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Synthesis and characterization of inclusion complexes of aliphatic-aromatic poly(Schiff base)s with β-cyclodextrin (highlight)

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Abstract

This paper describes the formation of polymer inclusion complexes(polymer-CD-ICs) between β-cyclodextrin(β-CD) and aliphatic-aromatic poly(Schiff base)s. Fourier transform infrared(FTIR) spectroscopy, 1H nuclear magnetic resonance spectroscopy(1H-NMR), thermogravimetric analysis(TGA) and X-ray diffraction(XRD) have been used to observe the formation of polymer-CD-ICs. In FTIR spectra, the characteristic peaks of β-CD at 3391 cm−1 shifted to 3418 cm−1 and the intense peak at 1602 cm−1 due to the –C = N– stretching vibration diminished after formation of inclusion complexes. Compared the 1H-NMR of polymer-CD-ICs with β-CD, the chemical shift of the protons H-3, H-5 have shifted to higher field after the formation of inclusion complexes, which is perhaps due to the interaction of these protons with polymers. The TGA analysis revealed that the polymer-CD-ICs had better thermal stability than β-CD, suggesting that the polymer increased the stability of β-CD. The X-ray diffraction patterns displayed that the strong peak for both polymer-CD-ICs at approximately 20.0° (2θ) may confirm their IC formation.

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Acknowledgements

We gratefully acknowledge the support of National Natural Science Foundation of China(No.20671077), Gansu provincial Natural Science Foundation of China(No.3ZS061-A25–027), Scientific Research Fund for youth of Gansu province in China (No.3YS051-A25–010),Scientific Research Fund of Gansu Provincial Education Department(No.0601–24)and Key Laboratory of Eco-Environment-Related Polymer Materials(Northwest Normal University) Ministry of Education.

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  1. College of Chemistry and Chemical Engineering, Key Laboratory of Polymer Materials of Gansu Province, Northwest Normal University, Lanzhou, Gansu, 730070, P.R. China

    Zhang Youming, Deng Xinrong, Wang Liangcheng & Wei Taibao

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  1. Zhang Youming
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  2. Deng Xinrong
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  3. Wang Liangcheng
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Correspondence to Zhang Youming.

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Youming, Z., Xinrong, D., Liangcheng, W. et al. Synthesis and characterization of inclusion complexes of aliphatic-aromatic poly(Schiff base)s with β-cyclodextrin (highlight). J Incl Phenom Macrocycl Chem 60, 313–319 (2008). https://doi.org/10.1007/s10847-007-9379-z

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