Pyrene excimer-based calix[4]arene FRET chemosensor for mercury(II)

Young Hoon Lee, Min Hee Lee, Jun Feng Zhang, Jong Seung Kim

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Abstract

A novel calix[4]arene derivative locked in the 1,3-alternate conformation (2) bearing two pyrene and rhodamine fluorophores was synthesized as a selective sensor for the Hg2+ ion. The sensoring is based on FRET from pyrene excimer emissions to ring-opened rhodamine absorption upon complexation of the Hg2+ ion. Addition of Hg2+ to a mixed solution of 2 gave significantly enhanced fluorescence at ∼576 nm via FRET with excitation at 343 nm. We also found that the pyrene excimer emissions formed by the intramolecular π-π interactions are more effective in obtaining strong FRET bands than those by intermolecular π-π interactions.

Original languageEnglish
Pages (from-to)7159-7165
Number of pages7
JournalJournal of Organic Chemistry
Volume75
Issue number21
DOIs
Publication statusPublished - 2010 Nov 5

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ASJC Scopus subject areas

  • Organic Chemistry

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