Study of optical properties of electropolymerized melanin films by photopyroelectric spectroscopy

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dc.contributor.authorAlbuquerque, José Eduardo de
dc.contributor.authorGiacomantonio, Clare
dc.contributor.authorWhite, Andrew G.
dc.contributor.authorMeredith, Paul
dc.date.accessioned2018-04-18T14:04:40Z
dc.date.available2018-04-18T14:04:40Z
dc.date.issued2005-11-12
dc.description.abstractPhotopyroelectric (PPE) spectroscopy, in the 350–1,075 nm wavelength range, was used to study the optical properties of electropolymerized melanin films on indium tin oxide (ITO) coated glass. The PPE intensity signal as a function of the wavelength λ, V n(λ) and its phase F n(λ) were independently measured. Using the PPE signal intensity and the thermal and optical properties of the pyroelectric detector, we were able to calculate the optical absorption coefficient β of melanin in the solid-state. We believe this to be the first such measurement of its kind on this material. Additionally, we found an optical gap in these melanin films at 1.70 eV.en
dc.formatpdfpt-BR
dc.identifier.issn14321017
dc.identifier.urihttps://doi.org/10.1007/s00249-005-0020-z
dc.identifier.urihttp://www.locus.ufv.br/handle/123456789/18789
dc.language.isoengpt-BR
dc.publisherEuropean Biophysics Journalpt-BR
dc.relation.ispartofseriesv. 35, Issue 3, p. 190–195, February 2006pt-BR
dc.rightsEBSApt-BR
dc.subjectMelaninpt-BR
dc.subjectPhotopyroelectric spectroscopypt-BR
dc.subjectOptical propertiespt-BR
dc.titleStudy of optical properties of electropolymerized melanin films by photopyroelectric spectroscopyen
dc.typeArtigopt-BR

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