COLOR-CHANGE INDUCED BY SONICATION IN AQUEOUS DISPERSION OF AMPHIPHILE ASSEMBLY

By sonication at room temperature, the color of the aqueous dispersion of [GRAPHICS] assemblies may be changed from green-yellow to orange-r ed, and the reverse change of color may be achieved by heating, The cy cling color change induced by sonication and heating may be repeated m any times, The variation of orientation of molecules in assemblies was thought to be responsible for the phenomenon. (C) 1996 Academic Press , Inc.