Quenching of the fluorescence of quinoline derivatives by exciplex formation with heteroatom‐containing compounds

This is the authors' abstract. We don't add key points for this paper.

The efficient fluorescence of 2‐phenylquinoline compounds is readily quenched by heteroatom‐containing compounds such as amines and sulfides. The mechanism of quenching involves the formation of an exciplex between the quencher and the quinoline; in a few cases a new, red‐shifted emission from the exciplex was observed. The efficiency of quenching depends on the ionization potential of the quencher ‐ the compounds having low ionization potentials quench the fluorescence at a diffusion‐controlled rate.