Syntheses and photophysical properties of aminobenzopyranoxanthene dyes containing various alkyl chains at amine moieties

Shinichiro Kamino, Masaru Tanioka, Daisuke Sawada, Shuichi Enomoto

Research output: Contribution to journalArticle

3 Citations (Scopus)


Aminobenzopyranoxanthene (ABPX) dyes containing linear n-alkyl chains at amino groups were synthesized, and their cis and trans stereoisomers were isolated. Detailed spectrophotometric studies revealed that all the ABPX derivatives exhibited fluorescence emission in the far-red and near-infrared wavelength regions, and their fluorescence quantum efficiency increased with increasing n-alkyl chain length. Almost no differences in photophysical properties were observed between the cis and trans stereoisomers.

Original languageEnglish
Pages (from-to)1167-1176
Number of pages10
Issue number2
Publication statusPublished - Jan 1 2017


ASJC Scopus subject areas

  • Analytical Chemistry
  • Pharmacology
  • Organic Chemistry

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