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- Title
Size Dependence of [ n]Cycloparaphenylenes ( n=5-12) in Electrochemical Oxidation.
- Authors
Kayahara, Eiichi; Fukayama, Kei; Nishinaga, Tohru; Yamago, Shigeru
- Abstract
The oxidation processes of [ n]cycloparaphenylenes ([ n]CPPs) ( n=5-12) were systematically investigated by cyclic and rotating disk electrode voltammetry. All CPPs underwent pseudo-reversible two-electron oxidation irrespective of ring size, forming the corresponding radical cations and then dications. The results were in sharp contrast to those observed for linear oligoparaphenylenes, which only undergo one-electron oxidation. The difference in the first and second oxidation potentials in the CPP oxidation was affected by the ring size and became more significant as the decrease of CPP size. In other words, while the first oxidation from neutral CPP to the radical cation occurred faster as the size of CPP becomes smaller, the second oxidation from the radical cation to dication exhibited opposite size dependence.
- Subjects
PHENYLENE compounds; ELECTROCHEMICAL research; OXIDATION; VOLTAMMETRY; ELECTRON research
- Publication
Chemistry - An Asian Journal, 2016, Vol 11, Issue 12, p1793
- ISSN
1861-4728
- Publication type
Article
- DOI
10.1002/asia.201600582