[.sup.13.C] and [.sup.2.H] NMR study of structure and dynamics in banana [B.sub.2] phase of a bent-core mesogen

Article Abstract:

The difficulty in orientating the [B.sub.2] phase of the banana mesogen 1,3-Phenylene-bis 4-[4-(10-undecenyloxy)-benzoyloxy] benzoate in a relatively high magnetic field is reported based on some observations using both [.sup.13.C] and [.sup.2.H] NMR. The observed [.sup.2.H] NMR spectra could be justified assuming that in the bulk [B.sub.2] phase, there is an isotropic distribution of domains, which do not orient in a particular direction relative to the magnetic field.

Electronic components, not elsewhere classified, Other Electronic Component Manufacturing, Fruits and tree nuts, not elsewhere classified, Liquid Crystals, Other Noncitrus Fruit Farming, Bananas, Magnetic properties, Banana

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Deuterium NMR of the TGBA phase in chiral liquid crystals

Article Abstract:

A deuterium NMR study of the twist grain boundary smectic A* (TGBA*) phase in an NMR magnetic field of 9.4 T for the chiral compound 4-[4'-(1-methyl heptyloxy) biphenyl 4-(10-undecenyloxy) benzoate (11EB1M7) is reported. A comparison of the experimental and simulated spectra finds an accurate determination of the dynamic parameters in the TGBA* phase.

Chirality, Optical properties, Chemical properties, X-ray analysis

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Deuterium and carbon-13 NMR study of a banana mesogen: molecular structure and order

Article Abstract:

2H and 13C NMR is used to study the orientional order and the molecular of the banana mesogen 4-chloro-1,3-phenylene bis{4,4'-(11-undecenyloxy)benzoyloxy}benzoate in its nematic phase. The comparison of (super 2)H and (super 13)C NMR helps in understanding the real structure of banana-shaped compounds in their mesophases.

Molecular structure, Carbon compounds

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