Oxidative polymerization of zinc porphyrin using the electrochemical Langmuir–Blodgett trough
RSC Advances, 2026 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Publication Date: 2026
- Doi Number: 10.1039/d6ra05196k
- Journal Name: RSC Advances
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Chemical Abstracts Core, Compendex, Directory of Open Access Journals
- Middle East Technical University Affiliated: No
Abstract
Multielectron electrochemical oxidation of non-substituted zinc porphyrin yields a polymeric structure. We report the oxidative formation of polymerization nuclei using the electrochemical Langmuir–Blodgett (LB) trough and an STM-type electrode tip. The electrochemical method eliminates the need for an excess of a chemical oxidant. The electrochemical LB trough assembly, which we reported earlier, efficiently produces a large number of separated thin oxidized nuclei. Topographic profiles from STM images indicate their average height of 0.52 ± 0.04 nm. The most frequently observed islands have an average length of 11.6 ± 0.6 nm. Their growth follows the Volmer–Weber “island growth” model, yielding isolated islands of a new phase. These experiments confirm electrochemical oxidation as an alternative method for synthesizing thin porphene oligomers without an external oxidizing agent.