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Molecular complexes between octaethyltetrathiaporphyrin dication and electron donors: A spectroscopic and electrochemical study
Author(s) -
Mahammed Atif,
Rabinovitz Mordecai,
Willner Itamar,
Vogel Emanuel,
Pohl Michael
Publication year - 1995
Publication title -
journal of physical organic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.325
H-Index - 66
eISSN - 1099-1395
pISSN - 0894-3230
DOI - 10.1002/poc.610081004
Subject(s) - dication , chemistry , electrochemistry , electron transfer , intermolecular force , nafion , membrane , solvent , ionic bonding , electrode , inorganic chemistry , photochemistry , molecule , ion , organic chemistry , biochemistry
Octaethyltetrathiaporphyrin dication, OTP 2+ , is electrochemically reduced by two successive electron‐transfer processes to OPT 0 . OPT 2+ forms intermolecular complexes with a series of π‐donors. The association constants of the resulting complexes are controlled by the oxidation potentials of the π‐donors and solvent properties. OTP 2+ was incorporated into a Nafion membrane cast on a Pt electrode. Formation of OTP 2+ –π‐donor complexes in the polymer membrane was followed by electrochemical and spectroscopic means. The association constants of the OTP 2+ –π‐donor complexes in the Nafion membrane exhibit lower values than a homogeneous phase owing to the high ionic strength in the polyelectrolyte.