Proton nmr studies of smectic phases of three n-(4-n-alkyloxybenzylidene)-4'-n-alkylanilines (n0 . m's)

Limmer, St.; Schiffler, J.; Findeisen, Matthias

doi:10.1051/jphys:019840045070114900

J. Phys. France

1984

DOI: 10.1051/jphys:019840045070114900

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Proton nmr studies of smectic phases of three n-(4-n-alkyloxybenzylidene)-4'-n-alkylanilines (n0 . m's)

St. Limmer

J. Schiffler

Matthias Findeisen

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Cited by 3 publications

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Physical Principles Underlying the Experimental Methods for Studying the Orientational Order of Liquid Crystals

Limmer

1989

Fortschr. Phys.

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The basic physical principles underlying different experimental methods frequently used for the determination of orientational order parameters of liquid crystals are reviewed. The methods that are dealt with here include the anisotropy of the diamagnetic susceptibility, birefringence, linear dichroism, Raman scattering, fluorescence depolarization, electron paramagnetic resonance (EPR), and nuclear magnetic resonance (NMR). The fundamental assertions that can be obtained by the different methods as well as their advantages, drawbacks and limitations are inspected. Typical sources of uncertainties and inaccuracies are discussed. To quantitatively evaluate the experimental data with reference to the orientational order the general tensor formalism developed by Schmiedel (Wiss. Z. KMU Leipzig, Math.‐Naturwiss. R. 33 (1984) 441) was employed throughout according to which the order matrix comprises 25 real elements yet. Within this context the interplay of orientational ordering and molecular conformation is scrutinized.

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Physical Principles Underlying the Experimental Methods for Studying the Orientational Order of Liquid Crystals

Limmer

1989

Fortschr. Phys.

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Pulsed NMR study of molecular dynamics in liquid crystal 40.7

1990

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Nuclear magnetic relaxation study of the nematic-smectic (G) transition

et al. 1988

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Proton nmr studies of smectic phases of three n-(4-n-alkyloxybenzylidene)-4'-n-alkylanilines (n0 . m's)

Cited by 3 publications

References 22 publications

Physical Principles Underlying the Experimental Methods for Studying the Orientational Order of Liquid Crystals

Physical Principles Underlying the Experimental Methods for Studying the Orientational Order of Liquid Crystals

Pulsed NMR study of molecular dynamics in liquid crystal 40.7

Nuclear magnetic relaxation study of the nematic-smectic (G) transition

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