Ion Transfer Through DPPC Monolayers

Detalhes bibliográficos
Autor(a) principal: Santos,H.A.
Data de Publicação: 2005
Outros Autores: Pereira,C. M., Silva,F.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042005000200004
Resumo: The transfer of acetylcholine cation through a monolayer of a lipid, dipalmitoylphosphatidylcholine, formed at a polarized water | 1,2-dichloroethane interface has been studied using electrochemical impedance spectroscopy. The ion transfer process was characterized at different levels of interfacial coverage. From measurement of the cyclic voltammograms and double layer capacitance it was found that cation transfer through dipalmitoylphosphatidylcholine monolayers was cation and phospholipid concentration dependent. An increase on current intensity and capacitance values was observed at more positive potentials due to the transfer of acetylcholine across the interface in the absence or presence of lipid in the organic phase. The thermodynamic and kinetic parameters were also accessed from electrochemical impedance measurements.
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spelling Ion Transfer Through DPPC Monolayersion transferacetylcholinemonolayerphospholipidsDPPCimpedance spectroscopyThe transfer of acetylcholine cation through a monolayer of a lipid, dipalmitoylphosphatidylcholine, formed at a polarized water | 1,2-dichloroethane interface has been studied using electrochemical impedance spectroscopy. The ion transfer process was characterized at different levels of interfacial coverage. From measurement of the cyclic voltammograms and double layer capacitance it was found that cation transfer through dipalmitoylphosphatidylcholine monolayers was cation and phospholipid concentration dependent. An increase on current intensity and capacitance values was observed at more positive potentials due to the transfer of acetylcholine across the interface in the absence or presence of lipid in the organic phase. The thermodynamic and kinetic parameters were also accessed from electrochemical impedance measurements.Sociedade Portuguesa de Electroquímica2005-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articletext/htmlhttp://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042005000200004Portugaliae Electrochimica Acta v.23 n.2 2005reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAPenghttp://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042005000200004Santos,H.A.Pereira,C. M.Silva,F.info:eu-repo/semantics/openAccess2024-02-06T17:06:46Zoai:scielo:S0872-19042005000200004Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T02:19:59.186482Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Ion Transfer Through DPPC Monolayers
title Ion Transfer Through DPPC Monolayers
spellingShingle Ion Transfer Through DPPC Monolayers
Santos,H.A.
ion transfer
acetylcholine
monolayer
phospholipids
DPPC
impedance spectroscopy
title_short Ion Transfer Through DPPC Monolayers
title_full Ion Transfer Through DPPC Monolayers
title_fullStr Ion Transfer Through DPPC Monolayers
title_full_unstemmed Ion Transfer Through DPPC Monolayers
title_sort Ion Transfer Through DPPC Monolayers
author Santos,H.A.
author_facet Santos,H.A.
Pereira,C. M.
Silva,F.
author_role author
author2 Pereira,C. M.
Silva,F.
author2_role author
author
dc.contributor.author.fl_str_mv Santos,H.A.
Pereira,C. M.
Silva,F.
dc.subject.por.fl_str_mv ion transfer
acetylcholine
monolayer
phospholipids
DPPC
impedance spectroscopy
topic ion transfer
acetylcholine
monolayer
phospholipids
DPPC
impedance spectroscopy
description The transfer of acetylcholine cation through a monolayer of a lipid, dipalmitoylphosphatidylcholine, formed at a polarized water | 1,2-dichloroethane interface has been studied using electrochemical impedance spectroscopy. The ion transfer process was characterized at different levels of interfacial coverage. From measurement of the cyclic voltammograms and double layer capacitance it was found that cation transfer through dipalmitoylphosphatidylcholine monolayers was cation and phospholipid concentration dependent. An increase on current intensity and capacitance values was observed at more positive potentials due to the transfer of acetylcholine across the interface in the absence or presence of lipid in the organic phase. The thermodynamic and kinetic parameters were also accessed from electrochemical impedance measurements.
publishDate 2005
dc.date.none.fl_str_mv 2005-01-01
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042005000200004
url http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042005000200004
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042005000200004
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 Portuguesa de Electroquímica
publisher.none.fl_str_mv Sociedade Portuguesa de Electroquímica
dc.source.none.fl_str_mv Portugaliae Electrochimica Acta v.23 n.2 2005
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv
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