Photochemically active chiral compounds and compositions containing the same

The present invention relates to a phototunable chiral dopant represented by the following structure: wherein: A, B, C and D are independent divalent groups; X and Z are any independently selected substituent; n is an integer and independently varies from 0 to 3; q is an integer and independently varies from 0 to 5; RNG1 and RNG2 independently represent any ring group; m represents an integer independently varying from 0 to 4; p represents an integer independently varying from 1 to 4; Q independently represents a carbon C-RC, or nitrogen, wherein RC is independently hydrogen or any substituent. The invention also relates to the use of the dopant in a liquid crystalline composition and a display containing the same, as well as a material composition comprising an enantiomeric excess of one enantiomer of the compound.