Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Frustrated smectic layer structures in bent-shaped dimer liquid crystals studied by x-ray microbeam diffraction.

Yoichi Takanishi1, Megumi Toshimitsu, Michi Nakata

  • 1Department of Organic and Polymeric Materials, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo 152-8552, Japan.

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|February 7, 2007
PubMed
Summary

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Percutaneous endoscopic gastropexy for postcolostomy internal hernia of the stomach: a rare case report.

Journal of surgical case reports·2026
Same author

General perception of the diversification of child-rearing environments in Japan.

Frontiers in sociology·2026
Same author

Microanatomical characterization and histochemistry of the Siamese dwarf rasbora, Trigonostigma somphongsi (Meinken, 1958), a critically endangered species in Thailand: Implicating to the conservative biology.

Journal of fish biology·2026
Same author

Robot-assisted anterior resection for rectal cancer in a patient with Leriche syndrome: a case report.

Clinical journal of gastroenterology·2026
Same author

Orthogonal Staggered Alignment of Molecular Chains in Aramid Whiskers: A Game-Changer for Sustainable, High-Performance Composites.

Macromolecular rapid communications·2026
Same author

Chirality inversion in cholesteric phases of bent-shaped liquid crystal dimers with chiral dopants.

RSC advances·2025

The study reveals how bent-shaped liquid crystal dimer structures evolve with increasing chain length, transitioning from single to complex frustrated and switchable frustrated-layer arrangements, with a suggested anticlinic antiferroelectric structure for m=16.

Area of Science:

  • Materials Science
  • Condensed Matter Physics
  • Crystallography

Background:

  • Bent-shaped liquid crystal dimers, characterized by two mesogenic units linked by an alkylene spacer, exhibit unique molecular architectures.
  • Understanding the layer structures in these bent-shaped molecules is crucial for their application in advanced materials and devices.

Purpose of the Study:

  • To investigate the influence of terminal chain length on the layer structures of bent-shaped liquid crystal dimers (mOAM5AMOm, m=6-16).
  • To elucidate the structural transitions and identify potential ordering in these systems.

Main Methods:

  • X-ray microbeam diffraction was employed to analyze the layer structures.
  • The study systematically varied the odd-numbered alkylene spacer length (m) from 6 to 16.

Related Experiment Videos

Main Results:

  • A transition from single-layer structures (m=6) to frustrated-layer structures (m=8, 10, 12) was observed with increasing chain length.
  • Further increase in chain length led to switchable frustrated-layer structures (m=14, 16).
  • An anticlinic antiferroelectric structure is proposed for the m=16 compound, based on distinct electric-field-induced reorientation behavior.

Conclusions:

  • Terminal chain length significantly dictates the layer structure evolution in bent-shaped liquid crystal dimers.
  • The observed structural complexity, including frustrated and switchable frustrated phases, highlights the versatility of these molecules.
  • The findings suggest potential for tailored molecular design for specific electro-optic properties.