Aggregation Behavior of Fluorooctanols in Hydrocarbon Solvents
Akio Ohta
Ryo Murakami
Akiko Urata
Tsuyoshi Asakawa
Shigeyoshi Miyagishi
Makoto Aratono
10.1021/jp035134o.s012
https://acs.figshare.com/articles/journal_contribution/Aggregation_Behavior_of_Fluorooctanols_in_Hydrocarbon_Solvents/3361492
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 (<i>n</i>-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 <i>n</i>-hexane solution. These aggregates were formed by hydrogen bonding between the OH groups of
1-octanols. In the <i>n</i>-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 <sup>19</sup>F NMR chemical
shift measurements that the fluorooctanols in the benzene solution aggregated by interaction between the
fluorocarbon chains instead of by hydrogen bonding.
2003-10-16 00:00:00
mass action model
19 F NMR chemical shift measurements
hexane
8OH
DFC
octanol
OH groups
TFC
NIR
benzene solution aggregated