Synthesis and characterization of a new bifunctional dye containing spirobenzopyran and cinnamoyl moiety

Kaihua Shen, Dong Hoon Choi

Research output: Contribution to journalArticle


A novel bifunctional dye containing Spirobenzopyran and cinnamoyl moiety has been prepared and its photochromic behavior following irradiation at different wavelengths of monochrome UV light was investigated. The colourless bifunctional dye in film or solution exhibits unusual photochromism through structural and geometrical transformation from Spirobenzopyran to merocyanine accompanying with photocrosslinking reaction in cinnamoyl moieties. Two kinds of photochemical reaction were achieved by irradiation at the different wavelengths of monochrome UV light (275 nm, 365 nm) selectively. The photochromic process of the bifunctional dye was discussed and the dynamic behaviors of the decolorization process were investigated.

Original languageEnglish
Pages (from-to)85-90
Number of pages6
JournalChinese Journal of Chemical Engineering
Issue number1
Publication statusPublished - 2005 Feb 1
Externally publishedYes



  • Cinnamoyl moiety
  • Photochromism
  • Spirobenzopyran

ASJC Scopus subject areas

  • Chemical Engineering(all)

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