A Novel Three-Way Chromophoric Molecular Switch: pH and Light Controllable Switching Cycles

Abstract

Programmed with an unusual number of functions, the tetraethynylethene derivative 1 exhibits three addressable switching subunits, which can undergo individual reversible switching cycles that are controllable by pH and light. Three "write/erase" processes and one "AND" logic gate process can be separately addressed, and in each case an efficient nondestructive readout is possible.