NANOSYSTEMS: PHYSICS, CHEMISTRY, MATHEMATICS, 2014, 5 (5), P. 709–717
CONCENTRATION DEPENDENCE OF ELECTRIC CONDUCTIVITY AND pH FOR AQUEOUS SOLUTIONS OF WATERSOLUBLE LIGHT FULLERENE — C60 [= C(COOH)2]3 TRISMALONATE
K. N. Semenov – St. Petersburg State University, Saint Petersburg, Russia
N. A. Charykov – St. Petersburg State Technological Institute (Technical University); St. Petersburg State Electro-Technical University (LETI), Saint Petersburg, Russia
A. S. Kritchenkov – St. Petersburg State University, Saint Petersburg, Russia
I. A. Cherepkova – St. Petersburg State Technological Institute (Technical University), Saint Petersburg, Russia
O. S. Manyakina – St. Petersburg State Technological Institute (Technical University), Saint Petersburg, Russia
D. P. Tyurin – St. Petersburg State Technological Institute (Technical University), Saint Petersburg, Russia
A. A. Shestopalova – St. Petersburg State Technological Institute (Technical University), Saint Petersburg, Russia
V. A. Keskinov – St. Petersburg State Technological Institute (Technical University), Saint Petersburg, Russia; keskinov@mail.ru
E. A. Kulenova – D. Serikbayev East-Kazakhstan state technical university, Ust-Kamenogorsk, Kazakhstan
K.V. Ivanova – St. Petersburg State Technological Institute (Technical University), Saint Petersburg, Russia
N. M. Ivanova – St. Petersburg State University, Saint Petersburg, Russia
D. G. Letenko – St. Petersburg State University Architecture Academy, Saint Petersburg, Russia
V. A. Nikitin – St. Petersburg State Technical University, Saint Petersburg, Russia
E. L. Fokina – St. Petersburg State University, Saint Petersburg, Russia
Studies of the concentration dependence of electric conductivity and pH for aqueous solutions of the light fullerene –C60 [= C(COOH)2]3 trismalonate were performed at 25 °C. From both data (from the equivalent electric conductivity and pH), the apparent degree of dissociation and concentration dissociation constants of C60 [= C(COOH)2]3 in aqueous solutions were calculated. Thermodynamic dissociation constants of C60 [= C(COOH)2]3 in aqueous solutions, calculated for infinitely dilute solutions by the both methods, were reasonably similar.
Keywords: trismalonate of light fullerene, electric conductivity.
PACS 61.48.+c
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