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Zagdoun A, Casano G, Ouari O, Lapadula G, Rossini AJ, Lelli M, Baffert M, Gajan D, Veyre L, Maas WE, Rosay M, Weber RT, Thieuleux C, Coperet C, Lesage A, Tordo P, Emsley L. A slowly relaxing rigid biradical for efficient dynamic nuclear polarization surface-enhanced NMR spectroscopy: expeditious characterization of functional group manipulation in hybrid materials. J Am Chem Soc 2012; 134:2284-91. [PMID: 22191415 DOI: 10.1021/ja210177v] [Citation(s) in RCA: 147] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A new nitroxide-based biradical having a long electron spin-lattice relaxation time (T(1e)) has been developed as an exogenous polarization source for DNP solid-state NMR experiments. The performance of this new biradical is demonstrated on hybrid silica-based mesostructured materials impregnated with 1,1,2,2-tetrachloroethane radical containing solutions, as well as in frozen bulk solutions, yielding DNP enhancement factors (ε) of over 100 at a magnetic field of 9.4 T and sample temperatures of ~100 K. The effects of radical concentration on the DNP enhancement factors and on the overall sensitivity enhancements (Σ(†)) are reported. The relatively high DNP efficiency of the biradical is attributed to an increased T(1e), which enables more effective saturation of the electron resonance. This new biradical is shown to outperform the polarizing agents used so far in DNP surface-enhanced NMR spectroscopy of materials, yielding a 113-fold increase in overall sensitivity for silicon-29 CPMAS spectra as compared to conventional NMR experiments at room temperature. This results in a reduction in experimental times by a factor >12,700, making the acquisition of (13)C and (15)N one- and two-dimensional NMR spectra at natural isotopic abundance rapid (hours). It has been used here to monitor a series of chemical reactions carried out on the surface functionalities of a hybrid organic-silica material.
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Bardelang D, Giorgi M, Hornebecq V, Stepanov A, Rizzato E, Zaman MB, Chan G, Ouari O, Tordo P. Perturbation induced formation of a 3D-network of microcrystals producing soft materials. RSC Adv 2012. [DOI: 10.1039/c2ra20208e] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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53
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Rossini AJ, Zagdoun A, Lelli M, Canivet J, Aguado S, Ouari O, Tordo P, Rosay M, Maas WE, Copéret C, Farrusseng D, Emsley L, Lesage A. Dynamic nuclear polarization enhanced solid-state NMR spectroscopy of functionalized metal-organic frameworks. Angew Chem Int Ed Engl 2011; 51:123-7. [PMID: 22086783 DOI: 10.1002/anie.201106030] [Citation(s) in RCA: 118] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2011] [Indexed: 11/10/2022]
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54
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Rossini AJ, Zagdoun A, Lelli M, Canivet J, Aguado S, Ouari O, Tordo P, Rosay M, Maas WE, Copéret C, Farrusseng D, Emsley L, Lesage A. Dynamic Nuclear Polarization Enhanced Solid-State NMR Spectroscopy of Functionalized Metal-Organic Frameworks. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201106030] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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55
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Zagdoun A, Rossini AJ, Gajan D, Bourdolle A, Ouari O, Rosay M, Maas WE, Tordo P, Lelli M, Emsley L, Lesage A, Copéret C. Non-aqueous solvents for DNP surface enhanced NMR spectroscopy. Chem Commun (Camb) 2011; 48:654-6. [PMID: 22034623 DOI: 10.1039/c1cc15242d] [Citation(s) in RCA: 113] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A series of non-aqueous solvents combined with the exogenous biradical bTbK are developed for DNP NMR that yield enhancements comparable to the best available water based systems. 1,1,2,2-tetrachloroethane appears to be one of the most promising organic solvents for DNP solid-state NMR. Here this results in a reduction in experimental times by a factor of 1000. These new solvents are demonstrated with the first DNP surface enhanced NMR characterization of an organometallic complex supported on a hydrophobic surface.
