| 成旭,李子琪,黄丽婷,张红奎,冯宇.化学通报,2025,88(7):777-783. |
| 一类外围三氟甲基修饰的聚苄醚树状分子有机凝胶：聚集诱导发光增强和氟离子检测 |
| Peripherally Trifluoromethyl-Decorated Poly(benzyl ether) Dendritic Organogels: Aggregation-Induced Enhanced Emission and Selective Fluoride Ion Detection |
| 投稿时间：2025-03-02 修订日期：2025-03-18 |
| DOI： |
| 中文关键词: 树状分子 有机凝胶 聚集诱导发光增强 氟离子检测 |
| 英文关键词:Dendrimer Organogelator Aggregation-induced enhanced emission Fluoride ion detection |
| 基金项目:国家自然科学基金项目(21871270)和江苏省自然科学基金项目(BK20241942)资助 |
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| 中文摘要: |
| 树状分子作为一类具有高度支化结构的大分子,其形成的凝胶材料巧妙地结合了有机小分子凝胶的动态可逆性和聚合物凝胶的结构稳定性双重优势。然而,与小分子凝胶相比,树状分子凝胶的研究仍处于起步阶段,这为设计和开发新型多功能树状分子凝胶体系带来了机遇与挑战。基于此,本论文设计合成了一类外围三氟甲基修饰和核心蒽酰腙官能团修饰的聚苄醚型树状分子凝胶因子G-3。成胶性能测试表明,G-3在9种有机溶剂和混合溶剂中均表现出优异的凝胶性能,其最低临界凝胶浓度(CGC)可达7.7 mg/mL。值得注意的是,该树状分子展现出显著的聚集诱导发光增强(AIEE)特性。更为重要的是,基于G-3的凝胶体系对氟离子表现出优异的选择性识别能力,并伴随着明显的颜色变化,这一特性为其在氟离子传感领域的应用提供了可能。 |
| 英文摘要: |
| Dendrimers, as a class of highly branched macromolecules with well-defined architectures, have emerged as promising gelators that uniquely integrate the dynamic reversibility of low-molecular-weight gels (LMWGs) with the structural robustness of polymeric gels. However, compared to the well-established LMWG systems, dendritic gels remain relatively underexplored. Therefore, the development of multifunctional dendritic gel systems presents formidable challenges. In this paper, we have designed and synthesized a new poly(benzyl ether) dendritic gelator (G-3) functionalized with peripheral trifluoromethyl groups and an anthracene-based hydrazone core. Through detailed gelation studies, it was found that G-3 possesses outstanding gelation abilities in nine diverse organic solvents and solvent mixtures, reaching a remarkably low critical gelation concentration (CGC) of 7.7 mg/mL. Interestingly, the aggregation-induced enhanced emission (AIEE) phenomenon observed in this dendritic system is attributed to the restricted intramolecular rotation of the anthracene-based hydrazone core upon aggregation. Most significantly, the G-3-based gel system displays outstanding selectivity and sensitivity toward fluoride ions, accompanied by a visually detectable colorimetric response, thereby positioning it as a promising candidate for fluoride ion sensing applications. |
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