Bis(isoquinoline N-oxide) pincers as a new type of metal cation dual channel fluorosensor

Org Lett. 2002 Mar 7;4(5):855-8. doi: 10.1021/ol025568m.

Abstract

[structure: see text] A new type of donor-spacer-acceptor podand system has been synthesized and proved as an efficient dual channel fluorosensor for Li+, Mg2+, and Ca2+. The known ability for the N-oxide function to bind Lewis acids is the key step in the appearance of a new emitting charge-transfer (CT) excited state. The occurrence of this CT state for alkaline earth (Mg2+ and Ca2+) and not for alkaline metals (Li+) provided a new type of dual channel fluorosensors.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Biosensing Techniques / methods*
  • Calcium / analysis
  • Cations / analysis
  • Ethers / chemistry
  • Fluorescent Dyes / chemistry*
  • Ionophores / chemistry
  • Isoquinolines / chemistry*
  • Lithium / analysis
  • Magnesium / analysis
  • Metals / analysis*
  • Spectrometry, Fluorescence

Substances

  • Cations
  • Ethers
  • Fluorescent Dyes
  • Ionophores
  • Isoquinolines
  • Metals
  • Lithium
  • Magnesium
  • Calcium