基于芳香羧酸配体的有机凝胶、金属凝胶的制备及流变性能  

Preparation and Rheological Properties of Organogels and Metallogels Based on Aromatic Carboxylic Ligands

作　　者：薛敏[1] 芦卓妍 俞露露 丁瑶 陈茎 XUE Min;LU Zhuoyan;YU Lulu;DING Yao;CHEN Jing(School of Chemical Engineering,Xi’an University,Xi’an 710065,China)

机构地区：[1]西安文理学院化学工程学院,西安710065

出　　处：《材料导报》2025年第3期263-268,共6页Materials Reports

基　　金：国家自然科学基金(22172118);陕西省自然科学基金(2023-JC-QN-0106);西安文理学院校级科研团队(XAWLKYTD202308);大学生创新创业训练计划项目(DC2023050)。

摘　　要：合成了四个包含胆固醇基团的芳香羧酸化合物CDCn(n=4,6,8,10),分别测试了CDCn、CDCn与Tb^(3+)/Eu^(3+)在不同溶剂中形成超分子凝胶的能力。测试结果表明,不仅CDCn在DMF/H_(2)O和DMSO/H_(2)O两种混合溶剂中能形成超分子凝胶,而且CDCn与Tb^(3+)/Eu^(3+)在这两种混合溶剂中能通过配位作用形成金属凝胶。扫描电镜(SEM)观察表明,金属配位完全改变了有机凝胶的微观形貌;红外光谱研究证明金属凝胶中羧酸配体与金属离子发生了配位作用。流变学研究表明,金属离子的引入极大地提高了小分子凝胶的强度,且形成的金属凝胶具有完全可逆的剪切触变性。Four types of aromatic carboxylic acid compounds(CDCn(n=4,6,8,10))containing cholesterol groups were synthesized in this work,and their gelation properties in different solvents were tested.Moreover,the gelation abilities of the compounds consisted of these four compounds and Tb^(3+)/Eu^(3+)were also tested in different solvents.CDCn could form supramolecular gels in DMF/H_(2O)and DMSO/H_(2O)mixed solvents.And also,CDCn with Tb^(3+)/Eu^(3+)could formed metallogels in these two mixed solvents.SEM measurement revealed that the micromorpho-logy of the organogel was completely changed by coordination interaction.FTIR measurements demonstrated that there was the coordination interaction between CDCn and Tb^(3+)/Eu^(3+)in metallogels.The rheological measurement indicated that the introduction of metal ions dramatically improved the strength of supramolecular gels and the formed metallogels had the excellent reversible thixotropic property.

关 键 词：超分子凝胶 金属凝胶 芳香羧酸配体 配位自组装 剪切触变性 

分 类 号：O648[理学—物理化学]