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Lorenzi M, Puppo C, Lebrun R, Lignon S, Roubaud V, Martinho M, Mileo E, Tordo P, Marque SRA, Gontero B, Guigliarelli B, Belle V. Tyrosine-targeted spin labeling and EPR spectroscopy: an alternative strategy for studying structural transitions in proteins. Angew Chem Int Ed Engl 2011; 50:9108-11. [PMID: 21919142 DOI: 10.1002/anie.201102539] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2011] [Revised: 06/03/2011] [Indexed: 11/10/2022]
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57
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Lorenzi M, Puppo C, Lebrun R, Lignon S, Roubaud V, Martinho M, Mileo E, Tordo P, Marque SRA, Gontero B, Guigliarelli B, Belle V. Tyrosine-Targeted Spin Labeling and EPR Spectroscopy: An Alternative Strategy for Studying Structural Transitions in Proteins. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201102539] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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58
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Ouari O, Hardy M, Karoui H, Tordo P. Recent developments and applications of the coupled EPR/Spin trapping technique (EPR/ST). ELECTRON PARAMAGNETIC RESONANCE 2011. [DOI: 10.1039/9781849730877-00001] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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59
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Karoui H, Chalier F, Finet JP, Tordo P. DEPMPO: an efficient tool for the coupled ESR-spin trapping of alkylperoxyl radicals in water. Org Biomol Chem 2011; 9:2473-80. [DOI: 10.1039/c0ob00876a] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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60
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Bertin D, Gigmes D, Marque SRA, Tordo P. Kinetic subtleties of nitroxide mediated polymerization. Chem Soc Rev 2011; 40:2189-98. [DOI: 10.1039/c0cs00110d] [Citation(s) in RCA: 149] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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61
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Miéville P, Ahuja P, Sarkar R, Jannin S, Vasos PR, Gerber-Lemaire S, Mishkovsky M, Comment A, Gruetter R, Ouari O, Tordo P, Bodenhausen G. Berichtigung: Scavenging Free Radicals To Preserve Enhancement and Extend Relaxation Times in NMR using Dynamic Nuclear Polarization. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201090140] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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62
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Miéville P, Ahuja P, Sarkar R, Jannin S, Vasos PR, Gerber-Lemaire S, Mishkovsky M, Comment A, Gruetter R, Ouari O, Tordo P, Bodenhausen G. Corrigendum: Scavenging Free Radicals To Preserve Enhancement and Extend Relaxation Times in NMR using Dynamic Nuclear Polarization. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/anie.201090140] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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63
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Houriez C, Ferré N, Siri D, Tordo P, Masella M. Structure and Spectromagnetic Properties of the Superoxide Radical Adduct of the DMPO in Water: Elucidation by Theoretical Investigations. J Phys Chem B 2010. [DOI: 10.1021/jp109017k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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64
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Houriez C, Ferré N, Siri D, Tordo P, Masella M. Structure and Spectromagnetic Properties of the Superoxide Radical Adduct of DMPO in Water: Elucidation by Theoretical Investigations. J Phys Chem B 2010; 114:11793-803. [DOI: 10.1021/jp1033307] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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65
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Miéville P, Ahuja P, Sarkar R, Jannin S, Vasos P, Gerber-Lemaire S, Mishkovsky M, Comment A, Gruetter R, Ouari O, Tordo P, Bodenhausen G. Scavenging Free Radicals To Preserve Enhancement and Extend Relaxation Times in NMR using Dynamic Nuclear Polarization. Angew Chem Int Ed Engl 2010; 49:6182-5. [DOI: 10.1002/anie.201000934] [Citation(s) in RCA: 80] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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66
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Miéville P, Ahuja P, Sarkar R, Jannin S, Vasos P, Gerber-Lemaire S, Mishkovsky M, Comment A, Gruetter R, Ouari O, Tordo P, Bodenhausen G. Scavenging Free Radicals To Preserve Enhancement and Extend Relaxation Times in NMR using Dynamic Nuclear Polarization. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201000934] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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67
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Ysacco C, Rizzato E, Virolleaud MA, Karoui H, Rockenbauer A, Le Moigne F, Siri D, Ouari O, Griffin RG, Tordo P. Properties of dinitroxides for use in dynamic nuclear polarization (DNP). Phys Chem Chem Phys 2010; 12:5841-5. [PMID: 20458376 DOI: 10.1039/c002591g] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We have investigated the properties of a series of dinitroxides as polarizing agents for SS NMR/DNP applications. Our results clearly establish that an orthogonal relative orientation of electron g tensors is a crucial requirement to obtain high enhancement DNP factors. Moreover, the ratio of the proton Larmor frequency over the e(-)-e(-) dipolar coupling (omega(H)/omega(D)) influences the efficiency of the cross effect (CE) mechanism, thus the Ree distance between the unpaired electrons must be adapted to omega(H).
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68
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Ferroud-Plattet MP, Belorizky E, Berchadsky Y, Tordo P. Thermal Variation of the EPR Linewidth of new Phosphoniumyl Free Radicals for NMR Magnetometers. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/bbpc.19920961213] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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69
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Salnikov E, Rosay M, Pawsey S, Ouari O, Tordo P, Bechinger B. Solid-State NMR Spectroscopy of Oriented Membrane Polypeptides at 100 K with Signal Enhancement by Dynamic Nuclear Polarization. J Am Chem Soc 2010; 132:5940-1. [DOI: 10.1021/ja1007646] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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70
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Lansalot M, Guillaneuf Y, Luneau B, Acerbis S, Dufils PE, Gaudel-Siri A, Gigmes D, Marque SRA, Tordo P, Bertin D. A Step Towards High-Molecular-Weight Living/Controlled Polystyrene Using SG1-Mediated Polymerization. MACROMOL REACT ENG 2010. [DOI: 10.1002/mren.200900074] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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71
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Hardy M, Bardelang D, Karoui H, Rockenbauer A, Finet JP, Jicsinszky L, Rosas R, Ouari O, Tordo P. Improving the trapping of superoxide radical with a beta-cyclodextrin- 5-diethoxyphosphoryl-5-methyl-1-pyrroline-N-oxide (DEPMPO) conjugate. Chemistry 2010; 15:11114-8. [PMID: 19760720 DOI: 10.1002/chem.200901342] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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72
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Matsuki Y, Maly T, Ouari O, Karoui H, Le Moigne F, Rizzato E, Lyubenova S, Herzfeld J, Prisner T, Tordo P, Griffin RG. Dynamic nuclear polarization with a rigid biradical. Angew Chem Int Ed Engl 2009; 48:4996-5000. [PMID: 19492374 DOI: 10.1002/anie.200805940] [Citation(s) in RCA: 209] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
A new polarizing agent with superior performance in dynamic nuclear polarization experiments is introduced, and utilizes two TEMPO (2,2,6,6-tetramethylpiperidine-1-oxyl) moieties connected through a rigid spiro tether (see structure). The observed NMR signal intensities were enhanced by a factor of 1.4 compared to those of TOTAPOL, a previously described TEMPO-based biradical with a flexible tether.
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73
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Matsuki Y, Maly T, Ouari O, Karoui H, Le Moigne F, Rizzato E, Lyubenova S, Herzfeld J, Prisner T, Tordo P, Griffin R. Dynamic Nuclear Polarization with a Rigid Biradical. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200805940] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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74
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Bardelang D, Banaszak K, Karoui H, Rockenbauer A, Waite M, Udachin K, Ripmeester JA, Ratcliffe CI, Ouari O, Tordo P. Probing Cucurbituril Assemblies in Water with TEMPO-like Nitroxides: A Trinitroxide Supraradical with Spin−Spin Interactions. J Am Chem Soc 2009; 131:5402-4. [DOI: 10.1021/ja900306m] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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75
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Guillaneuf Y, Couturier JL, Gigmes D, Marque SRA, Tordo P, Bertin D. Synthesis of Highly Labile SG1-Based Alkoxyamines under Photochemical Conditions. J Org Chem 2008; 73:4728-31. [DOI: 10.1021/jo800422a] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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