Bis(isoquinoline N-oxide) pincers as a new type of metal cation dual channel fluorosensor.
[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.
Collado
Daniel
D
Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Málaga, E-29071 Málaga, Spain.
Perez-Inestrosa
Ezequiel
E
Suau
Rafael
R
Desvergne
Jean-Pierre
JP
Bouas-Laurent
Henri
H
D015374:Biosensing Techniques / Q000379:methods*; D002118:Calcium / Q000032:analysis; D002412:Cations / Q000032:analysis; D004987:Ethers / Q000737:chemistry; D005456:Fluorescent Dyes / Q000737:chemistry*; D007476:Ionophores / Q000737:chemistry; D007546:Isoquinolines / Q000737:chemistry*; D008094:Lithium / Q000032:analysis; D008274:Magnesium / Q000032:analysis; D008670:Metals / Q000032:analysis*; D013050:Spectrometry, Fluorescence
D002412:Cations; D004987:Ethers; D005456:Fluorescent Dyes; D007476:Ionophores; D007546:Isoquinolines; D008670:Metals; D008094:Lithium; D008274:Magnesium; D002118:Calcium