1
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Pál D, Lacour J. Pfeiffer effect on configurationally labile dyes within ternary complexes with metal ions and enantiopure macrocycles. Dalton Trans 2024; 53:2665-2669. [PMID: 38224291 PMCID: PMC10845008 DOI: 10.1039/d3dt04098d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Accepted: 01/10/2024] [Indexed: 01/16/2024]
Abstract
A configurationally-labile helical dye, 2,4,5,7-tetranitrofluorenone oximate, is used to probe complexes made of enantiopure macrocycles and mono/divalent metal ions. Induced electronic circular dichroism (ECD) and 1H NMR responses are amplified at room temperature only in the presence of K+ and Na+ ions despite larger binding efficiency with alkaline earth metal ions.
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Affiliation(s)
- Dávid Pál
- Department of Organic Chemistry, University of Geneva, Quai Ernest Ansermet 30, CH-1211 Geneva, Switzerland.
| | - Jérôme Lacour
- Department of Organic Chemistry, University of Geneva, Quai Ernest Ansermet 30, CH-1211 Geneva, Switzerland.
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2
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Chiral control of spin-crossover dynamics in Fe(II) complexes. Nat Chem 2022; 14:739-745. [PMID: 35618767 DOI: 10.1038/s41557-022-00933-0] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Accepted: 03/14/2022] [Indexed: 11/08/2022]
Abstract
Iron-based spin-crossover complexes hold tremendous promise as multifunctional switches in molecular devices. However, real-world technological applications require the excited high-spin state to be kinetically stable-a feature that has been achieved only at cryogenic temperatures. Here we demonstrate high-spin-state trapping by controlling the chiral configuration of the prototypical iron(II)tris(4,4'-dimethyl-2,2'-bipyridine) in solution, associated for stereocontrol with the enantiopure Δ- or Λ-enantiomer of tris(3,4,5,6-tetrachlorobenzene-1,2-diolato-κ2O1,O2)phosphorus(V) (P(O2C6Cl4)3- or TRISPHAT) anions. We characterize the high-spin-state relaxation using broadband ultrafast circular dichroism spectroscopy in the deep ultraviolet in combination with transient absorption and anisotropy measurements. We find that the high-spin-state decay is accompanied by ultrafast changes of its optical activity, reflecting the coupling to a symmetry-breaking torsional twisting mode, contrary to the commonly assumed picture. The diastereoselective ion pairing suppresses the vibrational population of the identified reaction coordinate, thereby achieving a fourfold increase of the high-spin-state lifetime. More generally, our results motivate the synthetic control of the torsional modes of iron(II) complexes as a complementary route to manipulate their spin-crossover dynamics.
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3
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Novikov AS, Gushchin AL. Trinuclear molybdenum clusters with sulfide bridges as potential anionic receptors via chalcogen bonding. CrystEngComm 2021. [DOI: 10.1039/d1ce00514f] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Trinuclear Mo3S7 cluster complexes with sulfide bridges as potential anionic receptors due to chalcogen bonding.
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Affiliation(s)
| | - Artem L. Gushchin
- Nikolaev Institute of Inorganic Chemistry
- Siberian Branch of Russian Academy of Sciences
- Novosibirsk 630090
- Russian Federation
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4
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Chen M, Liu D, Huang J, Li Y, Wang M, Li K, Wang J, Jiang Z, Li X, Wang P. Trefoiled Propeller-Shaped Spiral Terpyridyl Metal-Organic Architectures. Inorg Chem 2019; 58:11146-11154. [PMID: 31361129 DOI: 10.1021/acs.inorgchem.9b01701] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Constructing exquisite and intricate molecular architectures is always the pursuit of chemists. In this report, the propeller-shaped trefoil structures S1 and S2 were successfully prepared by the stepwise self-assembly of predesigned tripodal metal-organic ligands, which consist of bis(terpyridine)s-Ru2+-tris(terpyridine)s connectivities for the following complexation with Fe2+. The complexes can be described as racemic spiral assemblies with three-fold spiralism. These unique discrete metal-organic architectures were fully characterized by 1H NMR, 2D NMR spectroscopy (COSY and NOESY), diffusion-ordered NMR spectroscopy (DOSY), ESI-MS, TWIM-MS, and TEM, and their photophysical and electrochemical properties were also investigated. Further, hybrid trefoiled structure [Fe3L1L2] was detected by taking advantage of the flexibility of metal-organic ligands.
