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Journal of Polymer Research

, 21:597 | Cite as

Effect of oxygen on photodegradation of π-conjugated aromatic poly(1,3,4-oxadiazole)s

  • Xiaoqi Ran
  • Shixiong Yi
  • Liefeng Liang
  • Xiao Yang
Original Paper

Abstract

The effect of oxygen on photodegradation of π-conjugated aromatic poly(1,3,4-oxadiazole)s (POD) was studied in detail. The results obtained by tensile test, UV-spectra and ATR-FTIR revealed that the oxygen was indispensable during photodegradation of POD. The occurrence of photodegradation of POD must be combination of UV exposure and oxygen simultaneously. The state of oxygen during photodegradation of POD was investigated by nitrotetrazolium blue chloride (NBT) method. The result illustrated that the oxygen was transformed into superoxide anion radical through accepting one electron during UV exposure. Results of tensile tests and UV-spectra further proved that the superoxide anion radical could combine with excited POD to form an unstable product that lead to occurrence of photodegradation. Singlet oxygen was also investigated and the result showed that POD appeared to be stable to singlet oxygen.

Keywords

Poly(1,3,4-oxadiazole)s Photodegradation Superoxide anion radical 

Notes

Acknowledgments

This study was supported by the Fundamental Research Funds for the Central Universities (XDJK2012B013) and the National Natural Science Youth Foundation of China (Grant No. 51303150).

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Copyright information

© Springer Science+Business Media Dordrecht 2014

Authors and Affiliations

  • Xiaoqi Ran
    • 1
  • Shixiong Yi
    • 2
  • Liefeng Liang
    • 2
  • Xiao Yang
    • 2
  1. 1.College of Chemistry and Chemical EngineeringSouthwest UniversityChongqingChina
  2. 2.College of Textiles and GarmentsSouthwest UniversityChongqingChina

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