SOLVENT AND ACIDITY DEPENDENCE OF THE ABSORPTION AND FLUORESCENCE OF COUMESTROL

@inproceedings{Wolfbeis1980SOLVENTAA,
  title={SOLVENT AND ACIDITY DEPENDENCE OF THE ABSORPTION AND FLUORESCENCE OF COUMESTROL},
  author={Otto S. Wolfbeis and Kurt Schaffner},
  year={1980}
}
— The UV absorption and fluorescence of the plant estrogen coumestrol (1) are markedly dependent on solvent and acidity. In neutral non-aqueous solvents, emission occurs from the uncharged first excited singlet state. In aqueous solutions of 1, five species—the neutral form, the mono- and dianions, and the mono- and dications—were found and characterized by their UV absorptions, fluorescence (including lifetimes and quantum yields), and pK's of the ground and excited singlet states. The… CONTINUE READING

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Estrogens, Progestins, and Their Antagonists

  • Hormones in Health and Disease
  • 1997
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