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Affiliation(s)
- Mingzhao Chen
- Institute of Environmental Research at Greater Bay Area, Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education , Guangzhou University , Guangzhou , 510006 , China
| | - Die Liu
- Institute of Environmental Research at Greater Bay Area, Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education , Guangzhou University , Guangzhou , 510006 , China
| | - Jian Huang
- College of Chemistry and Chemical Engineering , Central South University , Changsha , Hunan , 410083 , China
| | - Yiming Li
- Department of Chemistry , University of South Florida , Tampa , Florida 33640 , United States
| | - Ming Wang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry , Jilin University , Changchun , Jilin , 130012 , China
| | - Kaixiu Li
- College of Chemistry and Chemical Engineering , Central South University , Changsha , Hunan , 410083 , China
| | - Jun Wang
- College of Chemistry and Chemical Engineering , Central South University , Changsha , Hunan , 410083 , China
| | - Zhilong Jiang
- Institute of Environmental Research at Greater Bay Area, Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education , Guangzhou University , Guangzhou , 510006 , China
| | - Xiaopeng Li
- Department of Chemistry , University of South Florida , Tampa , Florida 33640 , United States
| | - Pingshan Wang
- Institute of Environmental Research at Greater Bay Area, Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education , Guangzhou University , Guangzhou , 510006 , China.,College of Chemistry and Chemical Engineering , Central South University , Changsha , Hunan , 410083 , China
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5
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Naim A, Bouhadja Y, Cortijo M, Duverger-Nédellec E, Flack HD, Freysz E, Guionneau P, Iazzolino A, Ould Hamouda A, Rosa P, Stefańczyk O, Valentín-Pérez Á, Zeggar M. Design and Study of Structural Linear and Nonlinear Optical Properties of Chiral [Fe(phen)3]2+ Complexes. Inorg Chem 2018; 57:14501-14512. [DOI: 10.1021/acs.inorgchem.8b01089] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Ahmad Naim
- ICMCB, CNRS, Université de Bordeaux, UMR 5026, F-33600 Pessac, France
| | - Yacine Bouhadja
- Department of Chemistry, University of Annaba, BP 12-23200 Sidi-Ammar, Algérie
| | - Miguel Cortijo
- ICMCB, CNRS, Université de Bordeaux, UMR 5026, F-33600 Pessac, France
- CRPP, CNRS, Université de Bordeaux, UMR 5031, F-33600 Pessac, France
| | | | - Howard D. Flack
- Chimie Minérale, Analytique et Appliquée, Sciences II, Université de Genève, 30, Quai Ernest-Ansermet CH-1211 Geneva Switzerland
| | - Eric Freysz
- LOMA, UMR CNRS 5798, 351 Cours de la Libération, FR-33405 Talence Cedex, France
| | | | - Antonio Iazzolino
- LOMA, UMR CNRS 5798, 351 Cours de la Libération, FR-33405 Talence Cedex, France
| | - Amine Ould Hamouda
- LOMA, UMR CNRS 5798, 351 Cours de la Libération, FR-33405 Talence Cedex, France
| | - Patrick Rosa
- ICMCB, CNRS, Université de Bordeaux, UMR 5026, F-33600 Pessac, France
| | - Olaf Stefańczyk
- ICMCB, CNRS, Université de Bordeaux, UMR 5026, F-33600 Pessac, France
| | - Ángela Valentín-Pérez
- ICMCB, CNRS, Université de Bordeaux, UMR 5026, F-33600 Pessac, France
- CRPP, CNRS, Université de Bordeaux, UMR 5031, F-33600 Pessac, France
| | - Mehdi Zeggar
- ICMCB, CNRS, Université de Bordeaux, UMR 5026, F-33600 Pessac, France
- Department of Chemistry, University of Annaba, BP 12-23200 Sidi-Ammar, Algérie
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6
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Gabrielli L, Rosa-Gastaldo D, Salvia MV, Springhetti S, Rastrelli F, Mancin F. Detection and identification of designer drugs by nanoparticle-based NMR chemosensing. Chem Sci 2018; 9:4777-4784. [PMID: 29910928 PMCID: PMC5975544 DOI: 10.1039/c8sc01283k] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Accepted: 04/22/2018] [Indexed: 12/21/2022] Open
Abstract
Properly designed monolayer-protected nanoparticles (2 nm core diameter) can be used as nanoreceptors for selective detection and identification of phenethylamine derivatives (designer drugs) in water. The molecular recognition mechanism is driven by the combination of electrostatic and hydrophobic interactions within the coating monolayer. Each nanoparticle can bind up to 30-40 analyte molecules. The affinity constants range from 105 to 106 M-1 and are modulated by the hydrophobicity of the aromatic moiety in the substrate. Detection of drug candidates (such as amphetamines and methamphetamines) is performed by using magnetization (NOE) or saturation (STD) transfer NMR experiments. In this way, the NMR spectrum of the drug is isolated from that of the mixture, allowing broad-class multianalyte detection and even identification of unknowns. The introduction of a dimethylsilane moiety in the coating monolayer allows performing STD experiments in complex mixtures. In this way, a detection limit of 30 μM is reached with standard instruments.
