Solubility and molecular state of C60 and C70 in solvents and solvent mixtures

Abstract

Abstract

Towards better understanding of C60organosols

“…[9][10][11][12][13][14][31][32][33][34][35] The state of fullerenes, either molecular or colloidal, in the so-called 'good' or 'strong' solvents, such as CS 2 , toluene, and benzene, is still a matter of discussion. 8,10,11,14,[36][37][38][39][40] Some authors believe that in such a case, aggregates appear only as a result of sonication. 11 The aggregates (if any) in 'good' solvents are unstable, destroyed by hand-shaking, 8 and their formation may be (partly) caused by interaction with oxygen.…”

The solubility of fullerene C60-fullerene C70 mixtures in styrene at 25°C

“…Studies of the solubility of fullerenes are of importance for the development of methods for chromatographic and prechromatographic (based on solubility and extraction equilibria) separation of industrial fullerene mixtures and for studies of chemical reactions with the participation of fullerenes [1][2][3][4][5][6][7]. There are ample experimental data on the solubility of pure light ( ë 60 and ë 70 ) fullerenes in various inorganic and diverse organic solvents (alkanes, aromatic solvents, alcohol, carboxylic acids, ionic liquids, etc.).…”

“…Conversely, the authors of [11] observed three solid phases and two eutonic points in the ë 60 -ë 70 -1,2 -dimethylbenzene system with the formation of two three-phase fields in the phase diagram. At 298 K, solid solution was based on ë 60 · 2( Ó -ë 6 ç 4 (ëç 3 Note that the importance of studying the solubility of fullerenes in styrene is largely determined by the possibility of the optimization of thermocatalytic styrene polymerization conditions for the production of polystyrene modified with fullerenes with unique service characteristics [12,13]. The isothermal solubility in the ë 60 -ë 70 -styrene system at 25°ë was studied by the isothermal saturation method.…”

The Antioxidative Effect of Fullerenes during the Peroxidation of Methyl Linoleate in Toluene

“…We chose toluene as the reacting solvent because of its relative high capacity to dissolve fullerenes. 9) MeL (final concentration 600 mM) containing an antioxidant (final concentration 0.60 mM for C 60 and C 70 , and 0.060 mM for -tocopherol) was dissolved in toluene. To this was added AMVN (final concentration 6.0 mM), and this was incubated at 37 C with mechanical shaking.…”