Powerful low-molecular-weight gelators based on L-valine and L-isoleucine with various terminal groups
Powerful low-molecular-weight gelators based on L-valine and L-isoleucine with various terminal groups
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DOI：
10.1039/b604847a
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发表时间：
2006-08-01
影响因子：
3.3
通讯作者：
Hanabusa, Kenji
中科院分区：
文献类型：
--
作者：
Suzuki, Masahiro;Sato, Teruaki;Hanabusa, Kenji
合成了具有不同端基（如酯基、羧酸基和羧酸酯基）以及端基与L-氨基酸链段之间不同烷基链长的新型L-缬氨酸和L-异亮氨酸胶凝剂，并研究了它们在不同有机溶剂和油中的有机胶凝性能。有机凝胶的性质主要取决于L-氨基酸的分子结构、烷基链的长度和凝胶因子的疏水-疏水平衡。FT-IR研究表明，有机凝胶形成的驱动力是氢键和货车范德华力，纳米纤维的聚集方式依赖于溶剂。此外，发现这些胶凝剂可用于从油/水混合物中选择性胶凝油或燃料。
Novel L-valine and L-isoleucine gelators, which have various terminal groups, such as an ester, carboxylic acid and carboxylate as well as different alkyl chain lengths between the terminal group and L-amino acid segment, were synthesized and their organogelation properties were examined in various organic solvents and oils. The organogelation properties significantly depended on the molecular structures of the L-amino acid, the length of the alkyl chains and hydrophilic-hydrophobic balance of the gelators. The FT-IR studies demonstrated that the driving forces for the organogel formation were the hydrogen bonding and van der Waals interactions, and the aggregation modes of the nanofibers depended on the solvents. Furthermore, it was found that these gelators were useful for the selective gelation of oils or fuels from oil/water mixtures.