Synthesis of New Cobalt(III) -Porphyrin Complex, Photochemical, X-ray Diffraction, and Electrical Properties for Photovoltaic Cells.

The present work describes the preparation and characterization of a new cobalt(III) porphyrin coordination compound named (chlorido)(nicotinoylchloride)[-tetra(-chlorophenyl)porphyrinato]cobalt(III) dichloromethane monosolvate with the formula [Co(TClPP)Cl(NTC)]·CHCl (). The single-crystal X-ray molecular structure of shows very important ruffling and waving distortions of the porphyrin macrocycle. The Soret and Q absorption bands of are very red-shifted as a consequence of the very distorted porphyrin core. This coordination compound was also studied by fluorescence and cyclic voltammetry. The efficiency of our four porphyrinic compounds-the HTClPP () free-base porphyrin, the [Co(TClPP)] () and [Co(TClPP)Cl] () starting materials, and the new Co(III) metalloporphyrin [Co(TClPP)Cl(NTC)]·CHCl ()-as catalysts in the photochemical degradation was tested on malachite green (MG) dye. The current voltage of complexes and was also studied. Electrical parameters, including the saturation current density (J) and barrier height (ϕ), were measured.