title: Pyreno[2,1-b]pyrrole and bis(pyreno[2,1-b]pyrrole) as selective chemosensors of fluoride ion: a mechanistic study.
abstract: Pyreno[2,1-b]pyrrole and its dimeric derivative display excellent selectivity and sensitivity for detection of fluoride ion, in comparison with chloride, bromide, iodide, acetate, dihydrogen phosphate, hydrogen sulfate, perchlorate, nitrate, and thiocyanate ions. The hydrogen bonding with fluoride ion, both in formation and in subsequent dissociation, provides remarkable colorimetric and fluorescent changes in the visible region that are advantageous for real-time and on-site application. Detailed NMR and dynamic fluorescence spectroscopic analyses establish the associated mechanism.
authors: Department of Chemistry, National Taiwan University, Taipei 106, Taiwan.
authors: Chia-I
authors: CI
authors: Lin
authors: Srinivasan
authors: S
authors: Selvi
authors: Jim-Min
authors: JM
authors: Fang
authors: Pi-Tai
authors: PT
authors: Chou
authors: Chin-Hung
authors: CH
authors: Lai
authors: Yi-Ming
authors: YM
authors: Cheng
mesh_terms: D002625:Chemistry, Organic / Q000379:methods*; D004121:Dimethyl Sulfoxide / Q000737:chemistry; D005459:Fluorides / Q000032:analysis*; D006860:Hydrogen Bonding; D007477:Ions; D009682:Magnetic Resonance Spectroscopy; D019563:Mechanics; D011721:Pyrenes / Q000737:chemistry*; D011758:Pyrroles / Q000737:chemistry*; D012680:Sensitivity and Specificity; D012997:Solvents; D013050:Spectrometry, Fluorescence; D017186:Titrimetry
chemical_list: D007477:Ions; D011721:Pyrenes; C520775:Pyreno(2,1-b)pyrrole; D011758:Pyrroles; D012997:Solvents; C520776:bis(pyreno(2,1-b)pyrrole); D005459:Fluorides; D004121:Dimethyl Sulfoxide