In situ organogelation at room temperature: direct synthesis of gelators in organic solvents.
Organogels are formed through a conventional organogelation involving a heating process and an in situ organogelation at room temperature. The conventional organogelation is carried out by dissolution of gelators by heating, while the in situ organogelation is performed by mixing of highly reactive methyl 2,6-diisocyanatohexanoate (LDI) or 2-isocyanatoethyl 2,6-diisocyanatohexanoate (LTI) and alkylamines. The in situ organogelation produced the organogels within several seconds after mixing. The organogels prepared by the in situ organogelation showed quite similar FT-IR spectra and SEM photographs to those formed by conventional organogelation. Moreover, the in situ organogelation using LTI and octylamine as well as dodecylamine produced organogels of acetone, ethyl acetate, and acetonitrile that gelators 5 and 6 cannot gel through conventional organogelation.
Suzuki
Masahiro
M
Graduate School of Science and Technology, Shinshu University, Ueda, Nagano 386-8567, Japan. msuzuki@giptc.shinshu-u.ac.jp
Nakajima
Yasushi
Y
Yumoto
Mariko
M
Kimura
Mutsumi
M
Shirai
Hirofusa
H
Hanabusa
Kenji
K