Molecular Crystals and Liquid Crystals, Vol.613, No.1, 82-87, 2015
Size Control of Cholesteric Liquid Crystalline Microcapsules
We have succeeded the size-controlled fabrication of water-in-oil-in-water (W/O/W) double emulsion droplets with a cholesteric liquid crystalline (CLC) material, which is a mixture of a nematic liquid crystalline compound, 4-cyano-4 '-pentylbiphenyl (5CB), and a chiral dopant, 1,4:3,6-dianhydro-2,5-bis[4-(n-hexyl-1-oxy)benzoic acid]sorbitol [ISO(6OBA)(2)], as the shell phase and an aqueous poly(vinylalcohol) (PVA) solution as the core and outer phases (CLC microcapsules). Here we report the size-controlled fabrication of the CLC microcapsules and the size-dependence of their transmission spectra.
Keywords:water-in-oil-in-water double emulsion;1,4:3,6-dianhydro-2,5-bis[4-(n-hexyl-1-oxy)benzoic acid]sorbitol;4-cyano-4 '-pentylbiphenyl;microfluidic devices;cholesteric liquid crystals