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Electropolymerization of Methylene Blue Investigated Using On‐Line Electrochemistry/Electrospray Mass Spectrometry
Author(s) -
Kertesz Vilmos,
Van Berkel Gary J.
Publication year - 2001
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/1521-4109(200111)13:17<1425::aid-elan1425>3.0.co;2-r
Subject(s) - monomer , methylene blue , mass spectrometry , chemistry , electrospray , electrochemistry , methylene , polymerization , analytical chemistry (journal) , ring (chemistry) , photochemistry , organic chemistry , chromatography , electrode , polymer , catalysis , photocatalysis
The initial products of the electrochemical polymerization of methylene blue were studied using a thin‐layer flow cell coupled on‐line with electrospray mass spectrometry. A potentiostatic technique was applied to initiate the polymerization while the soluble n ‐mers generated were monitored by mass spectrometry. Methylene blue dimers and trimers were observed at m / z values consistent with either “nitrogen‐to‐ring” coupling of the monomers or with “ring‐to‐ring” coupling of demethylated monomers during the electropolymerization. Experiments accomplished in D 2 O‐based solutions prove that “nitrogen‐to‐ring” coupling is the dominant process.