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RESOLUTION OF THE FLUORESCENCE EXCITATION SPECTRUM OF INDOLE INTO THE 1 L a AND 1 L b EXCITATION BANDS*

1977; Wiley; Volume: 25; Issue: 5 Linguagem: Inglês

10.1111/j.1751-1097.1977.tb09168.x

1751-1097

Bernard Valeur, Gregorio Weber,

Photochemistry and Electron Transfer Studies

Abstract— The fluorescence excitation spectrum and the excitation polarization spectrum of indole in propylene glycol were measured at — 58°C, after selecting by optical filters the emission originating from the 1 L a electronic level. From the analysis of these spectra, the excitation spectrum was resolved into the 1 L a and 1 L a excitation bands. A similar resolution of the excitation spectrum of tryptophan is given. This method can also be applied to the resolution of the emission spectrum in cases of dual emission.