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Gelation process visualized by aggregation-induced emission fluorogens

Author

Listed:
  • Zhengke Wang

    (MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Zhejiang University
    Key Laboratory of Adsorption and Separation Materials and Technologies of Zhejiang Province)

  • Jingyi Nie

    (MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Zhejiang University
    Key Laboratory of Adsorption and Separation Materials and Technologies of Zhejiang Province)

  • Wei Qin

    (Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Hong Kong University of Science and Technology)

  • Qiaoling Hu

    (MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Zhejiang University
    Key Laboratory of Adsorption and Separation Materials and Technologies of Zhejiang Province)

  • Ben Zhong Tang

    (Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Hong Kong University of Science and Technology)

Abstract

Alkaline-urea aqueous solvent system provides a novel and important approach for the utilization of polysaccharide. As one of the most important polysaccharide, chitosan can be well dissolved in this solvent system, and the resultant hydrogel material possesses unique and excellent properties. Thus the sound understanding of the gelation process is fundamentally important. However, current study of the gelation process is still limited due to the absence of direct observation and the lack of attention on the entire process. Here we show the entire gelation process of chitosan LiOH-urea aqueous system by aggregation-induced emission fluorescent imaging. Accompanied by other pseudo in situ investigations, we propose the mechanism of gelation process, focusing on the formation of junction points including hydrogen bonds and crystalline.

Suggested Citation

  • Zhengke Wang & Jingyi Nie & Wei Qin & Qiaoling Hu & Ben Zhong Tang, 2016. "Gelation process visualized by aggregation-induced emission fluorogens," Nature Communications, Nature, vol. 7(1), pages 1-8, November.
    • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms12033
    DOI: 10.1038/ncomms12033
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    Cited by:

    1. Koning, Jesper & Indekeu, Joseph O., 2020. "Landing-limited aggregation and prime number detection," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 552(C).

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