Nondestructive Data Processing Based on Chiroptical 1,2-Dithienylethene Photochromes This work was supported in part by the Natural Sciences and Engineering Research Council of Canada, and the University of Alberta. We are grateful to Dr. Robert McDonald for the X-ray crystallographic analysis, and to Dave Malisky, Dorothy Fox, and the University of Calgary for the use of their CD-ORD spectrophotometer.