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EnglishWereportadetailedinvestigationoffluorescencepropertiesofsyntheticeumelaninpigmentin solution.Acompletesetoffluorescencespectrainthenear-UVandvisiblerangeisanalysed.Excitation spectraatafewselectedemissionenergiesarealsoinvestigated.Ourmeasurementssupportthe hypothesisthatfluorescenceineumelaninisrelatedtochemicallydistinctoligomericunitsthatcanbe selectivelyexcited.Fluorescenceduetolargeoligomersystemsisspectrallydifferentiatedfromthatdue to monomersandsmalloligomersystems.Fluorescenceexcitationmeasurementsshowthe contributionof5,6-dihydroxyndole-2-carboxylicacidand5,6-dihydroxyndolemonomerstothe emissionofsmall-sizeoligomers. & 2008ElsevierB.V.Allrightsreserved.
| Titolo: | Fluorescence spectroscopy of synthetic melanin in solution |
| Autori: | |
| Data di pubblicazione: | 2009 |
| Rivista: | |
| Abstract: | Wereportadetailedinvestigationoffluorescencepropertiesofsyntheticeumelaninpigmentin solution.Acompletesetoffluorescencespectrainthenear-UVandvisiblerangeisanalysed.Excitation spectraatafewselectedemissionenergiesarealsoinvestigated.Ourmeasurementssupportthe hypothesisthatfluorescenceineumelaninisrelatedtochemicallydistinctoligomericunitsthatcanbe selectivelyexcited.Fluorescenceduetolargeoligomersystemsisspectrallydifferentiatedfromthatdue to monomersandsmalloligomersystems.Fluorescenceexcitationmeasurementsshowthe contributionof5,6-dihydroxyndole-2-carboxylicacidand5,6-dihydroxyndolemonomerstothe emissionofsmall-sizeoligomers. & 2008ElsevierB.V.Allrightsreserved. |
| Handle: | http://hdl.handle.net/11369/15227 |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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