Organic Letters 2003-05-01

Fluorescence sensing of ammonium and organoammonium ions with tripodal oxazoline receptors.

Kyo Han Ahn, Hui-Young Ku, Yusin Kim, Sung-Gon Kim, Young Kook Kim, Hyung Su Son, Ja Kang Ku

Index: Org. Lett. 5(9) , 1419-22, (2003)

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Abstract

A new class of fluorescence sensors for ammonium and organoammonium ions has been disclosed. One of the sensors, an alaninol-derived tripodal oxazoline (1a) shows significant fluorescence enhancement upon binding NH(4)(+) but little response toward K(+), Na(+), and Mg(2+) ions. Owing to its chiral environment, a phenylglycinol-derived tripodal oxazoline (1b) shows chiral discrimination in fluorescence upon binding enantiomeric guests. [reaction: see text]

Related Compounds

  • L-Alaninol
  • 2-Anilinoethanol
  • DL-Alaninol

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