Effects of pH and Oxidants on the First Steps of Polydopamine Formation: A Thermodynamic Approach

• Published in: The journal of physical chemistry. B Vol. 122; no. 24; pp. 6314 - 6327
• Main Authors: Salomäki, Mikko, Marttila, Lauri, Kivelä, Henri, Ouvinen, Tuomo, Lukkari, Jukka
• Format: Journal Article
• Language: English
• Published: United States American Chemical Society 21.06.2018
• Subjects: anaerobic conditions; autoxidation; chlorides; copper; dopamine; electrochemistry; ions; iron; oxidants; oxygen; physical chemistry; quinones; thermodynamics; ultraviolet-visible spectroscopy

We present a general thermodynamic top-down analysis of the effects of oxidants and pH on dopamine oxidation and cyclization, supplemented with UV–vis and electrochemical studies. The model is applicable to other catecholamines and various experimental conditions. The results show that the decisive...