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ISSN 1998-9539

Thermodynamics of Supramolecule Formation between Metal Porphyrin and Pyridine Substituted N-Methylpyrrolidinyl-[60]fullerene

Tatyana N. Lomova,a@ Michael E. Malov,b Michael V. Klyuev,b and Pavel A. Troshinc


aInstitute of the Solution Chemistry of Russian Academy of Sciences, Ivanovo, 153045, Russia

bIvanovo State University, Ivanovo, 153025, Russia

cInstitute of Problems of Chemical Physics of Russian Academy of Sciences, Chernogolovka, 142432, Russia


@Corresponding author E-mail:


Thermodynamic characteristics, mechanism, and spectral manifestations of consecutive reactions between (5,10,15,20-tetraphenylporphyrinato)(chloro)indium(III) ((Cl)InTPP) and organic base 2’-(4-pyridyl)-1’-methylpyrrolidinyl-[
60]fullerene (PyF) in chloroform were studied using spectrophotometric titration and physicochemical analysis of intermediate forms. The consecutive coordination of two PyF molecules (K1 = 6.9 . 104, K2 = 9.3 . 103 l/mol at 298 K) with the formation of (Cl)(PyF)InTPP and (Cl)(PyF)2 InTPP, and addition of three other PyF molecules on complex periphery producing (Cl)(PyF)2 InTPP . 3(PyF) (K3 = 2.3 l3/mol3) were observed at the first, second, and third steps. The third reaction stage most likely corresponds to π – π complex formation equilibrium between the aromatic complex and PyF with a 1:3 stoichiometry. Perspectives for use of PyF - metalloporphyrin complex as a photovoltaic material are considered.

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