Related Experiment Video
Updated: Aug 13, 2026

Synthesis of pH Dependent Pyrazole, Imidazole, and Isoindolone Dipyrrinone Fluorophores using a Claisen-Schmidt Condensation Approach
Published on: June 10, 2021
Highly sensitive sensory materials for fluoride ions based on the dithieno[3,2-b:2',3'-d]phosphole system
Toni Neumann1, Yvonne Dienes, Thomas Baumgartner
1Institute of Inorganic Chemistry, RWTH-Aachen University, Landoltweg 1, 52074 Aachen, Germany.
Abstract:
[structure: see text]. The newly developed functionalization of an unsubstituted dithieno[3,2-b:2',3'-d]phosphole at the 5,5'-positions gives access to bis(pinacoleboryl) species that can be utilized as sensory materials for fluoride ions. The fluoride-triggered response of the air- and moisture-stable boryl-functionalized dithienophosphole oxide manifests itself in the generation of a new fluorescence emission that can be detected at very low analyte concentrations (ppm) or even with the naked eye upon irradiation with UV light (366 nm).
Related Concept Videos
Photoluminescence: Applications
Fluorescence and Phosphorescence: Instrumentation
Variables Affecting Phosphorescence and Fluorescence
Other Nuclides: 31P, 19F, 15N NMR
While fluorine-19 and phosphorous-31 have high natural abundances (100%) and positive gyromagnetic ratios, nitrogen-15 has a low natural abundance and a negative gyromagnetic ratio. However, nitrogen-15 is still preferred over nitrogen-14 (which has a high...
Electrophilic Aromatic Substitution: Fluorination and Iodination of Benzene

