Picosecond Time-Resolved Fluorescence Spectra of Liquid Crystal: Cyanooctyloxybiphenyl
Liquid crystals are highly anisotropic molecular systems which exhibit phase transitions in several stages on going from the crystal to the isotropic liquid phases. Mesophases such as smectic A and nematic phases are defined depending on orientational and spatial ordering of molecules. Effects of molecular anisotropy of the liquid crystal on chemical reactions and photo-physical processes now receive increasing attention [1–4]. It has been shown  that in a luminescent liquid crystal, dodecylcyanobiphenyl (12CB), two kinds of fluorescence are emitted in various phases. The dual fluorescence emission was interpreted in terms of singlet monomer and excimer formation.
KeywordsLiquid Crystal Nematic Phasis Excimer Formation Excimer Fluorescence Fast Decay Component
Unable to display preview. Download preview PDF.