ORGN 356 |
| The development of reversible optical memory and light-driven chiral molecular switches is attracting much interest. A promising solution is to use photoswitchable chiral nematic liquid crystalline phase since its unique helical structures and physical properties can be tuned upon light irradiation. Such a phase can be achieved by doping both azo and chiral molecules into a nematic host. However, currently widely used chiral dopants are often used at a higher concentration due to their low helical twisting powers. The addition of a high concentration of chiral molecules and azo molecules often causes instability of the resulting liquid crystalline phase and alter beneficial physical properties. In this talk, we will present the synthesis of novel reversible photoswitchable chiral dopants with unusually high helical twisting power, which can facilitate small amount doping to induce mesophase chirality and magnify the photo-control effect. |
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Materials, Devices, and Switches
1:00 PM-4:40 PM, Monday, August 20, 2007 BCEC -- 258A, Oral
Division of Organic Chemistry |