Univ, CNRS, ICR UMR 7273, 13013, Marseille, France
| | - Burkhard Bechinger
- Institut de chimie, UMR 7177, Université de Strasbourg/CNRS, 4, rue Blaise Pascal, 67070, Strasbourg, France
| | - Olivier Ouari
- Aix Marseille Univ, CNRS, ICR UMR 7273, 13013, Marseille, France
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53
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Sadeghzadeh SM, Zhiani R, Emrani S. Ni@Pd nanoparticles supported on ionic liquid-functionalized KCC-1 as robust and recyclable nanocatalysts for cycloaddition of propargylic amines and CO2. Appl Organomet Chem 2017. [DOI: 10.1002/aoc.3941] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Seyed Mohsen Sadeghzadeh
- Department of Chemistry, Faculty of Sciences, Neyshabur Branch; Islamic Azad University; Neyshabur Iran
| | - Rahele Zhiani
- Department of Chemistry, Faculty of Sciences, Neyshabur Branch; Islamic Azad University; Neyshabur Iran
| | - Shokufe Emrani
- Department of Chemistry, Faculty of Sciences, Neyshabur Branch; Islamic Azad University; Neyshabur Iran
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54
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Bayal N, Singh R, Polshettiwar V. Nanostructured Silica-Titania Hybrid using Dendritic Fibrous Nanosilica as a Photocatalyst. CHEMSUSCHEM 2017; 10:2182-2191. [PMID: 28251821 DOI: 10.1002/cssc.201700135] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Revised: 02/22/2017] [Indexed: 06/06/2023]
Abstract
A new method has been developed to fabricate active TiO2 photocatalysts by tuning the morphology of the catalyst support. A sustainable solution-phase TiO2 deposition on dendritic fibrous nanosilica (DFNS) protocol is developed, which is better than the complex and expensive atomic layer deposition technique. In general, catalytic activity decreases with an increased TiO2 loading on conventional mesoporous silica because of the loss of the surface area caused by the blocking of pores. Notably, in the case of the dendritic fibrous nanosilica KCC-1 as a support, because of its open fibrous morphology, even at the highest TiO2 loading, a relatively large amount of surface area remained intact. This improved the accessibility of active sites, which increased the catalytic performance of the KCC-1/TiO2 photocatalyst. KCC-1-supported TiO2 is a superior photocatalyst in terms of H2 generation (26.4 mmol gTiO2 -1 h-1 ) under UV light. This study may provide a new direction for photocatalyst development through the morphology control of the support.
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Affiliation(s)
- Nisha Bayal
- Department of Chemical Sciences, Tata Institute of Fundamental Research (TIFR), Homi Bhabha Road, Colaba, Mumbai, India
| | - Rustam Singh
- Department of Chemical Sciences, Tata Institute of Fundamental Research (TIFR), Homi Bhabha Road, Colaba, Mumbai, India
| | - Vivek Polshettiwar
- Department of Chemical Sciences, Tata Institute of Fundamental Research (TIFR), Homi Bhabha Road, Colaba, Mumbai, India
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55
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Leskes M, Kim G, Liu T, Michan AL, Aussenac F, Dorffer P, Paul S, Grey CP. Surface-Sensitive NMR Detection of the Solid Electrolyte Interphase Layer on Reduced Graphene Oxide. J Phys Chem Lett 2017; 8:1078-1085. [PMID: 28195488 DOI: 10.1021/acs.jpclett.6b02590] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Forming a stable solid electrolyte interphase (SEI) is critical for rechargeable batteries' performance and lifetime. Understanding its formation requires analytical techniques that provide molecular-level insight. Here, dynamic nuclear polarization (DNP) is utilized for the first time to enhance the sensitivity of solid-state NMR (ssNMR) spectroscopy to the SEI. The approach is demonstrated on reduced graphene oxide (rGO) cycled in Li-ion cells in natural abundance and 13C-enriched electrolyte solvents. Our results indicate that DNP enhances the signal of outer SEI layers, enabling detection of natural abundance 13C spectra from this component of the SEI on reasonable time frames. Furthermore, 13C-enriched electrolyte measurements at 100 K provide ample sensitivity without DNP due to the vast amount of SEI filling the rGO pores, thereby allowing differentiation of the inner and outer SEI layer composition. Developing this approach further will benefit the study of many electrode materials, equipping ssNMR with the necessary sensitivity to probe the SEI efficiently.
