Frequency dependence of proton relaxation in liquid crystals
| Autor: | Chas. G. Wade, B. M. Fung, Richard D. Orwoll |
|---|---|
| Rok vydání: | 1976 |
| Předmět: |
Proton
Chemistry Relaxation (NMR) Intermolecular force Analytical chemistry General Physics and Astronomy biochemical phenomena metabolism and nutrition Isotope dilution Nuclear magnetic resonance Deuterium Liquid crystal Intramolecular force Kinetic isotope effect Physical and Theoretical Chemistry |
| Zdroj: | The Journal of Chemical Physics. 64:148-149 |
| ISSN: | 1089-7690 0021-9606 |
| DOI: | 10.1063/1.431965 |
| Popis: | The proton spin–lattice relaxation time (T1) of liquid crystalline methyl‐deuterated p‐azoxyanisole (PAA‐d6) was measured at four frequencies as a function of its concentration in perdeuterated PAA. Analysis of the isotope dilution data showed that the intermolecular contribution to the relaxation rate becomes more important at lower frequencies, and in intramolecular contribution has a less pronounced frequency dependence than the intermolecular part. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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