Applications or implementation
À curcumin derivative for organic optoelectronics

In solution in organic solvents, molecule 2 shows an absorption spectrum with its lowest-energy band located in the visible range (figure 4a). It corresponds to the electronic transition between the HO and BV states. The intensity of this band is characterized by a molar absorption coefficient of the order of 100,000 M^–1.L.cm^–1, which is a very high value and testifies to the permissive nature of the transition. The return of the excited state to the ground state is accompanied by fluorescence emission. The position of the emission spectrum, like that of the absorption spectrum, is highly...