Patent ID: 7067640

Claim:
A cross-liked chiral compound made by reacting at least one functional group of at least one chiral unit with a compound of the formula 1: [RCH═CH—(X)—O] n —Ar—ZY, to create a polymerizable precursor: and polymerizing the precursor to create a cross-linked chiral compound where: chiral unit is a monomeric, oligomeric, cyclooligomeric or polymeric chiral unit and wherein the unit optionally comprises a primary or secondary amine function or a primary, secondary or tertiary hydroxyl function or a sulphhydryl function and in which all or a portion of these functions have optionally been modified to the ester, amide, urea, carbamate, thioester or thiocarbamate wherein the chiral unit optionally has 2 or more functional groups reactable with a compound of formula I or a compound linkable to a support; Ar is an arylene or polyarylene optionally substituted with at least one group selected from the group consisting of alkyl, alkoxy, hydroxyl, trihalogenoalkyl, silyl, thiol, amino, aminoalkyl, amide, nitro, nitrosamino, N-amino, aldehyde, acid and ester groups; X is a linear alkylene group carrying more than one carbon atom, a branched alkylene group, or an arylene group, optionally substituted with at least one group selected from the group consisting of alkyl, alkoxy, hydroxyl and trihalogenoalkyl groups; R is hydrogen, a linear or branched alkyl group, a linear or branched alkoxy group, a hydroxyl or an aryl group, optionally substituted; n is in the range 1 to 20; Y is a sulphur or oxygen atom or an amino group; and Z is a —CH 2 -group, a —CO-group, —NHCO-group or a —NH—CS-group.