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Affiliation(s)
- Luca Gabrielli
- Dipartimento di Scienze Chimiche , Università di Padova , Via Marzolo 1 , 35131 Padova , Italy .
| | - Daniele Rosa-Gastaldo
- Dipartimento di Scienze Chimiche , Università di Padova , Via Marzolo 1 , 35131 Padova , Italy .
| | - Marie-Virginie Salvia
- Dipartimento di Scienze Chimiche , Università di Padova , Via Marzolo 1 , 35131 Padova , Italy .
| | - Sara Springhetti
- Dipartimento di Scienze Chimiche , Università di Padova , Via Marzolo 1 , 35131 Padova , Italy .
| | - Federico Rastrelli
- Dipartimento di Scienze Chimiche , Università di Padova , Via Marzolo 1 , 35131 Padova , Italy .
| | - Fabrizio Mancin
- Dipartimento di Scienze Chimiche , Università di Padova , Via Marzolo 1 , 35131 Padova , Italy .
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7
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Abstract
Treating PCl5 with C12H8Li2, generated from either C12H10, C12H8Br2, or C12H8I2, affords three products in different ratios depending on the source of the lithiated biphenyl. Hellwinkel’s salt [P(C12H8)2][P(C12H8)3] ([1][2]) and another product [P(C12H8)(C24H16)][P(C12H8)3] ([1′][2]) were obtained by reacting PCl5 with 2,2′-dilithiobiphenyl [Route A: 2.5 equiv.; obtained from biphenyl, n-BuLi, and TMEDA; Route B: 3.0 equiv.; obtained from 2,2′-diiodobiphenyl and n-BuLi; Route C: 4.0 equiv.; obtained from 2,2′-dibromobiphenyl and n-BuLi]. The synthesis, isolation, and characterization of the chiral spiro-compound [1′][2] and the characterization of the pentavalent phosphorane [P(C12H8)2(C12H9)] (3) are reported. The complex [1′][2] was characterized by 31P{1H} NMR spectroscopy, X-ray crystallography, and mass spectrometry. The pentavalent compound (3) was characterized by 31P{1H} NMR spectroscopy and X-ray crystallography.
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Affiliation(s)
- Khatera Hazin
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, BC V6T 1Z1, Canada
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, BC V6T 1Z1, Canada
| | - Derek P. Gates
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, BC V6T 1Z1, Canada
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, BC V6T 1Z1, Canada
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Isaac JA, Mansour AT, David R, Kochem A, Philouze C, Demeshko S, Meyer F, Réglier M, Simaan AJ, Caldarelli S, Yemloul M, Jamet H, Thibon-Pourret A, Belle C. Tetranuclear and dinuclear phenoxido bridged copper complexes based on unsymmetrical thiosemicarbazone ligands. Dalton Trans 2018; 47:9665-9676. [DOI: 10.1039/c8dt02452a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Dinuclear and tetranuclear copper(ii) complexes based on N,S ligand systems in the solid state and in solution are described.
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9
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Manjunatha Reddy GN, Mannina L, Sobolev AP, Caldarelli S. Polyphenols Fingerprinting in Olive Oils Through Maximum-Quantum NMR Spectroscopy. FOOD ANAL METHOD 2017. [DOI: 10.1007/s12161-017-1069-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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10
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Manjunatha Reddy GN, Yemloul M, Caldarelli S. Combined maximum-quantum and DOSY 3D experiments provide enhanced resolution for small molecules in mixtures. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2017; 55:492-497. [PMID: 27452153 DOI: 10.1002/mrc.4465] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2015] [Revised: 05/16/2016] [Accepted: 05/25/2016] [Indexed: 06/06/2023]
Abstract
We illustrate here as the combination of high-order maximum-quantum (MaxQ) and Diffusion-Ordered SpectroscopY (DOSY) NMR experiments in a 3D layout allows superior resolution for crowded NMR spectra. Non-uniform sampling (NUS) allows compressing the experimental time effectively to reasonable durations. Because diffusion effects were encoded within multiple-quantum coherences, increased sensitivity to magnetic field gradients is observed, requiring compensation for convection effects. The experiment was demonstrated on the spectra of a mix of small polyaromatic molecules. Specifically, in the case analyzed, the experiment provided an extreme simplification through the MaxQDOSY-MaxQ projection plane that presents one peak per molecule. Copyright © 2016 John Wiley & Sons, Ltd.
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Affiliation(s)
- G N Manjunatha Reddy
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301 Avenue de la Terrasse, 91190, Gif-sur-Yvette, France
| | - Mehdi Yemloul
- Aix-Marseille Université, CNRS, Centrale Marseille, Institut des Sciences Moleculaires de Marseille, (iSm2, UMR 7313), 13397, Marseille, France
| | - Stefano Caldarelli
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301 Avenue de la Terrasse, 91190, Gif-sur-Yvette, France
- Aix-Marseille Université, CNRS, Centrale Marseille, Institut des Sciences Moleculaires de Marseille, (iSm2, UMR 7313), 13397, Marseille, France
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11
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Hazin K, Serin SC, Patrick BO, Ezhova MB, Gates DP. [HL2][P(1,2-O2C6Cl4)3] (L = THF, DMF): Brønsted acid initiators for the polymerization of n-butyl vinyl ether and p-methoxystyrene. Dalton Trans 2017; 46:5901-5910. [DOI: 10.1039/c6dt04820j] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The development of solid, weighable Brønsted acids featuring the hexacoordinated phosphorous(v) anion [TRISPHAT]− are reported.
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Affiliation(s)
- Khatera Hazin
- Department of Chemistry
- University of British Columbia
- Vancouver
- Canada
| | - Spencer C. Serin
- Department of Chemistry
- University of British Columbia
- Vancouver
- Canada
| | - Brian O. Patrick
- Department of Chemistry
- University of British Columbia
- Vancouver
- Canada
| | - Maria B. Ezhova
- Department of Chemistry
- University of British Columbia
- Vancouver
- Canada
| | - Derek P. Gates
- Department of Chemistry
- University of British Columbia
- Vancouver
- Canada
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12
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Reddy GNM, Huqi A, Iuga D, Sakurai S, Marsh A, Davis JT, Masiero S, Brown SP. Co-existence of Distinct Supramolecular Assemblies in Solution and in the Solid State. Chemistry 2016; 23:2315-2322. [PMID: 27897351 PMCID: PMC5396329 DOI: 10.1002/chem.201604832] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Indexed: 11/24/2022]
Abstract
The formation of distinct supramolecular assemblies, including a metastable species, is revealed for a lipophilic guanosine (G) derivative in solution and in the solid state. Structurally different G‐quartet‐based assemblies are formed in chloroform depending on the nature of the cation, anion and the salt concentration, as characterized by circular dichroism and time course diffusion‐ordered NMR spectroscopy data. Intriguingly, even the presence of potassium ions that stabilize G‐quartets in chloroform was insufficient to exclusively retain such assemblies in the solid state, leading to the formation of mixed quartet and ribbon‐like assemblies as revealed by fast magic‐angle spinning (MAS) NMR spectroscopy. Distinct N−H⋅⋅⋅N and N−H⋅⋅⋅O intermolecular hydrogen bonding interactions drive quartet and ribbon‐like self‐assembly resulting in markedly different 2D 1H solid‐state NMR spectra, thus facilitating a direct identification of mixed assemblies. A dissolution NMR experiment confirmed that the quartet and ribbon interconversion is reversible–further demonstrating the changes that occur in the self‐assembly process of a lipophilic nucleoside upon a solid‐state to solution‐state transition and vice versa. A systematic study for complexation with different cations (K+, Sr2+) and anions (picrate, ethanoate and iodide) emphasizes that the existence of a stable solution or solid‐state structure may not reflect the stability of the same supramolecular entity in another phase.
