Steady state and transient study of 2-naphthol—diethylamine charge transfer complexes in polar and non-polar solvents

✍ Scribed by P.B. Bisht; H.B. Tripathi; D.D. Pant

• Publisher: Elsevier Science
• Year: 1991
• Tongue: English
• Weight: 711 KB
• Volume: 58
• Category: Article
• ISSN: 1010-6030
• DOI: 10.1016/1010-6030(91)87048-z

✦ Synopsis

Hydrogen bonded complexes of 2-naphthol-diethylamine were investigated in various polar and non-polar solvents. The ground state equilibrium constants and excited state Stern-Volmer quenching rates were calculated_ The excitation spectra and time-resolved emission spectra indicate that, in non-polar solvents, the emission of the ground state hydrogen bonded complex is red shifted relative to that of free 2-naphthol, whereas the encounter complex formed in the excited state exhibits no emission. However, in polar solvents, the usual excited state proton transfer reaction takes place producing a risetime in the fluorescence decay curves and a large red shift in the spectra.