Fluorescent Guests in Thermotropic and Chirality in Lyotropic Liquid Crystals.
Final rept. 1 Nov 80-31 Jan 84,
TEMPLE UNIV PHILADELPHIA PA DEPT OF CHEMISTRY
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Three problems were examined under this program. Firstly, a novel electro-optical display concept has been developed in our laboratory involving the incorporation of fluorescent emissive guest molecules into a cholesteric liquid crystal host. Improvements were made in the contrast ratios of such displays via electrochemical quenching. Secondly, a fundamental study was completed on the nature phase transitions in thermotropic liquid crystals confined in porous polymer films. Finally, new lyotropic fluid crystals were investigated to a try to develop non-aqueous lyotropic media, and b investigate orientational ordering and solubility of guest molecules in lyotropic nematics and cholesterics.
- *Liquid crystals
- *Phase studies
- Liquid crystal display systems
- Phase transformations
- Thermal properties
- Polymeric films
- Molecular structure
- Chelate compounds
- Organometallic compounds
- Atomic and Molecular Physics and Spectroscopy