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Affiliation(s)
- G N Manjunatha Reddy
- Department of Physics and Department of Chemistry, University of, Warwick, Coventry, CV4 7AL, UK
| | - Aida Huqi
- Dipartimento di Chimica "Giacomo Ciamician", Alma Mater Studiorum, Università di Bologna, 40126, Bologna, Italy
| | - Dinu Iuga
- Department of Physics and Department of Chemistry, University of, Warwick, Coventry, CV4 7AL, UK
| | - Satoshi Sakurai
- JEOL (UK), Silver Court, Watchmead, Welwyn Garden City, AL7 1LT, UK
| | - Andrew Marsh
- Department of Physics and Department of Chemistry, University of, Warwick, Coventry, CV4 7AL, UK
| | - Jeffery T Davis
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD, 20742, USA
| | - Stefano Masiero
- Dipartimento di Chimica "Giacomo Ciamician", Alma Mater Studiorum, Università di Bologna, 40126, Bologna, Italy
| | - Steven P Brown
- Department of Physics and Department of Chemistry, University of, Warwick, Coventry, CV4 7AL, UK
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13
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Diez-Castellnou M, Salvia MV, Springhetti S, Rastrelli F, Mancin F. Nanoparticle-Assisted Affinity NMR Spectroscopy: High Sensitivity Detection and Identification of Organic Molecules. Chemistry 2016; 22:16957-16963. [DOI: 10.1002/chem.201603578] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Indexed: 11/06/2022]
Affiliation(s)
- Marta Diez-Castellnou
- Dipartimento di Scienze Chimiche; Università degli Studi di Padova; via Marzolo 1 35131 Padova Italy
| | - Marie-Virginie Salvia
- Dipartimento di Scienze Chimiche; Università degli Studi di Padova; via Marzolo 1 35131 Padova Italy
- Laboratoire d'Excellence “CORAIL”; Université de Perpignan; 58 Avenue Paul Alduy 66860 Perpignan Cedex France
| | - Sara Springhetti
- Dipartimento di Scienze Chimiche; Università degli Studi di Padova; via Marzolo 1 35131 Padova Italy
| | - Federico Rastrelli
- Dipartimento di Scienze Chimiche; Università degli Studi di Padova; via Marzolo 1 35131 Padova Italy
| | - Fabrizio Mancin
- Dipartimento di Scienze Chimiche; Università degli Studi di Padova; via Marzolo 1 35131 Padova Italy
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14
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Gramosa NV, Ricardo NMSP, Adams RW, Morris GA, Nilsson M. Matrix-assisted diffusion-ordered spectroscopy: choosing a matrix. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2016; 54:815-820. [PMID: 27272403 PMCID: PMC5031188 DOI: 10.1002/mrc.4459] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Revised: 05/04/2016] [Accepted: 05/10/2016] [Indexed: 06/06/2023]
Abstract
Diffusion-ordered spectroscopy (DOSY) is an important technique for separating the NMR signals of the components in a mixture, and relies on differences in diffusion coefficient. Standard DOSY experiments therefore struggle when the components of a mixture are of similar size, and hence diffuse at similar rates. Fortunately, the diffusion coefficients of solutes can be manipulated by changing the matrix in which they diffuse, using matrix components that interact differentially with them, a technique known as matrix-assisted DOSY. In the present investigation, we evaluate the performance of a number of new, previously used, and mixed matrices with an informative test mixture: the three positional isomers of dihydroxybenzene. The aim of this work is to present the matrix-assisted DOSY user with information about the potential utility of a set of matrices (and combinations of matrices), including ionic and non-ionic surfactants, complexing agents, polymers, and mixed solvents. A variety of matrices improved the diffusion resolution of the signals of the test system, with the best separation achieved by mixed micelles of sodium dodecyl sulfate and cetyl trimethylammonium bromide. The use of mixed matrices offers great potential for the analyst to tailor the matrix to a particular sample under study. © 2016 The Authors Magnetic Resonance in Chemistry Published by John Wiley & Sons, Ltd.
