Hole injection and formation of polarons in cycloalkane liquids.
In several cycloalkanes, ionization of the solvent or photoexcitation of a solute radical cation results in the formation of rapidly hopping solvent holes. Here we report the temperature dependence of scavenging rate constants and conductivity signals (220 to 350 K) for the solvent holes in liquid cyclohexane, methylcyclohexane, and Decalins. Our results indicate that the hopping in Decalins and methylcyclohexane is thermally activated; the activation energies are of the same order as the energy of solvent reorganization. In cyclohexane, the hopping does not seem to be thermally activated. We discuss the hypothesis that the mobile solvent holes in cycloalkanes are small polarons migrating by phonon-assisted hopping.
- Research Organization:
- Argonne National Laboratory (ANL)
- Sponsoring Organization:
- ER
- DOE Contract Number:
- AC02-06CH11357
- OSTI ID:
- 938162
- Report Number(s):
- ANL/CHM/JA-27746
- Journal Information:
- J. Phys. Chem. B, Journal Name: J. Phys. Chem. B Journal Issue: 18 ; 1998 Vol. 102; ISSN 1089-5647; ISSN JPCBFK
- Country of Publication:
- United States
- Language:
- ENGLISH
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