Red fluorescence from the merocyanine form of spirobenzopyran

Kazuyuki Horie*, Katsuhiko Hirao, Itaru Mita, Yoshitaka Takubo, Tatsuki Okamoto, Masakazu Washio, Seiichi Tagawa, Yoneho Tabata

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

30 Citations (Scopus)


A brilliant red emission observed for the colored form of 1,3,3-trimethyl-6′-nitrospiro[indoline-2,2′-[2H]benzopyran] both in solution and in polymer films was ascertained to be a fluorescence from its merocyanine form. The fluorescence lifetimes were measured to be 1.8 to 3.6 ns in polycarbonate and other polymer films and 230 ps in ethanol solution by picosecond laser flash and pulse radiolysis spectroscopies.

Original languageEnglish
Pages (from-to)499-502
Number of pages4
JournalChemical Physics Letters
Issue number6
Publication statusPublished - 1985 Sept 20
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry


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