title: Aggregation Behavior of Fluorooctanols in Hydrocarbon Solvents.
abstract: The association behaviors of three 1-octanols (1-octanol:  C8OH; 1,1,2,2-tetrahydrotridecafluorooctanol:  TFC8OH; and 1,1-dihydropentadecafluorooctanol:  DFC8OH) in two hydrocarbon solvents (n-hexane and benzene) were examined by vibration spectroscopy from 288.15 to 318.15 K. From the analysis of results with a mass action model, it was found that dimers and tetramers of 1-octanols coexisted with monomers in the n-hexane solution. These aggregates were formed by hydrogen bonding between the OH groups of 1-octanols. In the n-hexane solutions, an increase in the fluorination number of the 1-octanol molecule enhanced the intermolecular hydrogen bonding between the OH groups, but reduced the amounts of polymeric species. Conversely, in the benzene solution, the NIR experiment suggested that the OH groups of 1-octanols did not interact with other OH groups, but with the benzene molecules instead. It was found from (19)F NMR chemical shift measurements that the fluorooctanols in the benzene solution aggregated by interaction between the fluorocarbon chains instead of by hydrogen bonding.
authors: Department of Chemistry and Chemical Engineering, Faculty of Engineering, Kanazawa University, Ishikawa 920-8667, Japan, and Department of Chemistry, Faculty of Science, Kyushu University, Fukuoka 812-8581, Japan.
authors: Akio
authors: A
authors: Ohta
authors: Department of Chemistry and Chemical Engineering, Faculty of Engineering, Kanazawa University, Ishikawa 920-8667, Japan, and Department of Chemistry, Faculty of Science, Kyushu University, Fukuoka 812-8581, Japan.
authors: Ryo
authors: R
authors: Murakami
authors: Department of Chemistry and Chemical Engineering, Faculty of Engineering, Kanazawa University, Ishikawa 920-8667, Japan, and Department of Chemistry, Faculty of Science, Kyushu University, Fukuoka 812-8581, Japan.
authors: Akiko
authors: A
authors: Urata
authors: Department of Chemistry and Chemical Engineering, Faculty of Engineering, Kanazawa University, Ishikawa 920-8667, Japan, and Department of Chemistry, Faculty of Science, Kyushu University, Fukuoka 812-8581, Japan.
authors: Tsuyoshi
authors: T
authors: Asakawa
authors: Department of Chemistry and Chemical Engineering, Faculty of Engineering, Kanazawa University, Ishikawa 920-8667, Japan, and Department of Chemistry, Faculty of Science, Kyushu University, Fukuoka 812-8581, Japan.
authors: Shigeyoshi
authors: S
authors: Miyagishi
authors: Department of Chemistry and Chemical Engineering, Faculty of Engineering, Kanazawa University, Ishikawa 920-8667, Japan, and Department of Chemistry, Faculty of Science, Kyushu University, Fukuoka 812-8581, Japan.
authors: Makoto
authors: M
authors: Aratono