Theoretical and experimental investigations on the nonlinear optical properties of gold(III) dithiolene complexes

The synthesis by following green approaches of a new material based on benzodifuran and bithiophene units connected by azomethine junctions is described. X-ray structure analysis revealed a strong π–π stacking of the molecules in the solid state. The electronic properties were investigated by using UV–vis spectroscopy and cyclic voltammetry. This environmentally friendly material has been evaluated as a donor material in basic bilayer heterojunction solar cells by using C60 as the acceptor material to afford a power conversion efficiency superior to 1%.