Abstract
Room temperature electronic absorption and fluorescence spectra of harmol, harmalol and 2-hydroxycarbazole have been obtained in concentrated aqueous potassium hydroxide solutions. The appearance of a new fluorescence band for all these compounds in media of H- greater than 16, has been ascribed to the emission of excited dianions formed by deprotonation. Acidity constants have been estimated from the Föster-Weller method.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Carbazoles / analysis*
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Harmaline / analogs & derivatives*
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Harmaline / analysis
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Harmine / analogs & derivatives*
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Harmine / analysis
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Hydrogen-Ion Concentration
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Hydroxides
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Potassium
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Potassium Compounds*
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Solutions
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Spectrometry, Fluorescence
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Spectrophotometry, Ultraviolet
Substances
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Carbazoles
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Hydroxides
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Potassium Compounds
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Solutions
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harmalol
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harmol
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Harmine
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2-hydroxycarbazole
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Harmaline
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Potassium
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potassium hydroxide