Patent ID: 6740255
Filing Date: 2004-05-25
Classification: C09K,G11B

Abstract:
A photo-responsive liquid crystal composition comprising a liquid crystalline compound, and a gelling agent in an amount of 0.05 to 30% by mass, based on the composition, mixed with the liquid crystalline compound to form a gelling mixture, whereinthe gelling agent consists of a photochromic compound having a group capable of forming an intermolecular hydrogen bond in its molecule as well as a photo-responding site derived from at least one of an azobenzene structure, a spiropyran structure, a fulgide structure and a diarylethene structure, and wherein the composition is capable of existing in any state of gel of a first phase and gel of a second phase different from the first phase and is capable of undergoing changes in phase state between the gel of the first phase and the gel of the second phase at a specific temperature due to the photochromic property of the gelling agent.