title: A chromo-fluorogenic synthetic "canary" for CO detection based on a pyrenylvinyl ruthenium(II) complex.
abstract: The chromo-fluorogenic detection of carbon monoxide in air has been achieved using a simple, inexpensive system based on ruthenium(II). This probe shows exceptional sensitivity and selectivity in its sensing behavior in the solid state. A color response visible to the naked eye is observed at 5 ppb of CO, and a remarkably clear color change occurs from orange to yellow at the onset of toxic CO concentrations (100 ppm) in air. Even greater sensitivity (1 ppb) can be achieved through a substantial increase in turn-on emission fluorescence in the presence of carbon monoxide, both in air and in solution. No response is observed with other gases including water vapor. Immobilization of the probe on a cellulose strip allows the system to be applied in its current form in a simple optoelectronic device to give a numerical reading and/or alarm.
authors.affiliation: Centro de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Unidad Mixta Universidad Politécnica de Valencia-Universidad de Valencia , Camino de Vera s/n, 46022 Valencia, Spain.
authors.forename: María E
authors.initials: ME
authors.lastname: Moragues
authors.forename: Anita
authors.initials: A
authors.lastname: Toscani
authors.forename: Félix
authors.initials: F
authors.lastname: Sancenón
authors.forename: Ramón
authors.initials: R
authors.lastname: Martínez-Máñez
authors.forename: Andrew J P
authors.initials: AJ
authors.lastname: White
authors.forename: James D E T
authors.initials: JD
authors.lastname: Wilton-Ely
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D002248:Carbon Monoxide / Q000032:analysis*; D056831:Coordination Complexes / Q000138:chemical synthesis / Q000737:chemistry*; D005456:Fluorescent Dyes / Q000138:chemical synthesis / Q000737:chemistry*; D015394:Molecular Structure; D011721:Pyrenes / Q000138:chemical synthesis / Q000737:chemistry*; D012428:Ruthenium / Q000737:chemistry*; D012680:Sensitivity and Specificity; D013050:Spectrometry, Fluorescence; D014753:Vinyl Compounds / Q000138:chemical synthesis / Q000737:chemistry*
chemical_list: D000393:Air Pollutants; D056831:Coordination Complexes; D005456:Fluorescent Dyes; D011721:Pyrenes; D014753:Vinyl Compounds; D002248:Carbon Monoxide; D012428:Ruthenium