About: Twist grain boundary liquid-crystalline phases under the effect of the magnetic field: A complete 2H and 13C NMR     Goto   Sponge   NotDistinct   Permalink

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Description
  • A rod-like liquid crystalline mesogen containing (S)-2-methylbutyl-(S)-lactate unit in the chiral chain, whose acronym is HZL7/*, has been investigated by means of 2H NMR at two different magnetic fields. This mesogen presents peculiar mesomorphic properties, the TGBA* and TGBC* phases in a wide temperature range up to 60 K, and an additional phase transition from TGBC1* to TGBC2* has been identified. 2H NMR measurements performed on the HZL7/* labelled on the phenyl fragment allowed us to show a peculiar magnetic effect in unwinding the supramolecular structure of both TGBA* and TGBC* phases. Moreover, the analysis of the 2H NMR spectra of HZL7/* allowed us to obtain several structural properties of the studied mesophases, such as the tilt angle of the TGBC* phases and the orientational order parameter referred to the phenyl fragment in the whole mesomorphic range. High resolution 13C NMR study in the unwound TGBA* and TGBC* phases of HZL 7/* is reported.
  • A rod-like liquid crystalline mesogen containing (S)-2-methylbutyl-(S)-lactate unit in the chiral chain, whose acronym is HZL7/*, has been investigated by means of 2H NMR at two different magnetic fields. This mesogen presents peculiar mesomorphic properties, the TGBA* and TGBC* phases in a wide temperature range up to 60 K, and an additional phase transition from TGBC1* to TGBC2* has been identified. 2H NMR measurements performed on the HZL7/* labelled on the phenyl fragment allowed us to show a peculiar magnetic effect in unwinding the supramolecular structure of both TGBA* and TGBC* phases. Moreover, the analysis of the 2H NMR spectra of HZL7/* allowed us to obtain several structural properties of the studied mesophases, such as the tilt angle of the TGBC* phases and the orientational order parameter referred to the phenyl fragment in the whole mesomorphic range. High resolution 13C NMR study in the unwound TGBA* and TGBC* phases of HZL 7/* is reported. (en)
  • Kapalně-krystalický mesogen, jehož tyčinkovitá molekula obsahuje (S)-2-metylbutyl laktátovou jednotku v jádře molekuly, byl studován metodou nukleaární magnetické rezonance (NMR) pro různé velikosti měřícího magnetického pole. Tento mesogen v různých teplotních intervalech vykazuje několik TGB fází, které se pomocí NMR měření podařilo určit a upřesnit strukturu těchto fází. (cs)
Title
  • Twist grain boundary liquid-crystalline phases under the effect of the magnetic field: A complete 2H and 13C NMR
  • Twist grain boundary liquid-crystalline phases under the effect of the magnetic field: A complete 2H and 13C NMR (en)
  • TGB kapalně-krystalické fáze pod vlivem magnetického pole: úplná 2H a 13C NMR spektroskopie (cs)
skos:prefLabel
  • Twist grain boundary liquid-crystalline phases under the effect of the magnetic field: A complete 2H and 13C NMR
  • Twist grain boundary liquid-crystalline phases under the effect of the magnetic field: A complete 2H and 13C NMR (en)
  • TGB kapalně-krystalické fáze pod vlivem magnetického pole: úplná 2H a 13C NMR spektroskopie (cs)
skos:notation
  • RIV/68378271:_____/08:00312686!RIV09-AV0-68378271
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(OC 175), Z(AV0Z10100520)
http://linked.open...iv/cisloPeriodika
  • 4
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 400924
http://linked.open...ai/riv/idVysledku
  • RIV/68378271:_____/08:00312686
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • liquid crystals; solid state NMR spectroscopy; TGB phases (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • DE - Spolková republika Německo
http://linked.open...ontrolniKodProRIV
  • [E546DBE32B9F]
http://linked.open...i/riv/nazevZdroje
  • ChemPhysChem
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...vavai/riv/projekt
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 9
http://linked.open...iv/tvurceVysledku
  • Novotná, Vladimíra
  • Domenici, V.
  • Veracini, C. A.
  • Dong, R. Y.
http://linked.open...ain/vavai/riv/wos
  • 000254461300008
http://linked.open...n/vavai/riv/zamer
issn
  • 1439-4235
number of pages
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