title: Bis(isoquinoline N-oxide) pincers as a new type of metal cation dual channel fluorosensor.
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.
authors.affiliation: Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Málaga, E-29071 Málaga, Spain.
authors.forename: Daniel
authors.initials: D
authors.lastname: Collado
authors.forename: Ezequiel
authors.initials: E
authors.lastname: Perez-Inestrosa
authors.forename: Rafael
authors.initials: R
authors.lastname: Suau
authors.forename: Jean-Pierre
authors.initials: JP
authors.lastname: Desvergne
authors.forename: Henri
authors.initials: H
authors.lastname: Bouas-Laurent
mesh_terms: 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
chemical_list: D002412:Cations; D004987:Ethers; D005456:Fluorescent Dyes; D007476:Ionophores; D007546:Isoquinolines; D008670:Metals; D008094:Lithium; D008274:Magnesium; D002118:Calcium