Synthesis of Biindole-Diazo conjugates as a colorimetric anion receptor

Gang Woo Lee, Nam Kyun Kim, Kyu Sung Jeong

Research output: Contribution to journalArticlepeer-review

49 Citations (Scopus)


A colorimetric anion receptor based on an indole scaffold has been synthesized by incorporating an azobenzene chromophore to the 5-position of indole. The receptor binds anions by hydrogen bonds which are effectively transmitted through resonance to the chromophore to give rise to color changes. The cyanide ion induced a pronounced color change from light yellow to reddish orange, but less intense or negligible changes were observed with the other anions examined here.

Original languageEnglish
Pages (from-to)2634-2637
Number of pages4
JournalOrganic Letters
Issue number11
Publication statusPublished - 2010 Jun 4

All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Physical and Theoretical Chemistry
  • Organic Chemistry


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