Quasi-Liquid Crystalline Materials with Special Electro-Optic Properties.
Abstract
In the research proposal submitted to the European Research Office of the US Army we have described a new type of organic material, quasi-liquid crystals (QLC's) obtained by us from thermochromic spiropyrans with mesogenic substituents. We have defined some basic properties of the material, that can be of practical importance. During the past two months the studies on QLC's have been concentrated on further investigation of the structure of this new material. For structural studies the thin films of QLC's were aligned in the electrostatic field. We examined polarization absorption spectra of the films in the UV and visible regions and polarization ESR spectra. Recently the FTIR technique was used for IR observation of polarization of different groups in the spiropyran molecules aligned in the films. We used different coloured and fluorescent additives as probes in absorption and emission spectroscopy and a paramagnetic probe in ESR studies.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1987
- Accession Number
- ADA191280
Entities
People
- Valeri Krongauz
Organizations
- Weizmann Institute of Science