Understanding and Controlling Short- and Long-Range Electron/Charge-Transfer Processes in Electron Donor-Acceptor Conjugates.

We probed a series of multicomponent electron donor-donor-acceptor conjugates both experimentally and computationally. The conjugates are based on the light harvester and primary electron-donor zinc-porphyrin (ZnP, donor) to whose β positions a secondary electron-donor ferrocene (Fc, donor) and the primary electron-acceptor C-fullerene (C, acceptor) are attached. Linking all of them via -phenylene-acetylene/acetylene bridges of different lengths to gain full control over shuttling electrons and holes between C, ZnP, and Fc is novel.

Functionalization of Carbon Spheres with a Porphyrin-Ferrocene Dyad.

Meso-tetraphenylporphyrin connected with a ferrocene molecule in the beta-position of the macrocycle through a triple carbon-carbon bond has been bound to carbon spheres using the Prato-Maggini reaction. The ethynyl or/and phenylene ethynylene subunits were chosen as a linking bridge to give a high conjugation degree between the donor (i. e.