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Affiliation(s)
- Michal Leskes
- Department of Materials and Interfaces, Weizmann Institute of Science , Rehovot, 76100 Israel
| | - Gunwoo Kim
- Department of Chemistry, University of Cambridge , Lensfield Road, Cambridge CB2 1EW, United Kingdom
- Cambridge Graphene Centre, University of Cambridge , Cambridge CB3 0FA, United Kingdom
| | - Tao Liu
- Department of Chemistry, University of Cambridge , Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - Alison L Michan
- Department of Chemistry, University of Cambridge , Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - Fabien Aussenac
- Bruker BioSpin , 34 rue de l'Industrie BP 10002, 67166 Wissembourg Cedex, France
| | - Patrick Dorffer
- Bruker BioSpin , 34 rue de l'Industrie BP 10002, 67166 Wissembourg Cedex, France
| | - Subhradip Paul
- DNP MAS NMR Facility, Sir Peter Mansfield Magnetic Resonance Centre, University of Nottingham , Nottingham NG7 2RD, United Kingdom
| | - Clare P Grey
- Department of Chemistry, University of Cambridge , Lensfield Road, Cambridge CB2 1EW, United Kingdom
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56
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Berruyer P, Lelli M, Conley MP, Silverio DL, Widdifield CM, Siddiqi G, Gajan D, Lesage A, Copéret C, Emsley L. Three-Dimensional Structure Determination of Surface Sites. J Am Chem Soc 2017; 139:849-855. [PMID: 27997167 PMCID: PMC5719466 DOI: 10.1021/jacs.6b10894] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The spatial arrangement of atoms is directly linked to chemical function. A fundamental challenge in surface chemistry and catalysis relates to the determination of three-dimensional structures with atomic-level precision. Here we determine the three-dimensional structure of an organometallic complex on an amorphous silica surface using solid-state NMR measurements, enabled through a dynamic nuclear polarization surface enhanced NMR spectroscopy approach that induces a 200-fold increase in the NMR sensitivity for the surface species. The result, in combination with EXAFS, is a detailed structure for the surface complex determined with a precision of 0.7 Å. We observe a single well-defined conformation that is folded toward the surface in such a way as to include an interaction between the platinum metal center and the surface oxygen atoms.
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Affiliation(s)
- Pierrick Berruyer
- 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
| | - Moreno Lelli
- Magnetic Resonance Center (CERM), University of Florence , 50019 Sesto Fiorentino (FI), Italy
| | - Matthew P Conley
- Department of Chemistry and Applied Biosciences, ETH Zurich , CH-8037 Zurich, Switzerland
| | - Daniel L Silverio
- Department of Chemistry and Applied Biosciences, ETH Zurich , CH-8037 Zurich, Switzerland
| | - Cory M Widdifield
- Department of Chemistry, Durham University , DH1 3LE Durham, United Kingdom
| | - Georges Siddiqi
- Department of Chemistry and Applied Biosciences, ETH Zurich , CH-8037 Zurich, Switzerland
| | - 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
| | - Christophe Copéret
- Department of Chemistry and Applied Biosciences, ETH Zurich , CH-8037 Zurich, Switzerland
| | - Lyndon Emsley
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL) , CH-1015 Lausanne, Switzerland
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57
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Sadeghzadeh SM, Zhiani R, Emrani S. KCC-1/GMSI/VB12 as a new nano catalyst for the carbonylative Suzuki–Miyaura crosscoupling reaction. RSC Adv 2017. [DOI: 10.1039/c7ra06021a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
KCC-1/GMSI/VB12 was evaluated for the carbonylative Suzuki–Miyaura crosscoupling reaction between carbon monoxide, 4-iodoanisole and phenylboronic acid afforded the desired products in high yield.
