高等学校化学学报 ›› 2023, Vol. 44 ›› Issue (10): 20230175.doi: 10.7503/cjcu20230175

• 高分子化学 • 上一篇    下一篇

一种多重刺激响应性多色荧光水凝胶的制备

邹少爽1,2, 杨朋1(), 刘涛1()   

  1. 1.山东师范大学化学化工与材料科学学院, 济南 250014
    2.齐鲁师范学院化学与化工学院, 济南 250200
  • 收稿日期:2023-04-06 出版日期:2023-10-10 发布日期:2023-07-04
  • 通讯作者: 杨朋,刘涛 E-mail:yangpeng@sdnu.edu.cn;ssliutao@sdnu.edu.cn
  • 基金资助:
    国家自然科学基金(22073051);山东省优秀青年基金(ZR2021YQ13)

Synthesis of a Multiple Stimulus-responsive Multicolor Fluorescent Hydrogel

ZOU Shaoshuang1,2, YANG Peng1(), LIU Tao1()   

  1. 1.College of Chemistry,Chemical Engineering and Materials Science,Shandong Normal University,Jinan 250014,China
    2.College of Chemistry and Chemical Engineering,Qilu Normal University,Jinan 250200,China
  • Received:2023-04-06 Online:2023-10-10 Published:2023-07-04
  • Contact: YANG Peng, LIU Tao E-mail:yangpeng@sdnu.edu.cn;ssliutao@sdnu.edu.cn
  • Supported by:
    the National Natural Science Foundation of China(22073051);the Natural Science Foundation of Shandong Province, China(ZR2021YQ13)

摘要:

基于分子结构设计理论, 设计并合成了一种结构新颖的吡啶羧酸类荧光配体甲基丙烯酸-2-(6-脲基吡啶羧酸)-乙酯(UPA). 采用自由基聚合法, 以UPA和磺酸甜菜碱型两性离子3-[(3-丙烯酰丙基)二甲胺基]丙基-1-磺酸内盐(DMA)为单体, 无机黏土为物理交联剂, 通过光固化将荧光配体引入水凝胶结构中, 再经过Eu3+或Tb3+配位后, 在水凝胶中形成镧系配合物, 构筑了机械强度高、 自修复速度快、 刺激响应性多(温度、 pH、 离子强度等)且发光效率高的新型智能稀土杂化水凝胶材料, 解决了稀土发光材料在水相中稳定性差、 易荧光猝灭以及传统水凝胶力学性能差、 功能性单一等问题, 为信息防伪、 生物成像及荧光标记等领域材料的制备提供了新思路.

关键词: 水凝胶, 稀土发光, 多色荧光, 多重刺激响应性

Abstract:

On the basis of molecular structure design theory, a novel fluorescent ligand, 6-{3-[2-(methacryloyloxy) ethyl] ureido} picolinic acid(UPA), was designed and synthesized. The hydrogels were prepared by the free radical polymerization with UPA and zwitterionic sulfobetaine(DMA) as monomers, clay as a physical crosslinker. The fluorescent ligand was introduced into the hydrogel structure by UV light curing, and then the lanthanide complex was formed in the hydrogel after Eu3+ or Tb3+ coordination, and a new intelligent rare-earth hybrid hydrogel material with high mechanical strength, good self-healing properties, multiple stimulus responsiveness(temperature, pH, the intensity of ion, etc.) and high luminescence efficiency was constructed, the problems such as poor stability and easy fluorescence quenching in the aqueous phase of rare earth luminescent materials, and poor mechanical properties and single function of traditional hydrogels were solved. It provides a new idea for the preparation of materials in the fields of information security and encryption, biological imaging, fluorescent labeling and so on.

Key words: Hydrogel, Rare earth luminescence, Multicolor fluorescent, Multiple stimulus responsiveness

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