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

doi:10.11896/cldb.23090162

材料导报

2025, Vol. 39

Issue (3): 23090162-6 https://doi.org/10.11896/cldb.23090162

高分子与聚合物基复合材料

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

薛敏^*, 芦卓妍, 俞露露, 丁瑶, 陈茎

西安文理学院化学工程学院,西安 710065

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

XUE Min^*, LU Zhuoyan, YU Lulu, DING Yao, CHEN Jing

School of Chemical Engineering, Xi'an University, Xi'an 710065, China

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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Tb³⁺/Eu³⁺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/H₂O和DMSO/H₂O两种混合溶剂中能形成超分子凝胶,而且CDCn与Tb³⁺/Eu³⁺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。

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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

Abstract: 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 Tb³⁺/Eu³⁺ were also tested in different solvents. CDCn could form supramolecular gels in DMF/H₂O and DMSO/H₂O mixed solvents. And also, CDCn with Tb³⁺/Eu³⁺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 Tb³⁺/Eu³⁺ 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.

Key words: supramolecular gels metallogels aromatic carboxylic ligands coordination self-assembly thixotropic property

出版日期: 2025-02-10 发布日期: 2025-02-05

ZTFLH:

O648

基金资助: 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)

通讯作者: *薛敏,博士,西安文理学院化学工程学院教授。主要从事分子凝胶、金属凝胶、功能配合物材料的创新制备及其性能与应用研究。xuemin@xawl.edu.cn

引用本文:

薛敏, 芦卓妍, 俞露露, 丁瑶, 陈茎. 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[J]. 材料导报, 2025, 39(3): 23090162-6.
XUE Min, LU Zhuoyan, YU Lulu, DING Yao, CHEN Jing. Preparation and Rheological Properties of Organogels and Metallogels Based on Aromatic Carboxylic Ligands. Materials Reports, 2025, 39(3): 23090162-6.

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http://www.mater-rep.com/CN/10.11896/cldb.23090162 或 http://www.mater-rep.com/CN/Y2025/V39/I3/23090162

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