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Affiliation(s)
| | - Rahele Zhiani
- Department of Chemistry
- Faculty of Sciences
- Neyshabur Branch
- Islamic Azad University
- Neyshabur
| | - Shokufe Emrani
- Department of Chemistry
- Faculty of Sciences
- Neyshabur Branch
- Islamic Azad University
- Neyshabur
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58
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Kaushik M, Bahrenberg T, Can TV, Caporini MA, Silvers R, Heiliger J, Smith AA, Schwalbe H, Griffin RG, Corzilius B. Gd(iii) and Mn(ii) complexes for dynamic nuclear polarization: small molecular chelate polarizing agents and applications with site-directed spin labeling of proteins. Phys Chem Chem Phys 2016; 18:27205-27218. [PMID: 27545112 PMCID: PMC5053914 DOI: 10.1039/c6cp04623a] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We investigate complexes of two paramagnetic metal ions Gd3+ and Mn2+ to serve as polarizing agents for solid-state dynamic nuclear polarization (DNP) of 1H, 13C, and 15N at magnetic fields of 5, 9.4, and 14.1 T. Both ions are half-integer high-spin systems with a zero-field splitting and therefore exhibit a broadening of the mS = -1/2 ↔ +1/2 central transition which scales inversely with the external field strength. We investigate experimentally the influence of the chelator molecule, strong hyperfine coupling to the metal nucleus, and deuteration of the bulk matrix on DNP properties. At small Gd-DOTA concentrations the narrow central transition allows us to polarize nuclei with small gyromagnetic ratio such as 13C and even 15N via the solid effect. We demonstrate that enhancements observed are limited by the available microwave power and that large enhancement factors of >100 (for 1H) and on the order of 1000 (for 13C) can be achieved in the saturation limit even at 80 K. At larger Gd(iii) concentrations (≥10 mM) where dipolar couplings between two neighboring Gd3+ complexes become substantial a transition towards cross effect as dominating DNP mechanism is observed. Furthermore, the slow spin-diffusion between 13C and 15N, respectively, allows for temporally resolved observation of enhanced polarization spreading from nuclei close to the paramagnetic ion towards nuclei further removed. Subsequently, we present preliminary DNP experiments on ubiquitin by site-directed spin-labeling with Gd3+ chelator tags. The results hold promise towards applications of such paramagnetically labeled proteins for DNP applications in biophysical chemistry and/or structural biology.
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Affiliation(s)
- Monu Kaushik
- Institute of Physical and Theoretical Chemistry and Institute of Biophysical Chemistry, Goethe University Frankfurt, Max-von-Laue-Str. 7-9, 60438 Frankfurt am Main, Germany.
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59
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Märker K, Paul S, Fernández-de-Alba C, Lee D, Mouesca JM, Hediger S, De Paëpe G. Welcoming natural isotopic abundance in solid-state NMR: probing π-stacking and supramolecular structure of organic nanoassemblies using DNP. Chem Sci 2016; 8:974-987. [PMID: 28451235 PMCID: PMC5354064 DOI: 10.1039/c6sc02709a] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Accepted: 10/18/2016] [Indexed: 11/29/2022] Open
Abstract
The low natural abundance of 13C combined with MAS-DNP enables 13C–13C polarization transfer up to ∼7 Å and observation of π-stacking.
The self-assembly of small organic molecules is an intriguing phenomenon, which provides nanoscale structures for applications in numerous fields from medicine to molecular electronics. Detailed knowledge of their structure, in particular on the supramolecular level, is a prerequisite for the rational design of improved self-assembled systems. In this work, we prove the feasibility of a novel concept of NMR-based 3D structure determination of such assemblies in the solid state. The key point of this concept is the deliberate use of samples that contain 13C at its natural isotopic abundance (NA, 1.1%), while exploiting magic-angle spinning dynamic nuclear polarization (MAS-DNP) to compensate for the reduced sensitivity. Since dipolar truncation effects are suppressed to a large extent in NA samples, unique and highly informative spectra can be recorded which are impossible to obtain on an isotopically labeled system. On the self-assembled cyclic diphenylalanine peptide, we demonstrate the detection of long-range internuclear distances up to ∼7 Å, allowing us to observe π-stacking through 13C–13C correlation spectra, providing a powerful tool for the analysis of one of the most important non-covalent interactions. Furthermore, experimental polarization transfer curves are in remarkable agreement with numerical simulations based on the crystallographic structure, and can be fully rationalized as the superposition of intra- and intermolecular contributions. This new approach to NMR crystallography provides access to rich and precise structural information, opening up a new avenue to de novo crystal structure determination by NMR.
