Abstract
A simple model of non-Markovian molecular reorientation is applied to multidimensional NMR experiments in supercooled liquids and polymers close to the glass transition. The process of exchange between components of a correlation time distribution is related with the notions ‘‘exponential/nonexponential, homogeneous/heterogeneous, Markovian/non-Markovian, and ergodic/nonergodic’’ often used in relation with molecular dynamics in viscous systems. By working out a detailed example of two-state exchange the difference between 2D and reduced 4D-spectra with respect to the mechanism and dynamics of molecular reorientation in complex liquids is elucidated.
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Dates
Type | When |
---|---|
Created | 23 years ago (July 26, 2002, 8:34 a.m.) |
Deposited | 1 year, 6 months ago (Feb. 7, 2024, 5:59 a.m.) |
Indexed | 1 year, 6 months ago (Feb. 11, 2024, 1:06 a.m.) |
Issued | 29 years, 4 months ago (April 1, 1996) |
Published | 29 years, 4 months ago (April 1, 1996) |
Published Print | 29 years, 4 months ago (April 1, 1996) |
@article{Sillescu_1996, title={Multidimensional nuclear magnetic resonance in complex liquids analyzed by a simple model for non-Markovian molecular reorientation}, volume={104}, ISSN={1089-7690}, url={http://dx.doi.org/10.1063/1.471121}, DOI={10.1063/1.471121}, number={13}, journal={The Journal of Chemical Physics}, publisher={AIP Publishing}, author={Sillescu, Hans}, year={1996}, month=apr, pages={4877–4886} }