A new NLO polyurethane with a tricyanovinyl group

Han Young Woo, Hong Ku Shim, Kwang Sup Lee

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

A new functionalized polyurethane structure with a heteroaromatic thiophene ring having a tricyanovinyl group in the polymer side chain was synthesized. The resulting polymer was soluble in N-methylpyrrolidinone and could be processed into good optical quality films by spin casting at ca. 100 °C. The second-order nonlinear coefficient, d33, was determined to be 51 pm/V from measuring the second harmonic generation (SHG) for a thin polymer film. The outstanding orientational stability of the aligned chromophores was observed up to about 150 °C, which originated from the rigid polymer backbone and the stabilizing function of the hydrogen bridges formed between the neighboring polyurethane chains.

Original languageEnglish
Pages (from-to)136-137
Number of pages2
JournalSynthetic Metals
Volume101
Issue number1-3
Publication statusPublished - 1999 Dec 1
Externally publishedYes

    Fingerprint

Keywords

  • Chromophore
  • Nonlinear optics (NLO)
  • Polyurethane
  • Second harmonic generation (SHG)
  • Tricyanovinyl group

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Cite this

Woo, H. Y., Shim, H. K., & Lee, K. S. (1999). A new NLO polyurethane with a tricyanovinyl group. Synthetic Metals, 101(1-3), 136-137.