title: L-lysine based gemini organogelators: their organogelation properties and thermally stable organogels.
abstract: Novel gemini organogelators based on L-lysine, in which two L-lysine derivatives are linked by different alkylene chain lengths through the amide bond, have been simply and effectively synthesized, and their organogelation abilities and thermal stabilities have been investigated. In a series of L-lysine ethyl ester derivatives, the organogelation abilities decreased with increasing alkylene spacer length. In particular, bis(N(epsilon)-lauroyl-L-lysine ethyl ester) oxalyl amide is a good organogelator that gels most organic solvents such as alcohols, cyclic ethers, aromatic solvents and acetonitrile. Various oxalyl amide derivatives with different alkyl ester groups such as hexyl, decyl, dodecyl, 2-ethyl-1-hexyl and 3,5,5-trimethylhexyl also showed good organogelation abilities. Furthermore, it was found that the cyclohexane gels formed by some oxalyl amide derivatives have a high thermal stability.
authors.affiliation: Graduate School of Science and Technology, Shinshu University, Ueda, Nagano 386-8567, Japan. msuzuki@giptc.shinshu-u.ac.jp
authors.forename: Masahiro
authors.initials: M
authors.lastname: Suzuki
authors.forename: Tomomi
authors.initials: T
authors.lastname: Nigawara
authors.forename: Mariko
authors.initials: M
authors.lastname: Yumoto
authors.forename: Mutsumi
authors.initials: M
authors.lastname: Kimura
authors.forename: Hirofusa
authors.initials: H
authors.lastname: Shirai
authors.forename: Kenji
authors.initials: K
authors.lastname: Hanabusa
mesh_terms: D002625:Chemistry, Organic / Q000379:methods*; D003510:Cyclohexanes / Q000737:chemistry; D006860:Hydrogen Bonding; D008239:Lysine / Q000138:chemical synthesis / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D008854:Microscopy, Electron; D008956:Models, Chemical; D017550:Spectroscopy, Fourier Transform Infrared; D013696:Temperature
chemical_list: D003510:Cyclohexanes; D008239:Lysine