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Affiliation(s)
- Katharina Märker
- Univ. Grenoble Alpes , INAC , F-38000 Grenoble , France . .,CEA , INAC , F-38000 Grenoble , France
| | - Subhradip Paul
- Univ. Grenoble Alpes , INAC , F-38000 Grenoble , France . .,CEA , INAC , F-38000 Grenoble , France
| | - Carlos Fernández-de-Alba
- Univ. Grenoble Alpes , INAC , F-38000 Grenoble , France . .,CEA , INAC , F-38000 Grenoble , France
| | - Daniel Lee
- Univ. Grenoble Alpes , INAC , F-38000 Grenoble , France . .,CEA , INAC , F-38000 Grenoble , France
| | - Jean-Marie Mouesca
- Univ. Grenoble Alpes , INAC , F-38000 Grenoble , France . .,CEA , INAC , F-38000 Grenoble , France
| | - Sabine Hediger
- Univ. Grenoble Alpes , INAC , F-38000 Grenoble , France . .,CEA , INAC , F-38000 Grenoble , France.,CNRS , MEM , F-38000 Grenoble , France
| | - Gaël De Paëpe
- Univ. Grenoble Alpes , INAC , F-38000 Grenoble , France . .,CEA , INAC , F-38000 Grenoble , France
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60
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Kundu PK, Dhiman M, Modak A, Chowdhury A, Polshettiwar V, Maiti D. Palladium Nanoparticles Supported on Fibrous Silica (KCC-1-PEI/Pd): A Sustainable Nanocatalyst for Decarbonylation Reactions. Chempluschem 2016; 81:1142-1146. [PMID: 31964102 DOI: 10.1002/cplu.201600245] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2016] [Indexed: 11/10/2022]
Abstract
A practical and convenient decarbonylation of a variety of aromatic, heteroaromatic, and alkenyl aldehydes by using palladium nanoparticles supported on novel, fibrous nanosilica, named KCC-1-PEI/Pd, has been developed. Complete conversion of aldehyde functionalities into deformylated products was achieved in all cases and in nearly all cycles tested by reusing the catalyst systems. This method eliminates further purification of products after their isolation. Syntheses of at least three different deformylated products have been shown in sequence with the same catalyst system, which neither requires use of any additives, such as oxidants and bases, nor CO scavengers.
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Affiliation(s)
- Pintu K Kundu
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India
| | - Mahak Dhiman
- Department of Chemical Sciences, Tata Institute of Fundamental Research (TIFR), Mumbai, 400005, India
| | - Atanu Modak
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India
| | - Arindam Chowdhury
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India
| | - Vivek Polshettiwar
- Department of Chemical Sciences, Tata Institute of Fundamental Research (TIFR), Mumbai, 400005, India
| | - Debabrata Maiti
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India
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61
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Febriyanti E, Suendo V, Mukti RR, Prasetyo A, Arifin AF, Akbar MA, Triwahyono S, Marsih IN. Further Insight into the Definite Morphology and Formation Mechanism of Mesoporous Silica KCC-1. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:5802-11. [PMID: 27120557 DOI: 10.1021/acs.langmuir.6b00675] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
The unique three-dimensional pore structure of KCC-1 has attracted significant attention and has proven to be different compared to other conventional mesoporous silica such as the MCM-41 family, SBA-15, or even MSN nanoparticles. In this research, we carefully examine the morphology of KCC-1 to define more appropriate nomenclature. We also propose a formation mechanism of KCC-1 based on our experimental evidence. Herein, the KCC-1 morphology was interpreted mainly on the basis of compiling all observation and information taken from SEM and TEM images. Further analysis on TEM images was carried out. The gray value intensity profile was derived from TEM images in order to determine the specific pattern of this unique morphology that is found to be clearly different from that of other types of porous spherical-like morphologies. On the basis of these results, the KCC-1 morphology would be more appropriately reclassified as bicontinuous concentric lamellar morphology. Some physical characteristics such as the origin of emulsion, electrical conductivity, and the local structure of water molecules in the KCC-1 emulsion were disclosed to reveal the formation mechanism of KCC-1. The origin of the KCC-1 emulsion was characterized by the observation of the Tyndall effect, conductometry to determine the critical micelle concentration, and Raman spectroscopy. In addition, the morphological evolution study during KCC-1 synthesis completes the portrait of the formation of mesoporous silica KCC-1.
