title: Carbon dioxide gas sensor based on ionic liquid-induced electrochemiluminescence.
abstract: Electrochemiluminescence of the luminol-O(2) system in an electrolyte-free N,N-dimethylformamide (DMF)-dipropylamine (DPA) cosolution is induced by the formation of a carbamate ionic liquid (IL) from the reaction between CO(2) and DPA, on the basis of which a facile ECL sensor for measuring atmospheric CO(2) has been developed. This ECL sensing method shows several advantages in the detection of CO(2), such as high safety, high selectivity, wide linear response range, and good sensitivity. The gas sensor was found to have a linear response range from 100 ppm to 100 v/v% and a detection limit of 80 ppm (at signal-to-noise ratio of 3). This is the first reported IL-induced ECL sensor for a gas, thus the principle of this type of sensor and the IL-induced ECL mechanism have been demonstrated in detail.
authors.affiliation: MOE Key Laboratory of Analysis and Detection Technology for Food Safety, Department of Chemistry, Fuzhou University, Fujian 350108, China.
authors.forename: Lichan
authors.initials: L
authors.lastname: Chen
authors.forename: Danjun
authors.initials: D
authors.lastname: Huang
authors.forename: Shuyan
authors.initials: S
authors.lastname: Ren
authors.forename: Yuwu
authors.initials: Y
authors.lastname: Chi
authors.forename: Guonan
authors.initials: G
authors.lastname: Chen
mesh_terms: D002245:Carbon Dioxide / Q000032:analysis*; D004126:Dimethylformamide; D055664:Electrochemical Techniques / Q000379:methods*; D005559:Formamides / Q000737:chemistry; D005740:Gases / Q000032:analysis; D052578:Ionic Liquids / Q000737:chemistry*; D008163:Luminescent Measurements / Q000379:methods*; D008165:Luminol / Q000737:chemistry; D011437:Propylamines / Q000737:chemistry
chemical_list: D005559:Formamides; D005740:Gases; D052578:Ionic Liquids; D011437:Propylamines; D002245:Carbon Dioxide; D008165:Luminol; D004126:Dimethylformamide