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Affiliation(s)
- Nilce V. Gramosa
- Departamento de Química Orgânica e Inorgânica, Centro de CiênciasUniversidade Federal do CearáCP 12 200CEP 60455‐970FortalezaBrazil
| | - Nágila M. S. P. Ricardo
- Departamento de Química Orgânica e Inorgânica, Centro de CiênciasUniversidade Federal do CearáCP 12 200CEP 60455‐970FortalezaBrazil
| | - Ralph W. Adams
- School of ChemistryUniversity of ManchesterManchesterM13 9PLUK
| | | | - Mathias Nilsson
- School of ChemistryUniversity of ManchesterManchesterM13 9PLUK
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15
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Yang Y, Wu R, Huang S, Bai Z. Silica sol assisted chromatographic NMR spectroscopy for resolution of trans- and cis-isomers. JOURNAL OF MAGNETIC RESONANCE (SAN DIEGO, CALIF. : 1997) 2016; 265:210-214. [PMID: 26942864 DOI: 10.1016/j.jmr.2016.02.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2015] [Revised: 02/19/2016] [Accepted: 02/21/2016] [Indexed: 06/05/2023]
Abstract
Chromatographic NMR spectroscopy can separate the mixtures of species with significantly different molecular size, but generally fails for isomeric species. Herein, we reported the resolution of trans- and cis-isomers and their structural analogue, which are different in molecular shapes, but similar in mass, were greatly enhanced in the presence of silica sol. The mixtures of maleic acid, fumaric acid and succinic acid, and the mixtures of trans- and cis-1,2-cyclohexanedicarboxylic acids, were distinguished by virtue of their different degrees of interaction with silica sol. Moreover, we found mixed solvents could improve the spectral resolution of DOSY spectra of mixtures.
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Affiliation(s)
- Ying Yang
- Shandong Provincial Key Laboratory of Synthetic Biology, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, No. 189 Songling Road, 266101 Qingdao, China
| | - Rui Wu
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, 693 Xiongchu Avenue, 430073 Wuhan, China
| | - Shaohua Huang
- Shandong Provincial Key Laboratory of Synthetic Biology, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, No. 189 Songling Road, 266101 Qingdao, China.
| | - Zhengwu Bai
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, 693 Xiongchu Avenue, 430073 Wuhan, China
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16
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Gushchin AL, Ryzhikov MR, Kompan’kov NB, Moroz NK, Sokolov MN. Cation-anion interactions in [Mo3S7(Et2dtc)3](Et2dtc) solutions. J STRUCT CHEM+ 2016. [DOI: 10.1134/s0022476616020190] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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17
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Salvia MV, Ramadori F, Springhetti S, Diez-Castellnou M, Perrone B, Rastrelli F, Mancin F. Nanoparticle-Assisted NMR Detection of Organic Anions: From Chemosensing to Chromatography. J Am Chem Soc 2015; 137:886-92. [DOI: 10.1021/ja511205e] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Marie-Virginie Salvia
- Università di Padova, Dipartimento di Scienze Chimiche, via Marzolo 1, Padova, Italy
| | - Federico Ramadori
- Università di Padova, Dipartimento di Scienze Chimiche, via Marzolo 1, Padova, Italy
| | - Sara Springhetti
- Università di Padova, Dipartimento di Scienze Chimiche, via Marzolo 1, Padova, Italy
| | - Marta Diez-Castellnou
- Università di Padova, Dipartimento di Scienze Chimiche, via Marzolo 1, Padova, Italy
| | - Barbara Perrone
- Università di Padova, Dipartimento di Scienze Chimiche, via Marzolo 1, Padova, Italy
| | - Federico Rastrelli
- Università di Padova, Dipartimento di Scienze Chimiche, via Marzolo 1, Padova, Italy
| | - Fabrizio Mancin
- Università di Padova, Dipartimento di Scienze Chimiche, via Marzolo 1, Padova, Italy
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Huang S, Gao J, Wu R, Li S, Bai Z. Polydimethylsiloxane: a general matrix for high-performance chromatographic NMR spectroscopy. Angew Chem Int Ed Engl 2014; 53:11592-5. [PMID: 25196825 DOI: 10.1002/anie.201406967] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2014] [Indexed: 11/07/2022]
Abstract
The detection and structural characterization of the components of a mixture is a challenging task. Therefore, the development of a facile and general method that enables both the separation and the structural characterization of the components is desired. Diffusion-ordered NMR spectroscopy (DOSY) with the aid of a matrix is a promising tool for this purpose. However, because the currently existing matrices only separate limited components, the application of the DOSY technique is restricted. Herein we introduce a new versatile matrix, poly(dimethylsiloxane), which can fully separate many mixtures of different structural types by liquid-state NMR spectroscopy. With poly(dimethylsiloxane), liquid-state chromatographic NMR spectroscopy could become a general approach for the structural elucidation of mixtures of compounds.
