6533b7cefe1ef96bd1257b5e
RESEARCH PRODUCT
On the blue phase structure of hydrogen-bonded liquid crystals via 19F NMR
Ronald Y. DongMichael GieseMarco SacconeCarl A. MichalChristoph WölperMatthias Spenglersubject
Materials scienceHydrogenSpectral simulationChemieGeneral Physics and Astronomychemistry.chemical_elementBlue phase IDouble-twisted substructure02 engineering and technologyFluorine-19 NMR010402 general chemistryKinetic energy01 natural sciencesMolecular physicsSpectral lineDiffusion rateLiquid crystalLattice (order)Physical and Theoretical Chemistry021001 nanoscience & nanotechnologyFluorine NMR0104 chemical sciencesNMR spectra databasechemistrySubstructureSettore CHIM/07 - Fondamenti Chimici Delle Tecnologie0210 nano-technologyChiral nematicdescription
Abstract 19 F NMR spectra are simulated for blue phase I of FPHG( St 1.5 ∗ Ap 1.5 ) based on a model of a double-twisted substructure inside cylinders that form a body-centred cubic lattice. A kinetic matrix is included to describe jump processes over quarter pitch lengths. Though the lines in the NMR spectra are broad and featureless, changes in the widths and positions with temperature are well described by the blue phase model structure. The spectra in the chiral nematic N∗ phase are also simulated. Dynamics in the BP I are found to be slower than in the N∗ phase.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2018-10-01 |