title: Fluoride-responsive gelator and colorimetric sensor based on simple and easy-to-prepare cyano-substituted amide.
abstract: A new and easy-to-prepare gelator based on cyano-substituted amide (BPNIA) was designed and synthesized. BPNIA could form thermoreversible gel in DMSO-H(2)O (v/v, 9 : 1) and ultrasound-stimulated gel in DMSO. FT-IR, UV-vis and XRD spectra indicated that the gelator molecules self-assemble into a fibrous network resulting from the cooperation of intermolecular hydrogen bonding, π-π stacking and cyano interactions. BPNIA can act as a highly selective colorimetric sensor for fluoride in DMSO, overcoming the interference of H(2)PO(4)(-), AcO(-) and other halide anions. The deprotonation of the NH groups is responsible for the dramatic color change from colorless to yellow. Interestingly, the organogel of BPNIA could allow a two channel fluoride response by proton controlled reversible sol-gel transition and color changes.
authors: State Key Laboratory of Supramolecular Structure and Materials, Jilin University, 2699 Qianjin Avenue, Changchun 130012, P.R. China.
authors: Yuping
authors: Y
authors: Zhang
authors: Shimei
authors: S
authors: Jiang
mesh_terms: D000577:Amides / Q000737:chemistry*; D003124:Colorimetry / Q000379:methods*; D015195:Drug Design; D005459:Fluorides / Q000737:chemistry*; D005782:Gels; D008958:Models, Molecular; D008968:Molecular Conformation; D009570:Nitriles / Q000737:chemistry*
chemical_list: D000577:Amides; D005782:Gels; D009570:Nitriles; D005459:Fluorides