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Affiliation(s)
- E Febriyanti
- Division of Inorganic and Physical Chemistry, Faculty of Mathematics and Natural Sciences, and ‡Research Center for Nanosciences and Nanotechnology, Institut Teknologi Bandung , Jl. Ganesha No. 10, Bandung 40132, Indonesia
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia , 81310 UTM Johor Bahru, Johor, Malaysia
| | - V Suendo
- Division of Inorganic and Physical Chemistry, Faculty of Mathematics and Natural Sciences, and ‡Research Center for Nanosciences and Nanotechnology, Institut Teknologi Bandung , Jl. Ganesha No. 10, Bandung 40132, Indonesia
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia , 81310 UTM Johor Bahru, Johor, Malaysia
| | - R R Mukti
- Division of Inorganic and Physical Chemistry, Faculty of Mathematics and Natural Sciences, and ‡Research Center for Nanosciences and Nanotechnology, Institut Teknologi Bandung , Jl. Ganesha No. 10, Bandung 40132, Indonesia
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia , 81310 UTM Johor Bahru, Johor, Malaysia
| | - A Prasetyo
- Division of Inorganic and Physical Chemistry, Faculty of Mathematics and Natural Sciences, and ‡Research Center for Nanosciences and Nanotechnology, Institut Teknologi Bandung , Jl. Ganesha No. 10, Bandung 40132, Indonesia
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia , 81310 UTM Johor Bahru, Johor, Malaysia
| | - A F Arifin
- Division of Inorganic and Physical Chemistry, Faculty of Mathematics and Natural Sciences, and ‡Research Center for Nanosciences and Nanotechnology, Institut Teknologi Bandung , Jl. Ganesha No. 10, Bandung 40132, Indonesia
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia , 81310 UTM Johor Bahru, Johor, Malaysia
| | - M A Akbar
- Division of Inorganic and Physical Chemistry, Faculty of Mathematics and Natural Sciences, and ‡Research Center for Nanosciences and Nanotechnology, Institut Teknologi Bandung , Jl. Ganesha No. 10, Bandung 40132, Indonesia
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia , 81310 UTM Johor Bahru, Johor, Malaysia
| | - S Triwahyono
- Division of Inorganic and Physical Chemistry, Faculty of Mathematics and Natural Sciences, and ‡Research Center for Nanosciences and Nanotechnology, Institut Teknologi Bandung , Jl. Ganesha No. 10, Bandung 40132, Indonesia
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia , 81310 UTM Johor Bahru, Johor, Malaysia
| | - I N Marsih
- Division of Inorganic and Physical Chemistry, Faculty of Mathematics and Natural Sciences, and ‡Research Center for Nanosciences and Nanotechnology, Institut Teknologi Bandung , Jl. Ganesha No. 10, Bandung 40132, Indonesia
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia , 81310 UTM Johor Bahru, Johor, Malaysia
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62
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Bayal N, Singh B, Singh R, Polshettiwar V. Size and Fiber Density Controlled Synthesis of Fibrous Nanosilica Spheres (KCC-1). Sci Rep 2016; 6:24888. [PMID: 27118152 PMCID: PMC4846819 DOI: 10.1038/srep24888] [Citation(s) in RCA: 116] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Accepted: 04/05/2016] [Indexed: 12/23/2022] Open
Abstract
We report a facile protocol for the synthesis of fibrous nano-silica (KCC-1) with controllable size and fiber density. In this work, we have shown that the particle size, fiber density, surface area and pore volume of KCC-1 can be effectively controlled and tuned by changing various reaction parameters, such as the concentrations of urea, CTAB, 1-pentanol, reaction time, temperature, solvent ratio, and even outside stirring time. For the first time, we were able to control the particle size ranging from as small as 170 nm to as large as 1120 nm. We were also able to control the fiber density from low to medium to very dense, which consequently allowed the tuning of the pore volume. We were able to achieve a pore volume of 2.18 cm(3)/g, which is the highest reported for such a fibrous material. Notably we were even able to increase the surface area up to 1244 m(2)/g, nearly double the previously reported surface area of KCC-1. Thus, one can now synthesize KCC-1 with various degrees of size, surface area, pore volume, and fiber density.
