Tetraphenylporphyrins as coupling reagents and corrosion inhibitors


  • Dedicated to Professor Dr. H.-F. Grützmacher on the occasion of his 60th birthday


The irreversible protection of iron surfaces with metalloporphyrins through electrolysis is reported. Tetraphenyl porphyrins (see figure) are also shown to exhibit a corrosion-inhibiting effect when iron samples coated with the various porphyrin derivatives are treated with 5% sulfuric acid.

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