Polymer Bulletin

, Volume 76, Issue 2, pp 989–1006 | Cite as

Baicalein-p-sulfonatocalix[n]arenes inclusion complexes: characterization, antioxidant ability and stability

  • Jianbin ChaoEmail author
  • Miao Xu
  • Xiaolu Wang
  • Zhiqiang Guo
Original Paper


The baicalein (Ba) is extracted from the roots of traditional Chinese medicine plant, Scutellaria baicalensis Georgi. Ba has attracted more attention for the high medicinal value, but the low oxidation resistance, poor thermal and photostability prevent its application. In this paper, inclusion complexes of Ba and p-sulfonatocalix[n]arenes (SCXn, n = 4, 6, 8) were prepared and characterized. The prepared complexes were characterized by fluorescence spectroscopy, Fourier transform infrared spectroscopy, proton nuclear magnetic resonance spectroscopy (1H NMR), and atomic force microscopy. The fluorescence titration experiment confirmed Ba and SCXn formed inclusion complexes at a stoichiometry of 1:1. A cap-type inclusion mode between the host and guest molecules could infer from 1H NMR spectroscopy. In addition, antioxidant activity, thermal stability and photostability of Ba were enhanced by forming inclusion complexes with SCXn which were favorable to improving the bioavailability of Ba. Finally, toxicity studies showed that the toxicity of these inclusion compounds Ba/SCXn was not remarkably different from that of the Ba, which was advantageous for the application and development of the Ba/SCXn.


Baicalein p-Sulfonatocalix[n]arenes Inclusion complex Antioxidant activity 



The work was supported by the National Natural Science Foundation of China (No. 21472118,21672131), the Program for the Top Young and Middle-aged Innovative Talents of Higher Learning Institutions of Shanxi (No. 2013802), Talents Support Program of Shanxi Province (No. 2014401), Shanxi Province Outstanding Youth Fund (No. 2014021002).


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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Jianbin Chao
    • 1
    Email author
  • Miao Xu
    • 1
    • 2
  • Xiaolu Wang
    • 1
    • 2
  • Zhiqiang Guo
    • 1
  1. 1.Research Institute of Applied ChemistryShanxi UniversityTaiyuanPeople’s Republic of China
  2. 2.School of Chemistry and Chemical EngineeringShanxi UniversityTaiyuanPeople’s Republic of China

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