We now report preliminary results on a star-shaped tris[4-(2-thienyl)phenyl]amine core modified by peripheral electron-withdrawing dicyanovinyl groups (1) and its use as donor material for the realization of hetero-junction solar cells. We show that the creation of an intramolecular charge-transfer (ICT) leads simultaneously to an extension of the spectral response and to an increase of the open-circuit voltage of the resulting solar cells.
![2-[[5-[4-[4-[5-(2,2-dicyanoethenyl)thiophen-2-yl]-N-[4-[5-(2,2-dicyanoethenyl)thiophen-2-yl]phenyl]anilino]phenyl]thiophen-2-yl]methylidene]propanedinitrile Structure](https://image.chemsrc.com/caspic/159/883236-54-2.png)