High-mobility ions in the viscous hydrocarbon squalane
- Argonne National Lab., IL (United States)
Pulsed radiolysis, laser flash photolysis, and dc photoconductivity were used to measure the rates of ion-molecule reactions in the viscous hydrocarbon squalane (2,6,10,15,19,23-hexamethyltetracosane). It was found that squalane radical cation (hole) is scavenged with a rate constant nearly equal to (5-7) x 10{sup 9} mol{sup -1} dm{sup 3} s{sup -1}, which is 4-10 times faster than other charge transfer reactions in squalane. In this sense, squalane is similar to cyclohexane, methylcyclohexane, and decalins, yielding high-mobility ions (HMIs) on radiolysis. While in squalene the hole is more mobile than molecular ions, its mobility (estimated as 2 x 10{sup -4} cm{sup 2}/(V s)) is much lower than that of the HMIs in cycloalkanes. The lifetime of the squalane hole in the absence of scavengers is 20{+-}5 ns. 33 refs., 10 figs., 4 tabs.
- OSTI ID:
- 232571
- Journal Information:
- Journal of Physical Chemistry, Journal Name: Journal of Physical Chemistry Journal Issue: 14 Vol. 100; ISSN JPCHAX; ISSN 0022-3654
- Country of Publication:
- United States
- Language:
- English
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