Acrylate compound having photoreactive group, photoreactive acrylate polymer and photo-alignment layer comprising the same

摘要

Disclosed herein are an acrylate compound having a photoreactive group, a photoreactive acrylate polymer, and a photo-alignment layer including the same that not only have excellent alignment properties and alignment rate and readiness for change in the alignment direction based on the polarization direction of radiation, but also exhibit a high solubility to organic solvents and good workability.

主权项

1. A photoreactive acrylate polymer comprising a repeating unit of the following formula 3: wherein m is 50 to 5,000; R1 is hydrogen or substituted or unsubstituted alkyl having 1 to 3 carbon atoms; R2 is a chemical bond or a substituted or unsubstituted linear or branched alkylene radical having 1 to 20 carbon atoms; and R3 is at least one radical bonded to R2 and represented by the following formula 1a: wherein A is chemical bond, oxygen, sulfur, or —NH—; B is selected from the group consisting of chemical bond, substituted or unsubstituted alkylene having 1 to 20 carbon atoms, carbonyl, —C(═O)O—, —O—C(═O)—, substituted or unsubstituted arylene having 6 to 40 carbon atoms, and substituted or unsubstituted heteroarylene having 6 to 40 carbon atoms; R9 is selected from the group consisting of chemical bond, substituted or unsubstituted alkylene having 1 to 20 carbon atoms, substituted or unsubstituted alkenylene having 2 to 20 carbon atoms, substituted or unsubstituted cycloalkylene having 3 to 12 carbon atoms, substituted or unsubstituted arylene having 6 to 40 carbon atoms, substituted or unsubstituted aralkylene having 7 to 15 carbon atoms, and substituted or unsubstituted alkynylene having 2 to 20 carbon atoms; and at least one of R10 to R14 is a radical represented by -L-R15-R16-(substituted or unsubstituted aryl having 6 to 40 carbon atoms), wherein among the R10 to R14, the remainders other than the radical of -L-R15-R16-(substituted or unsubstituted aryl having 6 to 40 carbon atoms) are the same as or different from one another and independently selected from the group consisting of hydrogen, halogen, substituted or unsubstituted alkyl having 1 to 20 carbon atoms, substituted or unsubstituted alkoxy having 1 to 20 carbon atoms, substituted or unsubstituted aryloxy having 6 to 30 carbon atoms, substituted or unsubstituted aryl having 6 to 40 carbon atoms, and heteroaryl having 6 to 40 carbon atoms with hetero elements in Group 14, 15 or 16; L is selected from the group consisting of oxygen, sulfur, —NH—, substituted or unsubstituted alkylene having 1 to 20 carbon atoms, carbonyl, —C(═O)O—, —O—C(═O)—, —CONH—, and substituted or unsubstituted arylene having 6 to 40 carbon atoms; R15 is substituted or unsubstituted alkylene having 1 to 10 carbon atoms; and R16 is selected from the group consisting of chemical bond, —O—, —C(═O)O—, —OC(═O)—, —NH—, —S—, and —C(═O)—.