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Poster 02 Abstract Multi-dynamics study of crude oils by high field 2D-NMR DOSY <strong>and</strong> relaxometry Alain Louis-Joseph, Lyès Benamsili <strong>and</strong> Jean-Pierre Korb Physique de la Matière Condensée, Ecole Polytechnique-CNRS, 91128 Palaiseau, France We propose using a set of non-invasive multiscale NMR techniques for probing the structure <strong>and</strong> dynamics of bulk <strong>and</strong> confined crude oils with <strong>and</strong> without asphaltene. High field NMR spectroscopy identifies the proton species. 2D NMR DOSY spectra for bulk crude oils in presence or absence of asphaltene favor an interpretation of two populations of hydrocarbon aliphatic chains in two environments. In the presence of asphaltene, an analysis of the distributions of longitudinal relaxation time, T 1 , in terms of a bimodal log-normal distribution, confirms the two environments clearly evidenced by varying the Larmor frequency. The remarkable features of the nuclear magnetic relaxation dispersion (NMRD) of for bulk <strong>and</strong> confined crude oils with <strong>and</strong> without asphaltene have been interpreted with an original model of intermittent surface dynamics of proton species at the surface of asphaltene nanoaggregates <strong>and</strong> bulk dynamics in between the clusters of these nanoaggregates. <strong>8th</strong> <strong>Conference</strong> on Fast Field Cycling NMR Relaxometry, Turin 23-25 May 2013
Poster 03 Abstract The effect of cholesterol on membrane molecular dynamics in unilamellar vesicles: a fast field-cycling NMR relaxometry study. Carla C. Fraenza <strong>and</strong> E. Anoardo Laboratorio de Relaxometría y Técnicas Especiales (LaRTE), Facultad de Matemática, Astronomía y Física, Universidad Nacional de Córdoba <strong>and</strong> IFEG (CONICET), Córdoba, Argentina C. Meled<strong>and</strong>ri <strong>and</strong> D. Brougham National Institute for Cellular Biotechnology, School of Chemical Sciences, Dublin City University, Dublin 9, Irel<strong>and</strong> Fast field cycling (FFC) 1 H NMR spin-lattice relaxation rate dispersions of liposomes have been explained by a physical model that accounts for the molecular <strong>and</strong> collective dynamics of the lipids [1,2]. The FFC NMR method turned to be a useful tool for the study of the molecular dynamics of lipids <strong>and</strong> the viscoelastic properties of membranes composed of a single lipid type. It has been claimed that in the case of cholesterol containing membranes, the system remains in the disordered liquid crystalline phase (l d ) up to a certain concentration of the sterol [3,4]. However, other authors define a region around each cholesterol molecule within which lipids become strongly ordered, partitioning the lipid population into affected <strong>and</strong> unaffected pools, depending on the proximity to a cholesterol molecule [5-9]. The unaffected lipids are considered to be in the l d phase, while the affected lipids are described as being in an ordered liquid crystalline phase (l o ). In this work we confront both interpretations with new experimental data, as a further refinement of our model. We analyze experimental FFC relaxation rate dispersion curves obtained at 298 K for liposomes of radius between 68 <strong>and</strong> 80 nm composed of DOPC <strong>and</strong> cholesterol at 10 <strong>and</strong> 25 mol%. The consistency obtained by this analysis suggests that the model, previously used to explain the relaxation rate dispersions in single lipid membranes, can be extended for the study of cholesterol containing liposomes. References: [1] Meled<strong>and</strong>ri C. J., Perlo J., Farrher E., Brougham D. F., Anoardo E., J. Phys. Chem. B, 2009, 11, 15532. [2] Perlo J., Meled<strong>and</strong>ri C. J., Anoardo E., Brougham D. F. J. Phys. Chem. B, 2011, 115, 3444. [3] Filippov A., Orädd G., Lindblom G. Biophys. J. 2003, 84, 3079. [4] Filippov A., Orädd G., Lidblom G., Langmuir 2003, 19, 6397. [5] Edholm O., Nyberg A. M., Biophys J. 1992, 63, 1081. [6] Robinson A. J., Richards W. G., Thomas P. J., Hann M. M. Biophys J. 1995, 68, 164. [7] Chiu S. W., Jakobsson E., Mashl R. J., Scott H. L. Biophys J. 2002, 83, 1842. [8] Jedlovszky P., Mezei M., J. Phys. Chem. B, 2003, 107, 5311. [9] Dai J., Alwarawrah M., Huang J. J. Phys. Chem. B, 2010, 114, 840. <strong>8th</strong> <strong>Conference</strong> on Fast Field Cycling NMR Relaxometry, Turin 23-25 May 2013
Page 2 and 3: 8th Confer
Page 4 and 5: Main sponsors The Organizing Commit
Page 6 and 7: Friday 24 May, 2013 Chair: Silvio A
Page 8 and 9: 8 th Conference on
Page 12 and 13: Oral 02 Abstract CHARACTERIZATION O
Page 14 and 15: Oral 04 Abstract Fundamental <stron
Page 16 and 17: Oral 06 Abstract TRANSIENT ACCESS T
Page 18 and 19: Oral 08 Abstract Relaxometry for so
Page 20 and 21: Oral 10 Abstract Spin-Relaxation Ef
Page 22 and 23: Oral 12 Abstract Phase-gradient coi
Page 24 and 25: Oral 14 Abstract Initial Characteri
Page 26 and 27: Oral 16 Abstract The Interplay of M
Page 28 and 29: Oral 18 Abstract Water dynamics at
Page 30 and 31: Oral 20 NMR relaxation of fluids co
Page 32 and 33: Oral 22 Abstract Theory and
Page 34 and 35: Oral 24 Abstract Using Relaxometry
Page 36 and 37: Oral 26 Abstract NMR relaxometry <s
Page 38 and 39: Oral 28 Abstract DYNAMICS OF P3HT I
Page 40 and 41: Oral 30 Abstract Field-cycling doub
Page 44 and 45: List of Posters POSTER 1 D.G. Gadia
Page 46 and 47: List of Posters POSTER 20 A. Korpal
Page 50 and 51: Poster 04 Abstract Application of F
Page 52 and 53: Poster 06 Abstract Multiscale dynam
Page 54 and 55: Poster 08 Abstract Field-Cycling Ov
Page 56 and 57: Poster 10 Abstract Angular dependen
Page 58 and 59: Poster 12 Abstract A Straightforwar
Page 60 and 61: Poster 14 Abstract Fast-field cycli
Page 62 and 63: Poster 16 Abstract Rapid Field-Cycl
Page 64 and 65: Poster 18 Abstract NMR Relaxation-V
Page 66 and 67: Poster 20 Abstract 1 H relaxation i
Page 68 and 69: Poster 22 Abstract Cryogen-Free Sup
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Page 72 and 73: Poster 26 Abstract R-ELISA: A quant

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