Fluorescent dye doped ferroelectric liquid crystal: An anchoring energy, electro-optical and fluorescence study

Abstract

In this study anchoring energy parameters, electro-optical (E-O) study along with UV absorption and fluorescence study have been performed for pure ferroelectric liquid crystal (FLC) and three different concentrations i.e. 1%, 3% and 5% of fluorescent dye in pure FLC. The UV absorption has been shifted towards lower frequency side for fluorescent dye doped system in comparison to the pure FLC. Excitation wavelength, emission wavelength and quantum yield have been determined for all the mixtures from fluorescence study. Anchoring energy parameters, spontaneous polarization and response time have been determined by E-O study. The values of these parameters are strongly changed by the concentration of fluorescent dye.