Synthesis and optical properties of hyperbranched polyarylenes

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

  • Han Peng
  • Lin Cheng
  • Jacky W.Y. Lam
  • Kaitian Xu
  • Yuping Dong
  • Dezhen Zhang
  • Yi Huang
  • Zhongde Xu
  • Ben Zhong Tang

Detail(s)

Original languageEnglish
Pages (from-to)315-320
Journal / PublicationOptical Materials
Volume21
Issue number1-3
Publication statusPublished - Jan 2003
Externally publishedYes

Abstract

High molecular weight, hyperbranched polyarylenes were synthesized in high isolation yields by the copolycyclotrimerizations of 2,5-diethynylthiophene (1), 4,4′-biphenyldiyne (2), and 2,7-diethynylfluorenes (3) with 1-heptyne (4) and 1-dodecyne (5) using TaCl5-Ph4Sn as the catalyst in toluene. The structures of the polymers were characterized by IR, NMR, TGA, and UV analyses. All the polymers exhibited outstanding thermal stability and emitted strong blue light, whose intensities are higher than that of poly(1-phenyl-1-octyne), a well-known highly emissive polyacetylene. Little red shift was observed in the photoluminescence of the polymer thin films. The polymers strongly attenuated intense pulses of 532 nm laser pulses.

Research Area(s)

  • Alkyne polycyclotrimerization, Conjugated polymers, Hyperbranched Polyarylenes, Light emission, Optical limiting, Polymer synthesis

Citation Format(s)

Synthesis and optical properties of hyperbranched polyarylenes. / Peng, Han; Luo, Jingdong; Cheng, Lin et al.
In: Optical Materials, Vol. 21, No. 1-3, 01.2003, p. 315-320.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review