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Affiliation(s)
- Nisha Bayal
- Nanocatalysis Laboratories (NanoCat), Department of Chemical Sciences, Tata Institute of Fundamental Research (TIFR), Mumbai, India
| | - Baljeet Singh
- Nanocatalysis Laboratories (NanoCat), Department of Chemical Sciences, Tata Institute of Fundamental Research (TIFR), Mumbai, India
| | - Rustam Singh
- Nanocatalysis Laboratories (NanoCat), Department of Chemical Sciences, Tata Institute of Fundamental Research (TIFR), Mumbai, India
| | - Vivek Polshettiwar
- Nanocatalysis Laboratories (NanoCat), Department of Chemical Sciences, Tata Institute of Fundamental Research (TIFR), Mumbai, India
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63
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Singh R, Bapat R, Qin L, Feng H, Polshettiwar V. Atomic Layer Deposited (ALD) TiO2 on Fibrous Nano-Silica (KCC-1) for Photocatalysis: Nanoparticle Formation and Size Quantization Effect. ACS Catal 2016. [DOI: 10.1021/acscatal.6b00418] [Citation(s) in RCA: 124] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Rustam Singh
- Nanocatalysis Laboratories
(NanoCat), Department of Chemical Sciences, Tata Institute of Fundamental Research (TIFR), Homi Bhabha Road, Colaba, Mumbai 400005, India
| | - Rudheer Bapat
- Nanocatalysis Laboratories
(NanoCat), Department of Chemical Sciences, Tata Institute of Fundamental Research (TIFR), Homi Bhabha Road, Colaba, Mumbai 400005, India
| | - Lijun Qin
- Laboratory of Material Surface Engineering and Nanofabrication, Xi’an Modern Chemistry Research Institute, Xi’an 710065, People’s Republic of China
| | - Hao Feng
- Laboratory of Material Surface Engineering and Nanofabrication, Xi’an Modern Chemistry Research Institute, Xi’an 710065, People’s Republic of China
| | - Vivek Polshettiwar
- Nanocatalysis Laboratories
(NanoCat), Department of Chemical Sciences, Tata Institute of Fundamental Research (TIFR), Homi Bhabha Road, Colaba, Mumbai 400005, India
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64
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Sadeghzadeh SM. A multicomponent reaction on a ‘free’ KCC-1 catalyst at room temperature under solvent free conditions by visible light. RSC Adv 2016. [DOI: 10.1039/c6ra11480f] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A green and efficient method for the synthesis of various triazolo[1,2-a]indazoletrione under mild conditions is reported, that making it a genuinely green protocol.
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65
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Ouyang M, Wang Y, Zhang J, Zhao Y, Wang S, Ma X. Three dimensional Ag/KCC-1 catalyst with a hierarchical fibrous framework for the hydrogenation of dimethyl oxalate. RSC Adv 2016. [DOI: 10.1039/c5ra26602e] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A novel fibrous nano-silica (KCC-1) based silver nanocatalyst exhibits excellent catalytic activity with a high TOF value in the hydrogenation of DMO to MG.
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Affiliation(s)
- Mengyao Ouyang
- Key Laboratory for Green Chemical Technology of Ministry of Education
- Collaborative Innovation Center of Chemical Science and Engineering
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300072
| | - Yue Wang
- Key Laboratory for Green Chemical Technology of Ministry of Education
- Collaborative Innovation Center of Chemical Science and Engineering
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300072
| | - Jian Zhang
- Key Laboratory for Green Chemical Technology of Ministry of Education
- Collaborative Innovation Center of Chemical Science and Engineering
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300072
| | - Yujun Zhao
- Key Laboratory for Green Chemical Technology of Ministry of Education
- Collaborative Innovation Center of Chemical Science and Engineering
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300072
| | - Shengping Wang
- Key Laboratory for Green Chemical Technology of Ministry of Education
- Collaborative Innovation Center of Chemical Science and Engineering
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300072
| | - Xinbin Ma
- Key Laboratory for Green Chemical Technology of Ministry of Education
- Collaborative Innovation Center of Chemical Science and Engineering
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300072
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66
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Zhang L, Liu H, Huang X, Sun X, Jiang Z, Schlögl R, Su D. Stabilization of Palladium Nanoparticles on Nanodiamond–Graphene Core–Shell Supports for CO Oxidation. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201507821] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Liyun Zhang
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016 (China)
| | - Hongyang Liu
