Chem. J. Chinese Universities ›› 2023, Vol. 44 ›› Issue (10): 20230175.doi: 10.7503/cjcu20230175

• Polymer Chemistry • Previous Articles     Next Articles

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)

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

CLC Number: 

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