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Conformational chirality of the biphenyl groups induced by the aggregation of poly{bis[4-(4’-(S)-2-methylbutoxy)-biphenoxy] phosphazene}

  • Organic materials
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Abstract

Poly{bis[4-(4’-(S)-2-methylbutoxy)biphenyloxy]phosphazene}(PP-C) was designed and successfully synthesized, and then characterized by means of FT-IR spectroscopy, 1H- and 31P-NMR, GPC spectroscopy, wide angle X-ray diffraction and differential scanning calorimetry. The results indicated that for PP-C, the M w is 2.18×105 and the PDI is 1.96. PP-C was a kind of crystallized polymer with a crystallizing point of -2.0 °C and a melting point of 28 °C. The conformational chirality of the PP-C molecules was studied using circular dichroism spectrum. It was found that in dilute THF solution, the biphenyl groups in the PP-C molecules twisted randomly. However, when the PP-C formed aggregates, the biphenyl groups tended to twist single-handedly, which was controlled by the adjacent chiral alkoxy groups.

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Authors and Affiliations

  1. Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China

    Xianhui Tang  (唐贤慧), Baozong Li, Yi Li  (李艺) & Yonggang Yang

Authors
  1. Xianhui Tang  (唐贤慧)
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  2. Baozong Li
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  3. Yi Li  (李艺)
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  4. Yonggang Yang
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Corresponding author

Correspondence to Yi Li  (李艺).

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Funded by the National Natural Science Foundation of China (No.21274098)

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Tang, X., Li, B., Li, Y. et al. Conformational chirality of the biphenyl groups induced by the aggregation of poly{bis[4-(4’-(S)-2-methylbutoxy)-biphenoxy] phosphazene}. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 31, 1162–1166 (2016). https://doi.org/10.1007/s11595-016-1506-5

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  • DOI: https://doi.org/10.1007/s11595-016-1506-5

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