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Highly sensitive and selective fluoride detection in water through fluorophore release from a metal-organic framework.
Hinterholzinger, Florian M; Rühle, Bastian; Wuttke, Stefan; Karaghiosoff, Konstantin; Bein, Thomas.
Afiliação
  • Hinterholzinger FM; Department of Chemistry and Center for NanoScience, University of Munich, Butenandtstraße 11E, Munich, Germany.
Sci Rep ; 3: 2562, 2013.
Article em En | MEDLINE | ID: mdl-24008779
The detection, differentiation and visualization of compounds such as gases, liquids or ions are key challenges for the design of selective optical chemosensors. Optical chemical sensors employ a transduction mechanism that converts a specific analyte recognition event into an optical signal. Here we report a novel concept for fluoride ion sensing where a porous crystalline framework serves as a host for a fluorescent reporter molecule. The detection is based on the decomposition of the host scaffold which induces the release of the fluorescent dye molecule. Specifically, the hybrid composite of the metal-organic framework NH2-MIL-101(Al) and fluorescein acting as reporter shows an exceptional turn-on fluorescence in aqueous fluoride-containing solutions. Using this novel strategy, the optical detection of fluoride is extremely sensitive and highly selective in the presence of many other anions.
Assuntos

Texto completo: 1 Base de dados: MEDLINE Assunto principal: Compostos Orgânicos / Espectrometria de Fluorescência / Poluentes Químicos da Água / Água / Corantes Fluorescentes / Fluoretos / Metais Tipo de estudo: Diagnostic_studies Idioma: En Ano de publicação: 2013 Tipo de documento: Article

Texto completo: 1 Base de dados: MEDLINE Assunto principal: Compostos Orgânicos / Espectrometria de Fluorescência / Poluentes Químicos da Água / Água / Corantes Fluorescentes / Fluoretos / Metais Tipo de estudo: Diagnostic_studies Idioma: En Ano de publicação: 2013 Tipo de documento: Article