Journal of Materials Science

, Volume 55, Issue 4, pp 1854–1864 | Cite as

Triazine-based covalent organic polycalix[4]arenes for highly efficient and reversible iodine capture in water

  • Zhizhong Zhang
  • Liang LiEmail author
  • Duo An
  • Hanxue Li
  • Xinghua ZhangEmail author
Polymers & biopolymers


Novel triazine-based covalent organic polycalix[4]arenes, CalCOPs, were synthesized via the copolymerization of calix[4]arene derivatives and 2,4,6-trichloro-1,3,5-triazine (TCT) or 2,4-dichloro-1,3,5-triazine (DCT). The resulting CalCOPs have permanent pores that can be regulated by the variation of the alkyl chain lengths of the calixarene backbones and the reaction sites. With the alkyl chain length at the low rim in calixarene units increasing from ethyl to butyl during the reaction, the Brunauer–Emmett–Teller surface areas decrease with surface areas of 280, 31.5, 18.4 and 1.6 m2 g−1 obtained for CalCOP1, CalCOP2, CalCOP3 and CalCOP4, respectively. Among these CalCOPs, CalCOP1 shows ultrahigh absorption for iodine capture in a water solution with an uptake of up to 232 wt%. Furthermore, the adsorption and release efficiency of iodine were obtained by using the UV–Vis spectroscopy. In addition, these polymers can be recycled at least five times while maintaining high removal capacity, suggesting that CalCOPs are ideal absorbent materials for reversible iodine capture in the mitigation of environmental issues.



We are grateful for the National Natural Science Foundation of China (Nos. 21502116 and 21871182) and the Talent Development Fund of Young and Middle-aged Science and technology of Shanghai Institute of Technology (39120K199045-A06) for financial support.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Supplementary material

10853_2019_4164_MOESM1_ESM.docx (4.3 mb)
Supplementary material 1 (DOCX 4354 kb)


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© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.School of Chemical and Environmental EngineeringShanghai Institute of TechnologyShanghaiPeople’s Republic of China

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