Calorimetric studies of solvates of C{sub 60} and C{sub 70} with aromatic solvents
- Moscow State Univ. (Russian Federation). Dept. of Chemistry
- Lund Univ. (Sweden)
- Drexel Univ., Philadelphia, PA (United States). Chemistry Dept.
- Washington Univ., St. Louis, MO (United States). Physics Dept.
To improve the understanding of the solution properties of C{sub 60} and C{sub 70} in aromatic solvents, binary systems of C{sub 60} and C{sub 70} with benzene, toluene, 1,2- and 1,3-dimethylbenzene, 1,2,4,- and 1,3,5-trimethylbenzene, bromobenzene, and 1,2- and 1,3-dichlorobenzene were studied using differential scanning calorimetry, solution calorimetry, and thermogravimetry. Solid solvates with different compositions were identified in many of the systems. The solvates were characterized by composition and by the temperature and the enthalpy of the incongruent melting transition. Enthalpies of solution of C{sub 60} in toluene, 1,2-dimethylbenzene, 1,2- and 1,3-dichlorobenzene, and 1,2,4-trimethylbenzene and of C{sub 70} in 1,2-dimethylbenzene and in 1,2- and 1,3-dichlorobenzene were determined. The formation-incongruent melting of solid solvates causes maxima in the temperature-solubility curves of fullerenes in aromatic solvents. Trends in solubility behavior of fullerenes were discussed in terms of thermodynamics of solution and solvate formation.
- OSTI ID:
- 347555
- Journal Information:
- Journal of Physical Chemistry B: Materials, Surfaces, Interfaces, amp Biophysical, Journal Name: Journal of Physical Chemistry B: Materials, Surfaces, Interfaces, amp Biophysical Journal Issue: 8 Vol. 103; ISSN 1089-5647; ISSN JPCBFK
- Country of Publication:
- United States
- Language:
- English
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