title: Polydiacetylene-based colorimetric and fluorescent chemosensor for the detection of carbon dioxide.
abstract: We developed a colorimetric and fluorescent turn-on carbon dioxide sensor that relies on a polydiacetylene, PDA-1, functionalized with amines and imidazolium groups. The pendant amines react with CO2 under basic conditions to form carbamoate anions, which partially neutralize the polymer's positive charges, inducing a phase transition. PDA-1 allows for the selective sensing of CO2 with high sensitivity, down to atmospheric concentrations. Naked-eye detection of CO2 is accomplished either in water solutions of PDA-1 or in the solid state with electrospun coatings of PDA-1 nanofibers.
authors.affiliation: Department of Chemistry and Nano Science, Global Top 5 Research Program, Ewha Womans University , Seoul 120-750, Korea.
authors.forename: Qingling
authors.initials: Q
authors.lastname: Xu
authors.forename: Songyi
authors.initials: S
authors.lastname: Lee
authors.forename: Yukyung
authors.initials: Y
authors.lastname: Cho
authors.forename: Myung Hwa
authors.initials: MH
authors.lastname: Kim
authors.forename: Jean
authors.initials: J
authors.lastname: Bouffard
authors.forename: Juyoung
authors.initials: J
authors.lastname: Yoon
mesh_terms: D000588:Amines / Q000737:chemistry; D002245:Carbon Dioxide / Q000032:analysis*; D003124:Colorimetry; D005456:Fluorescent Dyes / Q000737:chemistry*; D007093:Imidazoles / Q000737:chemistry; D057139:Nanofibers / Q000737:chemistry; D000078789:Polyacetylene Polymer; D011108:Polymers / Q000737:chemistry*; D053279:Polyynes / Q000737:chemistry*
chemical_list: D000588:Amines; D005456:Fluorescent Dyes; D007093:Imidazoles; D000078789:Polyacetylene Polymer; D011108:Polymers; D002245:Carbon Dioxide; D053279:Polyynes; C082361:polydiacetylene