publication . Article . 2007

self alignment of liquid crystal molecules on polydiacetylene langmuir blodgett films

Akira Murayama; Yasuhiro Niida; Yasuko Koshiba; Yasukiyo Ueda;
Open Access
  • Published: 19 Feb 2007 Journal: Molecular Crystals and Liquid Crystals, volume 464, pages 119/[701]-126/[708] (issn: 1542-1406, eissn: 1563-5287, Copyright policy)
  • Publisher: Informa UK Limited
Alignment structure and optical properties of Langmuir-Blodgett (LB) films of urethane-substituted polydiacetylene (poly-4BCMU) was investigated. During compression, the coil to rod transition in molecular conformation of poly-4BCMU was induced and the polymer main chains were aligned perpendicular to the compressing direction. The dichroic ratio of absorption intensity of poly-4BCMU monolayer film was about 6. LC molecules were sandwiched with two glass plates covered with the poly-4BCMU monolayer films. LC molecules aligned spontaneously along the main chain direction of poly-4BCMU in the parallel cell. On the other hand, they formed a twisted structure of 90°...
free text keywords: General Materials Science, General Chemistry, Condensed Matter Physics, Langmuir–Blodgett film, Photochemistry, Liquid crystal, Crystallography, Chemistry, Monolayer, Polymer, chemistry.chemical_classification, Perpendicular, Molecule, Dichroic glass, Nanotechnology, Absorption (pharmacology)
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