One A₃B Porphyrin Structure-Three Successful Applications

Area of Science:

• Materials Science
• Electrochemistry
• Analytical Chemistry

Background:

• Porphyrins are versatile molecules with diverse applications.
• Mixed substituted A3B porphyrins and their metal complexes offer unique properties.
• Characterization of these compounds is crucial for understanding their functionalities.

Purpose of the Study:

• To synthesize and characterize a novel Pt(II) complex of a mixed substituted A3B porphyrin.
• To evaluate its efficacy as a sensor for hydroquinone detection.
• To assess its performance as a corrosion inhibitor for carbon steel and its electrocatalytic activity.

Main Methods:

• Synthesis and full characterization using NMR, UV-Vis, FT-IR, fluorescence, and microscopy (AFM, TEM, SEM-EDX).
• Application as optical and fluorescence sensors for hydroquinone.
• Testing as corrosion inhibitors in acidic media.
• Electrocatalytic evaluation for hydrogen and oxygen evolution reactions (HER and OER).

Main Results:

• The Pt(II) porphyrin complex exhibited sensitive and selective hydroquinone detection (0.039-6.71 µM, LOD 0.013 µM).
• It provided 88% corrosion inhibition for carbon steel in acid medium.
• Electrocatalytic studies showed promising HER activity with an overpotential of 108 mV at -10 mA/cm² in acidic media.

Conclusions:

• The synthesized Pt(II) porphyrin complex is a multifunctional material.
• It shows potential for sensitive hydroquinone sensing and effective corrosion inhibition.
• The complex demonstrates significant electrocatalytic activity for HER, particularly in acidic environments.