Chemistry of Heterocyclic Compounds

, Volume 27, Issue 9, pp 934–939 | Cite as

Spectral-luminescence properties and acid-base properties of luminophores obtained from 3-iodo-7-dialkylaminocoumarins

  • M. A. Kirpichënok
  • N. S. Patalakha
  • L. Yu. Fomina
  • I. I. Grandberg


The absorption and fluorescence spectra of the conjugate acids of 7-dialkylaminocoumarins were studied, and their pKaI, pKaII, and pKa* values were determined. It was established with the aid of PMR data that the primary protonation generally involves the nitrogen-containing substituent in the 3 or 4 position, while the secondary protonation involves the nitrogen atom in the 7 position.


Nitrogen Organic Chemistry Nitrogen Atom Fluorescence Spectrum Conjugate Acid 
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Copyright information

© Plenum Publishing Corporation 1992

Authors and Affiliations

  • M. A. Kirpichënok
    • 1
  • N. S. Patalakha
    • 1
  • L. Yu. Fomina
    • 1
  • I. I. Grandberg
    • 1
  1. 1.K. A. Timiryazev Moscow Agricultural AcademyMoscow

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