6533b855fe1ef96bd12b11f5
RESEARCH PRODUCT
Dynamic heterogeneity in supercooled ortho-terphenyl studied by multidimensional deuteron NMR
Gregor DiezemannBurkhard GeilGerald HinzeHans SillescuRoland Böhmersubject
chemistry.chemical_compoundMaterials scienceNuclear magnetic resonancechemistryDeuteriumChemical physicsTerphenylGeneral Physics and AstronomyStimulated echoSupercooling530description
Using deuteron NMR, we have studied molecular reorientation rates and rate exchange processes in supercooled ortho-terphenyl. We monitor the re-equilibration of differently selected subensembles through four-time stimulated echo experiments. A comparison of the two-time with the four-time echoes suggests that the characteristic time scales for reorientation and dynamical exchange are relatively similar. The four-time correlation functions were described using various multi-state rate exchange models.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1996-10-01 |