Electron emission from photo-excited testosterone in water–ethanol solution
| Autor: | Ruth Maria Quint, Johannes Hartmann, Heike Schittl, Nikola Getoff |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
Photolysis
Radiation Ethanol Radiological and Ultrasound Technology Ultraviolet Rays Chemistry Photodissociation Biophysics Analytical chemistry Water food and beverages Electrons Electron Photochemistry Solvated electron Adduct Solutions Excited state Yield (chemistry) Testosterone Radiology Nuclear Medicine and imaging Irradiation Singlet state |
| Zdroj: | Journal of Photochemistry and Photobiology B: Biology. 94:179-182 |
| ISSN: | 1011-1344 |
| DOI: | 10.1016/j.jphotobiol.2008.11.009 |
| Popis: | Testosterone (TES; 4-androstene-17beta-ol-3-on) is found for the first time to eject electrons from its singlet excited state in water-ethanol solvent mixture. This ability was very recently also observed for 17beta-estradiol (17betaE2) and progesterone (PRG)/1/. With increasing TES-concentration, the yield of solvated electrons (e(s)(-)) is decreasing, because of "associate" formation. At higher absorbed UV-doses (lambda=254 nm) the e(s)(-) yield is passing a sharp maximum by formation of TES-ethanol adducts, which are able likewise to emit electrons when excited. At prolonged irradiation the resulting photolytic products of TES-ethanol adducts are also able to emit electrons. The capability of the hormones: 17betaE2, PRG and TES to eject electrons and the resulting metabolites, some of which can induce cancer, is discussed. |
| Databáze: | OpenAIRE |
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