St phane Rigaut, Corinne Lagrost, Karine Costuas and colleagues from CNRS-University of Rennes have prepared a photo/electrochromic multifunctional switching system, based on Irie's dithienylethene photochromic unit ([Cl(dppe)2Ru]+ where dppe = 1,2-bis(diphenylphosphino)ethane). The switch is reversible, and a change of structure (corresponding to different physical properties) can be triggered both by light and by altering electric potential.
The organometallic ruthenium unit promotes a strong electronic coupling between the metal centers and the conjugated organic ligands. This leads to a molecular switch with multicolor electrochromism, electrocyclization at a remarkably low voltage, and photo/electro control of electronic communication within a molecular wire.
The organometallic ruthenium unit promotes a strong electronic coupling between the metal centers and the conjugated organic ligands. This leads to a molecular switch with multicolor electrochromism, electrocyclization at a remarkably low voltage, and photo/electro control of electronic communication within a molecular wire.