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016 (China)
| | - Xing Huang
- Fritz Haber Institute of the Max Planck Society, Faradayweg 4–6, Berlin 14195 (Germany)
| | - Xueping Sun
- Shanghai Institute of Applied Physics, Shanghai Synchrotron Radiation Facility, Chinese Academy of Sciences, 239 Zhangheng Road, Shanghai 201204 (China)
| | - Zheng Jiang
- Shanghai Institute of Applied Physics, Shanghai Synchrotron Radiation Facility, Chinese Academy of Sciences, 239 Zhangheng Road, Shanghai 201204 (China)
| | - Robert Schlögl
- Fritz Haber Institute of the Max Planck Society, Faradayweg 4–6, Berlin 14195 (Germany)
| | - Dangsheng Su
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016 (China)
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67
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Zhang L, Liu H, Huang X, Sun X, Jiang Z, Schlögl R, Su D. Stabilization of Palladium Nanoparticles on Nanodiamond–Graphene Core–Shell Supports for CO Oxidation. Angew Chem Int Ed Engl 2015; 54:15823-6. [DOI: 10.1002/anie.201507821] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2015] [Indexed: 11/07/2022]
Affiliation(s)
- Liyun Zhang
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016 (China)
| | - Hongyang Liu
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016 (China)
| | - Xing Huang
- Fritz Haber Institute of the Max Planck Society, Faradayweg 4–6, Berlin 14195 (Germany)
| | - Xueping Sun
- Shanghai Institute of Applied Physics, Shanghai Synchrotron Radiation Facility, Chinese Academy of Sciences, 239 Zhangheng Road, Shanghai 201204 (China)
| | - Zheng Jiang
- Shanghai Institute of Applied Physics, Shanghai Synchrotron Radiation Facility, Chinese Academy of Sciences, 239 Zhangheng Road, Shanghai 201204 (China)
| | - Robert Schlögl
- Fritz Haber Institute of the Max Planck Society, Faradayweg 4–6, Berlin 14195 (Germany)
| | - Dangsheng Su
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016 (China)
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68
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Buntkowsky G, Gutmann T. Eine Mausefalle für Carbenium-Ionen: NMR-Detektive bei der Arbeit. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201504899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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69
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Buntkowsky G, Gutmann T. A Mousetrap for Carbenium Ions: NMR Detectives at Work. Angew Chem Int Ed Engl 2015; 54:9450-1. [DOI: 10.1002/anie.201504899] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2015] [Indexed: 11/10/2022]
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70
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Le D, Ziarelli F, Phan TNT, Mollica G, Thureau P, Aussenac F, Ouari O, Gigmes D, Tordo P, Viel S. Up to 100% Improvement in Dynamic Nuclear Polarization Solid-State NMR Sensitivity Enhancement of Polymers by Removing Oxygen. Macromol Rapid Commun 2015; 36:1416-21. [DOI: 10.1002/marc.201500133] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2015] [Revised: 04/23/2015] [Indexed: 11/09/2022]
Affiliation(s)
- Dao Le
- Aix-Marseille Université; CNRS, ICR (UMR 7273); 13397 Marseille cedex 20 France
| | - Fabio Ziarelli
- Aix-Marseille Université; CNRS, Centrale Marseille; Fédération des Sciences Chimiques (FR 1739); 13397 Marseille cedex 20 France
| | - Trang N. T. Phan
- Aix-Marseille Université; CNRS, ICR (UMR 7273); 13397 Marseille cedex 20 France
| | - Giulia Mollica
- Aix-Marseille Université; CNRS, ICR (UMR 7273); 13397 Marseille cedex 20 France
| | - Pierre Thureau
- Aix-Marseille Université; CNRS, ICR (UMR 7273); 13397 Marseille cedex 20 France
| | | | - Olivier Ouari
- Aix-Marseille Université; CNRS, ICR (UMR 7273); 13397 Marseille cedex 20 France
| | - Didier Gigmes
- Aix-Marseille Université; CNRS, ICR (UMR 7273); 13397 Marseille cedex 20 France
| | - Paul Tordo
- Aix-Marseille Université; CNRS, ICR (UMR 7273); 13397 Marseille cedex 20 France
| | - Stéphane Viel
- Aix-Marseille Université; CNRS, ICR (UMR 7273); 13397 Marseille cedex 20 France
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71
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Singh B, Mote KR, Gopinath CS, Madhu PK, Polshettiwar V. SBA-15-Oxynitrides as a Solid-Base Catalyst: Effect of Nitridation Temperature on Catalytic Activity. Angew Chem Int Ed Engl 2015; 54:5985-9. [DOI: 10.1002/anie.201501015] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Indexed: 11/09/2022]
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72
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Singh B, Mote KR, Gopinath CS, Madhu PK, Polshettiwar V. SBA-15-Oxynitrides as a Solid-Base Catalyst: Effect of Nitridation Temperature on Catalytic Activity. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201501015] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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