Журнал "Макрогетероциклы"

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

^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: tnl@isc-ras.ru

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.