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

Soumaya NasriMouhieddinne GuerguebJihed BrahmiYoussef O Al-GhamdiFlorian MoltonFrédérique LoiseauIlona Turowska-TyrkHabib Nasri
Published in: Molecules (Basel, Switzerland) (2022)
The present work describes the preparation and characterization of a new cobalt(III) porphyrin coordination compound named (chlorido)(nicotinoylchloride)[ meso -tetra( para -chlorophenyl)porphyrinato]cobalt(III) dichloromethane monosolvate with the formula [Co III (TClPP)Cl(NTC)]·CH 2 Cl 2 ( 4 ). The single-crystal X-ray molecular structure of 4 shows very important ruffling and waving distortions of the porphyrin macrocycle. The Soret and Q absorption bands of 4 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 H 2 TClPP ( 1 ) free-base porphyrin, the [Co II (TClPP)] ( 2 ) and [Co III (TClPP)Cl] ( 3 ) starting materials, and the new Co(III) metalloporphyrin [Co III (TClPP)Cl(NTC)]·CH 2 Cl 2 ( 4 )-as catalysts in the photochemical degradation was tested on malachite green (MG) dye. The current voltage of complexes 3 and 4 was also studied. Electrical parameters, including the saturation current density (J s ) and barrier height (ϕ b ), were measured.
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