Electron transfer reactivity and the catalytic activity of hemoglobin incorporated in dimethylaminoethyl methacrylate film

Detalhes bibliográficos
Autor(a) principal: Zhou,Hui
Data de Publicação: 2005
Outros Autores: Yang,Rongwu, Shang,Libin, Zhu,Zhiqiang, Li,Genxi
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Journal of the Brazilian Chemical Society (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532005000700017
Resumo: Hemoglobin (Hb) was incorporated in dimethylaminoethyl methacrylate (DMAEMA) to form a film and the film was modified on pyrolytic graphite (PG) electrode. UV-Vis spectra suggested that Hb in the film could keep its secondary structure. Consequently, a pair of stable, well-defined, and quasi-reversible cyclic voltammetric peaks could be observed with the formal potential at -206 mV (vs. saturated calomel electrode), characteristic of heme Fe(III)/Fe(II) redox couple of the protein. The apparent heterogeneous electron transfer rate constant and other electrochemical parameters were presented. The catalytic activity of Hb in DMAEMA films toward hydrogen peroxide was also investigated.
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spelling Electron transfer reactivity and the catalytic activity of hemoglobin incorporated in dimethylaminoethyl methacrylate filmdirect electrochemistryhemoglobindimethylaminoethyl methacrylateelectrocatalysisHemoglobin (Hb) was incorporated in dimethylaminoethyl methacrylate (DMAEMA) to form a film and the film was modified on pyrolytic graphite (PG) electrode. UV-Vis spectra suggested that Hb in the film could keep its secondary structure. Consequently, a pair of stable, well-defined, and quasi-reversible cyclic voltammetric peaks could be observed with the formal potential at -206 mV (vs. saturated calomel electrode), characteristic of heme Fe(III)/Fe(II) redox couple of the protein. The apparent heterogeneous electron transfer rate constant and other electrochemical parameters were presented. The catalytic activity of Hb in DMAEMA films toward hydrogen peroxide was also investigated.Sociedade Brasileira de Química2005-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532005000700017Journal of the Brazilian Chemical Society v.16 n.6a 2005reponame:Journal of the Brazilian Chemical Society (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0103-50532005000700017info:eu-repo/semantics/openAccessZhou,HuiYang,RongwuShang,LibinZhu,ZhiqiangLi,Genxieng2006-01-04T00:00:00Zoai:scielo:S0103-50532005000700017Revistahttp://jbcs.sbq.org.brONGhttps://old.scielo.br/oai/scielo-oai.php||office@jbcs.sbq.org.br1678-47900103-5053opendoar:2006-01-04T00:00Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv Electron transfer reactivity and the catalytic activity of hemoglobin incorporated in dimethylaminoethyl methacrylate film
title Electron transfer reactivity and the catalytic activity of hemoglobin incorporated in dimethylaminoethyl methacrylate film
spellingShingle Electron transfer reactivity and the catalytic activity of hemoglobin incorporated in dimethylaminoethyl methacrylate film
Zhou,Hui
direct electrochemistry
hemoglobin
dimethylaminoethyl methacrylate
electrocatalysis
title_short Electron transfer reactivity and the catalytic activity of hemoglobin incorporated in dimethylaminoethyl methacrylate film
title_full Electron transfer reactivity and the catalytic activity of hemoglobin incorporated in dimethylaminoethyl methacrylate film
title_fullStr Electron transfer reactivity and the catalytic activity of hemoglobin incorporated in dimethylaminoethyl methacrylate film
title_full_unstemmed Electron transfer reactivity and the catalytic activity of hemoglobin incorporated in dimethylaminoethyl methacrylate film
title_sort Electron transfer reactivity and the catalytic activity of hemoglobin incorporated in dimethylaminoethyl methacrylate film
author Zhou,Hui
author_facet Zhou,Hui
Yang,Rongwu
Shang,Libin
Zhu,Zhiqiang
Li,Genxi
author_role author
author2 Yang,Rongwu
Shang,Libin
Zhu,Zhiqiang
Li,Genxi
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Zhou,Hui
Yang,Rongwu
Shang,Libin
Zhu,Zhiqiang
Li,Genxi
dc.subject.por.fl_str_mv direct electrochemistry
hemoglobin
dimethylaminoethyl methacrylate
electrocatalysis
topic direct electrochemistry
hemoglobin
dimethylaminoethyl methacrylate
electrocatalysis
description Hemoglobin (Hb) was incorporated in dimethylaminoethyl methacrylate (DMAEMA) to form a film and the film was modified on pyrolytic graphite (PG) electrode. UV-Vis spectra suggested that Hb in the film could keep its secondary structure. Consequently, a pair of stable, well-defined, and quasi-reversible cyclic voltammetric peaks could be observed with the formal potential at -206 mV (vs. saturated calomel electrode), characteristic of heme Fe(III)/Fe(II) redox couple of the protein. The apparent heterogeneous electron transfer rate constant and other electrochemical parameters were presented. The catalytic activity of Hb in DMAEMA films toward hydrogen peroxide was also investigated.
publishDate 2005
dc.date.none.fl_str_mv 2005-12-01
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=S0103-50532005000700017
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532005000700017
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0103-50532005000700017
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 Sociedade Brasileira de Química
publisher.none.fl_str_mv Sociedade Brasileira de Química
dc.source.none.fl_str_mv Journal of the Brazilian Chemical Society v.16 n.6a 2005
reponame:Journal of the Brazilian Chemical Society (Online)
instname:Sociedade Brasileira de Química (SBQ)
instacron:SBQ
instname_str Sociedade Brasileira de Química (SBQ)
instacron_str SBQ
institution SBQ
reponame_str Journal of the Brazilian Chemical Society (Online)
collection Journal of the Brazilian Chemical Society (Online)
repository.name.fl_str_mv Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)
repository.mail.fl_str_mv ||office@jbcs.sbq.org.br
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