Optical-limiting properties of poly(arylene ethynylenes) containing thiophene ring

Authors

  • Guijiang Zhou,

    1. Organic Solids Laboratory, Center for Molecular Science, Institute of Chemistry, The Chinese Academy of Sciences, Beijing 100080, China
    2. Graduate School of the Chinese Academy of Sciences, Beijing 100039, China
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  • Yunqi Liu,

    1. Organic Solids Laboratory, Center for Molecular Science, Institute of Chemistry, The Chinese Academy of Sciences, Beijing 100080, China
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  • Cheng Ye

    Corresponding author
    1. Organic Solids Laboratory, Center for Molecular Science, Institute of Chemistry, The Chinese Academy of Sciences, Beijing 100080, China
    • Organic Solids Laboratory, Center for Molecular Science, Institute of Chemistry, The Chinese Academy of Sciences, Beijing 100080, China
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Abstract

Poly(arylene ethynylenes) containing thiophene ring were synthesized in good yield. In synthesis, pyridine was added to accelerate reaction owing to its phase transfer effect on CuI. The optical-limiting properties of the prepared polymers were investigated with a Q-switched Nd : YAG laser at 532 nm with 10-ns pulse width. The experiments showed that the order of the optical-limiting response of the polymers is poly(3-hexyl-2,5-thienyleneethylene) (P3) > poly(2,5-dihexyloxy-1,4-benzyleneethylene-3-hexyl-2,5-thienyleneethylene) (P2) > poly(9-hexyl-3,6-carbazoleethylene-3-hexyl-2,5-thienyleneethylene) (P1). It can be understood well by the comparison of their conjugation length and D-A structure. In addition, the results indicated that introducing the electron-rich aromatic ring into the polymer backbone to enhance the D-A structure would be an effective way to improve its optical-limiting property. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 93: 131–135, 2004

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