title: Pyrrolo-[3,2-b]pyrroles for Photochromic Analysis of Halocarbons.
abstract: Dramatic photochromic-change of 2,5-bis(triphenylamine)-substituted N,N'-diphenylpyrrolo-[3,2-b]pyrrole (1) with halocarbons provides an effective route for halocarbon analysis with the naked eye. The visual detection range can reach as low as 10(-4) ∼ 10(-5) M (1-10 ppm) in CH3CN. This method can also be applied for detection of CHCl3 in water. Fabrication of a disposable paper test cartridge along with using a camera flash as the light source allows on-site halocarbon detection in seconds. Quantitative analysis for CHCl3 and CH2Cl2 have also been demonstrated.
authors.affiliation: Institute of Polymer Science and Engineering and ‡Department of Chemistry, National Taiwan University , Taipei 106, Taiwan ROC.
authors.forename: Jia-Ying
authors.initials: JY
authors.lastname: Wu
authors.affiliation: Institute of Polymer Science and Engineering and ‡Department of Chemistry, National Taiwan University , Taipei 106, Taiwan ROC.
authors.forename: Cheng-Han
authors.initials: CH
authors.lastname: Yu
authors.affiliation: Institute of Polymer Science and Engineering and ‡Department of Chemistry, National Taiwan University , Taipei 106, Taiwan ROC.
authors.forename: Jung-Jung
authors.initials: JJ
authors.lastname: Wen
authors.affiliation: Institute of Polymer Science and Engineering and ‡Department of Chemistry, National Taiwan University , Taipei 106, Taiwan ROC.
authors.forename: Chiou-Ling
authors.initials: CL
authors.lastname: Chang
authors.affiliation: Institute of Polymer Science and Engineering and ‡Department of Chemistry, National Taiwan University , Taipei 106, Taiwan ROC.
authors.forename: Man-kit
authors.initials: MK
authors.lastname: Leung
mesh_terms: D006846:Hydrocarbons, Halogenated / Q000032:analysis*; D055668:Photochemical Processes; D011758:Pyrroles / Q000737:chemistry*
chemical_list: D006846:Hydrocarbons, Halogenated; D011758:Pyrroles