Low-molecular-weight gelators based on N(alpha)-acetyl-N(epsilon)-dodecyl-L-lysine and their amphiphilic gelation properties.
A simple amphiphilic low-molecular-weight gelator based on L-lysine, N(alpha)-acetyl-N(epsilon)-lauroyl-L-lysine (1), its alkali metal salts [Na (2) and K (3)], and two-component gelators [1 and 2 and 1 and 3] were synthesized. Compound 1 had a good hydrogelation ability that formed a pure water gel at 2 g L(-1) (0.2 wt.%) and a saline gel at 4 g L(-1) (0.4 wt.%). Two-component compounds were able to form hydrogels in aqueous solutions containing alkali metal and alkali earth metal ions in addition to pure water and saline. Although 1 formed organogels in a few organic solvents, two-component compounds also functioned as a good organogelator. The FT-IR study indicated that the driving forces for the formation of supramolecular gels were hydrogen-bonding and hydrophobic interactions. Furthermore, the thermal properties of the hydrogels are discussed.
Graduate School of Science and Technology, Shinshu University, Ueda, Nagano 386-8567, Japan. msuzuki@shinshu-u.ac.jp
Masahiro
M
Suzuki
Tomoko
T
Abe
Kenji
K
Hanabusa
D019342:Acetic Acid / Q000737:chemistry*; D005782:Gels / Q000737:chemistry; D008239:Lysine / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D015394:Molecular Structure; D008970:Molecular Weight
D005782:Gels; D008239:Lysine; D019342:Acetic Acid