title: A novel colorimetric fluoride sensor based on a semi-rigid chromophore controlled by hydrogen bonding.
abstract: A novel semi-rigid latent chromophore E1, containing an amide subunit activated by an adjacent semi-rigid intramolecular hydrogen-bonding (IHB) unit, was designed for the detection of fluoride ion by the 'naked-eye' in CH3CN. Comparative studies on structural analogs (E2, E3, and E4) provided significant insight into the structural and functional role of the amide N-H and IHB segment in the selective recognition of fluoride ions. The deprotonation of the amide N-H followed by the enhancement of intramolecular charge transfer (ICT) induced the colorimetric detection of E1 for fluoride ion.
authors: Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China.
authors: Jiling
authors: J
authors: Li
authors: Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China.
authors: Xiaoyong
authors: X
authors: Xu
authors: Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China.
authors: Xusheng
authors: X
authors: Shao
authors: Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China.
authors: Zhong
authors: Z
authors: Li
mesh_terms: D000577:Amides / Q000737:chemistry; D003124:Colorimetry / Q000379:methods*; D005456:Fluorescent Dyes / Q000138:chemical synthesis / Q000737:chemistry*; D005459:Fluorides / Q000032:analysis*; D006860:Hydrogen Bonding
chemical_list: D000577:Amides; D005456:Fluorescent Dyes; D005459:Fluorides
keywords: amide; fluoride ion sensor; hydrogen bonding; naked-eye; semi-rigid