Optical (DRUV-VIS) and magnetic (EPR) behavior of synthetic melanins

Detalhes bibliográficos
Autor(a) principal: Santos,Júlio César Pereira dos
Data de Publicação: 2012
Outros Autores: Marino,Cláudia Eliana Bruno, Mangrich,Antonio Salvio, Rezende,Edivaltrys Inayve Pissinati de
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Materials research (São Carlos. Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392012000200007
Resumo: The properties of melanins prepared from L-dopa oxidation by both chemical and electrochemical methods are reported, searching for a material with more intense optical absorption in the visible region. The characterization of the samples have been done by cyclic voltammetry (CV), cronoamperometry (CA), Fourier transformed infrared spectroscopy (FTIR), electron paramagnetic resonance spectroscopy (EPR) and diffuse reflectance ultraviolet-visible spectroscopy (DRUV-VIS) techniques. The electrochemical method enhanced the organic free radical (spin) concentration and the absorption intensity in the visible region of the spectrum. The DRUV-VIS technique along with mathematical tools, such as the Kubelka-Munk remission function, were good options for the characterization of the final products.
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spelling Optical (DRUV-VIS) and magnetic (EPR) behavior of synthetic melaninsEPR spectroscopyKubelka-Munkoptical propertieselectrochemical techniquesThe properties of melanins prepared from L-dopa oxidation by both chemical and electrochemical methods are reported, searching for a material with more intense optical absorption in the visible region. The characterization of the samples have been done by cyclic voltammetry (CV), cronoamperometry (CA), Fourier transformed infrared spectroscopy (FTIR), electron paramagnetic resonance spectroscopy (EPR) and diffuse reflectance ultraviolet-visible spectroscopy (DRUV-VIS) techniques. The electrochemical method enhanced the organic free radical (spin) concentration and the absorption intensity in the visible region of the spectrum. The DRUV-VIS technique along with mathematical tools, such as the Kubelka-Munk remission function, were good options for the characterization of the final products.ABM, ABC, ABPol2012-04-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392012000200007Materials Research v.15 n.2 2012reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/S1516-14392012005000028info:eu-repo/semantics/openAccessSantos,Júlio César Pereira dosMarino,Cláudia Eliana BrunoMangrich,Antonio SalvioRezende,Edivaltrys Inayve Pissinati deeng2012-05-11T00:00:00Zoai:scielo:S1516-14392012000200007Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2012-05-11T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false
dc.title.none.fl_str_mv Optical (DRUV-VIS) and magnetic (EPR) behavior of synthetic melanins
title Optical (DRUV-VIS) and magnetic (EPR) behavior of synthetic melanins
spellingShingle Optical (DRUV-VIS) and magnetic (EPR) behavior of synthetic melanins
Santos,Júlio César Pereira dos
EPR spectroscopy
Kubelka-Munk
optical properties
electrochemical techniques
title_short Optical (DRUV-VIS) and magnetic (EPR) behavior of synthetic melanins
title_full Optical (DRUV-VIS) and magnetic (EPR) behavior of synthetic melanins
title_fullStr Optical (DRUV-VIS) and magnetic (EPR) behavior of synthetic melanins
title_full_unstemmed Optical (DRUV-VIS) and magnetic (EPR) behavior of synthetic melanins
title_sort Optical (DRUV-VIS) and magnetic (EPR) behavior of synthetic melanins
author Santos,Júlio César Pereira dos
author_facet Santos,Júlio César Pereira dos
Marino,Cláudia Eliana Bruno
Mangrich,Antonio Salvio
Rezende,Edivaltrys Inayve Pissinati de
author_role author
author2 Marino,Cláudia Eliana Bruno
Mangrich,Antonio Salvio
Rezende,Edivaltrys Inayve Pissinati de
author2_role author
author
author
dc.contributor.author.fl_str_mv Santos,Júlio César Pereira dos
Marino,Cláudia Eliana Bruno
Mangrich,Antonio Salvio
Rezende,Edivaltrys Inayve Pissinati de
dc.subject.por.fl_str_mv EPR spectroscopy
Kubelka-Munk
optical properties
electrochemical techniques
topic EPR spectroscopy
Kubelka-Munk
optical properties
electrochemical techniques
description The properties of melanins prepared from L-dopa oxidation by both chemical and electrochemical methods are reported, searching for a material with more intense optical absorption in the visible region. The characterization of the samples have been done by cyclic voltammetry (CV), cronoamperometry (CA), Fourier transformed infrared spectroscopy (FTIR), electron paramagnetic resonance spectroscopy (EPR) and diffuse reflectance ultraviolet-visible spectroscopy (DRUV-VIS) techniques. The electrochemical method enhanced the organic free radical (spin) concentration and the absorption intensity in the visible region of the spectrum. The DRUV-VIS technique along with mathematical tools, such as the Kubelka-Munk remission function, were good options for the characterization of the final products.
publishDate 2012
dc.date.none.fl_str_mv 2012-04-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392012000200007
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392012000200007
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1516-14392012005000028
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv ABM, ABC, ABPol
publisher.none.fl_str_mv ABM, ABC, ABPol
dc.source.none.fl_str_mv Materials Research v.15 n.2 2012
reponame:Materials research (São Carlos. Online)
instname:Universidade Federal de São Carlos (UFSCAR)
instacron:ABM ABC ABPOL
instname_str Universidade Federal de São Carlos (UFSCAR)
instacron_str ABM ABC ABPOL
institution ABM ABC ABPOL
reponame_str Materials research (São Carlos. Online)
collection Materials research (São Carlos. Online)
repository.name.fl_str_mv Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)
repository.mail.fl_str_mv dedz@power.ufscar.br
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