The dual fluorescence nature of some N-monosubstituted salicylamides.

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概要

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• Dual fluorescence from <I>N</I>-methylsalicylamide (<B>1</B>) in alcoholic solutions was observed under excitation by 280 nm light, and was ascribed to two different molecular species: one with and the other without intramolecular proton transfer in the lowest excited singlet state. Some related compounds having two identical chromophores showed similar dual emission spectra with weak emission bands at shorter wavelengths. This fact was explained as being due to the intramolecular energy transfer between the two chromophores in the excited state. From the temperature dependence of the intensity ratio of the two emission bands for these compounds, the difference between the activation energies for the two emissive states was estimated.

• 公益社団法人 日本化学会の論文

著者

• KONDO Michio

  Central Research Laboratories, Sankyo Co.

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