Novel techniques for observing structural dynamics of photoresponsive liquid crystals

Masaki Hada, Shohei Saito, Ryuma Sato, Kiyoshi Miyata, Yasuhiko Hayashi, Yasuteru Shigeta, Ken Onda

Research output: Contribution to journalArticle

Abstract

We discuss in this article the experimental measurements of the molecules in liquid crystal (LC) phase using the time-resolved infrared (IR) vibrational spectroscopy and time-resolved electron diffraction. Liquid crystal phase is an important state of matter that exists between the solid and liquid phases and it is common in natural systems as well as in organic electronics. Liquid crystals are orientationally ordered but loosely packed, and therefore, the internal conformations and alignments of the molecular components of LCs can be modified by external stimuli. Although advanced time-resolved diffraction techniques have revealed picosecond-scale molecular dynamics of single crystals and polycrystals, direct observations of packing structures and ultrafast dynamics of soft materials have been hampered by blurry diffraction patterns. Here, we report time-resolved IR vibrational spectroscopy and electron diffractometry to acquire ultrafast snapshots of a columnar LC material bearing a photoactive core moiety. Differential-detection analyses of the combination of time-resolved IR vibrational spectroscopy and electron diffraction are powerful tools for characterizing structures and photoinduced dynamics of soft materials.

Original languageEnglish
Article numbere57612
JournalJournal of Visualized Experiments
Volume2018
Issue number135
DOIs
Publication statusPublished - May 29 2018

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Liquid Crystals
Structural dynamics
Vibrational spectroscopy
Liquid crystals
Infrared spectroscopy
Spectrum Analysis
Electron diffraction
Electrons
Bearings (structural)
Polycrystals
Molecular Conformation
Diffraction patterns
Conformations
Molecular dynamics
Molecular Dynamics Simulation
Electronic equipment
Diffraction
Single crystals
Molecules
Liquids

All Science Journal Classification (ASJC) codes

  • Neuroscience(all)
  • Chemical Engineering(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Immunology and Microbiology(all)

Cite this

Novel techniques for observing structural dynamics of photoresponsive liquid crystals. / Hada, Masaki; Saito, Shohei; Sato, Ryuma; Miyata, Kiyoshi; Hayashi, Yasuhiko; Shigeta, Yasuteru; Onda, Ken.

In: Journal of Visualized Experiments, Vol. 2018, No. 135, e57612, 29.05.2018.

Research output: Contribution to journalArticle

Hada, Masaki ; Saito, Shohei ; Sato, Ryuma ; Miyata, Kiyoshi ; Hayashi, Yasuhiko ; Shigeta, Yasuteru ; Onda, Ken. / Novel techniques for observing structural dynamics of photoresponsive liquid crystals. In: Journal of Visualized Experiments. 2018 ; Vol. 2018, No. 135.
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