Magnetization transfer in lamellar liquid crystals

摘要: Purpose This study examines the relationship between quantitative magnetization transfer (qMT) parameters and molecular composition of a model lamellar liquid crystal (LLC) system composed 1-decyl alcohol (decanol), sodium dodecyl sulfate (SDS), water. Methods Samples were made within stable mesophase to provide different ratios total semisolid protons (SDS + decanol) water protons. Data collected as function radiofrequency power, frequency offset, temperature. qMT estimated by fitting standard data. Fitting results four line shapes compared. Results A super-Lorentzian shape for component provided best fit. The amount semisolids was proportional ratio decanol-to-water Other exhibited nonlinear dependence on sample composition. Magnetization (MTR) linear fraction over limited range decanol concentration. Conclusion In LLC samples, MT originates from intramolecular nOe among aliphatic chain followed proton exchange hydroxyl water. Exchange kinetics is influenced SDS, although SDS do not participate in MT. These studies clinically relevant detected MTR. Magn Reson Med 72:1427–1434, 2014. © 2013 Wiley Periodicals, Inc.