Exploring the behaviour of the twist-bend nematic phase using NMR with a variety of spin probes
- Resource Type
- Authors
- Cristina Greco; Geoffrey R. Luckhurst; Herbert Zimmermann; Bakir A. Timimi; Alberta Ferrarini
- Source
- Liquid Crystals
- Subject
- Materials science
deuterium NMR
Dimer
orientational order
02 engineering and technology
01 natural sciences
chemistry.chemical_compound
twist-bend nematic, deuterium NMR, spin probes, orientational order, atomistic modelling
Liquid crystal
Phase (matter)
Molecule
General Materials Science
Twist
Spin (physics)
010405 organic chemistry
General Chemistry
021001 nanoscience & nanotechnology
Condensed Matter Physics
0104 chemical sciences
Condensed Matter::Soft Condensed Matter
atomistic modelling
chemistry
Chemical physics
Condensed Matter::Strongly Correlated Electrons
twist-bend nematic
0210 nano-technology
spin probes
- Language
- ISSN
- 1366-5855
0267-8292
Here we discuss the use of deuteriated probe molecules in NMR studies of the nematic (N) and twist-bend nematic (NTB) phases formed by the generic liquid crystal dimer CB7CB. The key properties of three probes dissolved in the NTB phase investigated are the orientational order Szz B and the conical angle, θ0, of the director with respect to the spectrometer field. In addition for one probe 5CB-d2 it is possible to obtain a measure of the phase chirality from the difference in the quadrupolar splittings given by the prochiral pair of deuterons. The relative simplicity of the probes facilitates the determination of the key properties which are obtained using two different approaches.