Seo, Kyutae; Kang, Hyo published the artcile< Vertical Orientation of Liquid Crystal on Polystyrene Substituted with n-Alkylbenzoate-p-oxymethyl Pendant Group as a Liquid Crystal Precursor>, Formula: C9H9Cl, the main research area is polystyrene oxymethyl pendant liquid crystal polymer film physicochem property; anisotropic material; liquid crystal; n-alkyl-p-hydroxybenzoate; orientation layer; polystyrene.
We synthesized a series of polystyrene derivatives modified with precursors of liquid crystal (LC) mols. via polymer modification reactions. Thereafter, the orientation of the LC mols. on the polymer films, which possess part of the corresponding LC mol. structure, was investigated systematically. The precursors and the corresponding derivatives used in this study include ethyl-p-hydroxybenzoate (homopolymer P2BO and copolymer P2BO#, where # indicates the molar fraction of ethylbenzoate-p-oxymethyl in the side chain (# = 20, 40, 60, and 80)), n-butyl-p-hydroxybenzoate (P4BO), n-hexyl-p-hydroxybenzoate (P6BO), and n-octyl-p-hydroxybenzoate (P8BO). A stable and uniform vertical orientation of LC mols. was observed in LC cells fabricated with P2BO#, with 40 mol% or more ethylbenzoate-p-oxymethyl side groups. In addition, the LC mols. were oriented vertically in LC cells fabricated with homopolymers of P2BO, P4BO, P6BO, and P8BO. The water contact angle on the polymer films can be associated with the vertical orientation of the LC mols. in the LC cells fabricated with the polymer films. For example, vertical LC orientation was observed when the water contact angle of the polymer films was greater than ∼86°. Good orientation stability was observed at 150°C and with 20 J/cm2 of UV irradiation for LC cells fabricated with the P2BO film.
Polymers (Basel, Switzerland) published new progress about Contact angle. 1592-20-7 belongs to class chlorides-buliding-blocks, and the molecular formula is C9H9Cl, Formula: C9H9Cl.
Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics