1H and13C NMR study of phase transition and molecular motion in ionic liquids forming lyotropic liquid-crystalline ionogels

A series of biodegradable segmented liquid crystalline poly(ester-urethane)s were prepared by solution polymerization of poly(L-lactic acid) (PLLA), mesogenic diol prepolymer poly(butylene terephthaloyldioxy dibenzoates) (MD), and hexamethylene diisocyanate (HDI). The MD content was varied from 0 to 40 mol% so that the effects of the mesogen content on the thermal and physical properties, and hydrolytic degradation were examined respectively. It was found that introducing mesogens units could increase the thermal stability and the elastic properties, while reduced the phase transition temperatures and the hydrolytic degradation rate.

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Photoinduced Exfoliation of a Polymeric N ‐Benzylideneaniline Liquid‐Crystalline Composite Based on a Photoisomerization‐Triggered Phase Transition

Macromolecular Chemistry and Physics ◽

10.1002/macp.202100097 ◽

2021 ◽

pp. 2100097

Author(s):

Mizuho Kondo ◽

Daijoro Kojima ◽

Naoya Ootsuki ◽

Nobuhiro Kawatsuki

Keyword(s):

Phase Transition ◽

Liquid Crystalline

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Kerr effect studies of the isotropic-smectic phase transition of liquid crystalline 4-nitrophenyl 4-n-alkoxybenzoates

Kristall und Technik ◽

10.1002/crat.19810160311 ◽

1981 ◽

Vol 16 (3) ◽

pp. 345-348 ◽

Cited By ~ 2

Author(s):

A. Hauser ◽

D. Demus

Keyword(s):

Phase Transition ◽

Kerr Effect ◽

Liquid Crystalline ◽

Smectic Phase

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Molecular Motion, Dielectric Response, and Phase Transition of Charge-Transfer Crystals: Acquired Dynamic and Dielectric Properties of Polar Molecules in Crystals

Journal of the American Chemical Society ◽

10.1021/jacs.5b00412 ◽

2015 ◽

Vol 137 (13) ◽

pp. 4477-4486 ◽

Cited By ~ 48

Author(s):

Jun Harada ◽

Masaki Ohtani ◽

Yukihiro Takahashi ◽

Tamotsu Inabe

Keyword(s):

Phase Transition ◽

Charge Transfer ◽

Dielectric Properties ◽

Dielectric Response ◽

Molecular Motion ◽

Polar Molecules

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Surface Ordering and Finite-size Effects at the First Order Phase Transition SmA-SmC in Liquid-crystalline Free-standing Films

Berichte der Bunsengesellschaft für physikalische Chemie ◽

10.1002/bbpc.19930971033 ◽

1993 ◽

Vol 97 (10) ◽

pp. 1376-1380 ◽

Cited By ~ 10

Author(s):

I. Kraus ◽

P. Pieranski ◽

E. Demikhov ◽

H. Stegemeyer ◽

J. Goodby ◽

...

Keyword(s):

Phase Transition ◽

Size Effects ◽

Liquid Crystalline ◽

Finite Size ◽

Free Standing ◽

Finite Size Effects ◽

First Order ◽

Surface Ordering ◽

First Order Phase Transition ◽

First Order Phase

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Characterization of some mesogenic alkyl 1-thioglycosides

Canadian Journal of Chemistry ◽

10.1139/v02-157 ◽

2002 ◽

Vol 80 (8) ◽

pp. 1162-1165 ◽

Cited By ~ 2

Author(s):

B Henrissat ◽

G K Hamer ◽

M G Taylor ◽

R H Marchessault

Keyword(s):

Phase Transition ◽

Liquid Crystal ◽

Solid State ◽

Solid State Nmr ◽

Liquid Crystalline ◽

Liquid Crystal Phase ◽

X Ray Diffraction ◽

X Ray ◽

Liquid Crystalline Phases

A series of dodecyl 1-thio-β-D-glycosides has been synthesized and characterized (DSC, NMR, CP MAS, X-ray diffraction) as possible new marking materials with liquid-crystalline properties. These compounds undergo solid to liquid crystal phase transitions at various temperatures, which depend on the nature of the carbohydrate part of the structure. Their liquid-crystalline phases show extreme shear thinning behaviour.Key words: liquid crystal, powder X-ray diffraction, phase transition, thioglycoside, solid-state NMR, marking material

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