自然科学版
陕西师范大学学报(自然科学版)
化学与材料科学
谷氨酰胺衍生物胶凝剂的简单合成及凝胶性能
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李远刚,李华静,马小单,周安宁,宓金可
(西安科技大学 化学与化工学院, 陕西 西安 710054)
李远刚,男,讲师,博士,主要从事超分子化学方面的研究.E-mail:chemliyg@gmail.com.
摘要:
通过一步简单反应合成了谷氨酰胺衍生物胶凝剂: 1-十二烷基氨基-2-Boc-氨基-L-谷氨酰胺(DBLN), 1-十四烷基氨基-2-Boc-氨基-L-谷氨酰胺(TBLN)和1-十六烷基-2-Boc-氨基-L-谷氨酰胺(HBLN). 考察了这些化合物在常见溶剂中的胶凝行为, 发现DBLN和HBLN能够胶凝所实验20种溶剂中的7种, 而TBLN只能在其中的4种溶剂中形成稳定凝胶. 通过扫描电镜研究了所得凝胶的表面形貌, 发现除了胶凝剂结构, 不同溶剂对凝胶形貌也有明显影响. 红外光谱分析证明酰胺基团之间的氢键作用是形成凝胶的重要推动力.
关键词:
小分子凝胶; 谷氨酰胺; 简单合成; 氢键作用; 超分子组装
收稿日期:
2011-03-10
中图分类号:
O648
文献标识码:
A
文章编号:
1672-4291(2011)04-0045-06
基金项目:
国家自然科学基金资助项目(20943001); 陕西省教育厅科研计划项目(09JK576).
Doi:
Simple synthesis and gelation properties of glutamine-based gelators
LI Yuan-gang, LI Hua-jing, MA Xiao-dan, ZHOU An-ning, MI Jin-ke
(College of Chemistry and Chemical Engineering, Xi′an University of Science and Technology, Xi′an 710054, Shaanxi, China)
Abstract:
Glutamine-based gelators, 1-dodecylamino-2-Boc-amino-L-glutamine (DBLN), 1-tetradecyl- amino-2-Boc-amino-L-glutamine (TBLN) and 1-hexadecyl-amino-2-Boc-amino-L-glutamine (HBLN), were simply synthesized through one-step reaction. It was found that DBLN and HBLN could gelate seven among the tested twenty solvents, but TBLN only formed stable gel in four solvents. SEM observation showed that both the structure of the gelators and the property of the solvents affected the morphology of the aerogel, obviously. FTIR spectra revealed that the hydrogen bonding between the amide groups played an important role in gel formation.
KeyWords:
low molecular mass gelators; glutamine; simple synthesis; hydrogen bonding; supramolecular assembly