Bifunctional fluorescent calix[4]arene chemosensor for both a cation and an anion

Yeon Lee Ji, Kuk Kim Sung, Hwa Jung Jong, Jong Seung Kim

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(Chemical Equation Presented) A new fluorogenic cone calix[4]triazacrown-5 (1) bearing two pyrene amide groups and its structural analogue 2 have been prepared. Excited at 343 nm, 1 and 2 reveal excimer emissions at 448 and 472 nm, respectively. When heavy metal ions such as Pb2+ and Co2+ are bound to 1, the fluorescence intensities of both monomer and excimer are quenched whereas H bonding-assisted F- binding to 1 gives rise to a quenched monomer emission with little excimer emission change.

Original languageEnglish
Pages (from-to)1463-1466
Number of pages4
JournalJournal of Organic Chemistry
Issue number4
Publication statusPublished - 2005 Feb 18
Externally publishedYes


ASJC Scopus subject areas

  • Organic Chemistry

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