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An iron–porphyrin adlayer adsorbed on the Au(111) substrate was used to study the electrocatalytic reduction of O₂ in HClO₄.

Fe(III) Octaethylporphine chloride is a synthetic porphyrin used to reduce oxygen and study heme.

2,3,7,8,12,13,17,18-Octaethyl-21H,23H-porphine metalates with iron chloride to form 2,3,7,8,12,13,17,18-Octaethyl-21H,23H-porphine iron chloride (FeOEP). It may be used to form Langmuir Blodgett (LB) thin films. Iron–porphyrin could be present naturally in biofilms.