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Affiliation(s)
- Shaohua Huang
- Key Laboratory of Biobased Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101 (China).
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Huang S, Gao J, Wu R, Li S, Bai Z. Polydimethylsiloxane: A General Matrix for High-Performance Chromatographic NMR Spectroscopy. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201406967] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Toumi I, Caldarelli S, Torrésani B. A review of blind source separation in NMR spectroscopy. PROGRESS IN NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY 2014; 81:37-64. [PMID: 25142734 DOI: 10.1016/j.pnmrs.2014.06.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2014] [Accepted: 06/12/2014] [Indexed: 05/22/2023]
Abstract
Fourier transform is the data processing naturally associated to most NMR experiments. Notable exceptions are Pulse Field Gradient and relaxation analysis, the structure of which is only partially suitable for FT. With the revamp of NMR of complex mixtures, fueled by analytical challenges such as metabolomics, alternative and more apt mathematical methods for data processing have been sought, with the aim of decomposing the NMR signal into simpler bits. Blind source separation is a very broad definition regrouping several classes of mathematical methods for complex signal decomposition that use no hypothesis on the form of the data. Developed outside NMR, these algorithms have been increasingly tested on spectra of mixtures. In this review, we shall provide an historical overview of the application of blind source separation methodologies to NMR, including methods specifically designed for the specificity of this spectroscopy.
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Affiliation(s)
- Ichrak Toumi
- Aix Marseille Université, Centrale Marseille, CNRS, iSm2 UMR 7313, 13397 Marseille, France
| | - Stefano Caldarelli
- Aix Marseille Université, Centrale Marseille, CNRS, iSm2 UMR 7313, 13397 Marseille, France.
| | - Bruno Torrésani
- Aix-Marseille Université, CNRS, Centrale Marseille I2M, UMR 7373, 13453 Marseille, France
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Achard T, Tortoreto C, Poblador-Bahamonde AI, Guénée L, Bürgi T, Lacour J. [CpRu]-Catalyzed Carbene Insertions into Epoxides: 1,4-Dioxene Synthesis through SN1-Like Chemistry with Retention of Configuration. Angew Chem Int Ed Engl 2014; 53:6140-4. [DOI: 10.1002/anie.201402994] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2014] [Revised: 03/24/2014] [Indexed: 11/08/2022]
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Achard T, Tortoreto C, Poblador-Bahamonde AI, Guénée L, Bürgi T, Lacour J. [CpRu]-Catalyzed Carbene Insertions into Epoxides: 1,4-Dioxene Synthesis through SN1-Like Chemistry with Retention of Configuration. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201402994] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Toumi I, Torrésani B, Caldarelli S. Effective Processing of Pulse Field Gradient NMR of Mixtures by Blind Source Separation. Anal Chem 2013; 85:11344-51. [DOI: 10.1021/ac402085x] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Ichrak Toumi
- Aix Marseille Université, CNRS, Centrale
Marseille, iSm2 UMR 7313, 13397, Marseille, France
| | - Bruno Torrésani
- Aix Marseille Université, CNRS, Centrale Marseille, LATP
UMR 7353, 13453, Marseille, France
| | - Stefano Caldarelli
- Aix Marseille Université, CNRS, Centrale
Marseille, iSm2 UMR 7313, 13397, Marseille, France
- CNRS UPR 2301 ICSN 91190, Gif-sur-Yvette, France
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Perrone B, Springhetti S, Ramadori F, Rastrelli F, Mancin F. “NMR Chemosensing” Using Monolayer-Protected Nanoparticles as Receptors. J Am Chem Soc 2013; 135:11768-71. [DOI: 10.1021/ja406688a] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Barbara Perrone
- Dipartimento di Scienze Chimiche, Università di Padova, via Marzolo 1, 35131 Padova, Italy
| | - Sara Springhetti
- Dipartimento di Scienze Chimiche, Università di Padova, via Marzolo 1, 35131 Padova, Italy
| | - Federico Ramadori
- Dipartimento di Scienze Chimiche, Università di Padova, via Marzolo 1, 35131 Padova, Italy
| | - Federico Rastrelli
- Dipartimento di Scienze Chimiche, Università di Padova, via Marzolo 1, 35131 Padova, Italy
| | - Fabrizio Mancin
- Dipartimento di Scienze Chimiche, Università di Padova, via Marzolo 1, 35131 Padova, Italy
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