lecture5 - Integrate over all space for a “powder” MLVs...

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PE: Hydration, enthalpy and entropy
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Intermediate structures Between Phases
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31 P Solid State NMR of lipid assemblies Breath, anisotropy and isotropic chemical shifts
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Solution Vs Solid State NMR Fast isotropic tumbling Slow to no molecular reorientation Isotropic chemical shifts narrow lines J couplings Chemical shift powder patterns broad lines dipolar broadening quadrupolar broadening 2 H NMR - quadrupole nuclei 31 P NMR- S=1/2 nuclei
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Magnetic Anisotropic Interactions Chemical shielding/chemical shift
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Chemical Shift Dependence Upon Orientation
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Unformatted text preview: Integrate over all space for a “powder” MLVs and GUVs act as powders. They are large enough to tumble slowly enough NOT to average the CSA and 2H quad interaction Chemical Shift Dependence for Crystals Dry powder • Restricted motions • mixtures of different lipids • mixtures of different phases • exchange rates Exchange Between Two Sites: Effects on NMR Lineshapes Two states: A and B Hydration effects (entropic) on L α to H II phase for DOPE...
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