Pyroelectric effect and polarization instability in self-assembled diphenylalanine microtubes
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10773/20171 |
Resumo: | The natural ability of peptides and proteins to self-assemble into elongated fibrils is associated with several neurogenerative diseases. Diphenylalanine (FF) tubular structures that have the same structural motif as in Ab-amyloid peptide (involved in Alzheimer's disease) are shown to possess remarkable physical properties ranging from piezoelectricity to electrochemical activities. In this work, we also discover a significant pyroelectric activity and measure the temperature dependence of the pyroelectric coefficient in the temperature range of 20-100 degrees C. Pyroelectric activity decreases with temperature contrary to most ferroelectric materials and significant relaxation of pyrocurrent is observed on cooling after heating above 50 degrees C. This unusual behavior is assigned to the temperature-induced disorder of water molecules inside the nanochannels. Pyroelectric coefficient and current and voltage figures of merit are estimated and future applications of pyroelectric peptide nanostructures in biomedical applications are outlined. Published by AIP Publishing. |
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Pyroelectric effect and polarization instability in self-assembled diphenylalanine microtubesPEPTIDE NANOTUBESNANOSTRUCTURESTEMPERATURENANOWIRESENERGYWATERThe natural ability of peptides and proteins to self-assemble into elongated fibrils is associated with several neurogenerative diseases. Diphenylalanine (FF) tubular structures that have the same structural motif as in Ab-amyloid peptide (involved in Alzheimer's disease) are shown to possess remarkable physical properties ranging from piezoelectricity to electrochemical activities. In this work, we also discover a significant pyroelectric activity and measure the temperature dependence of the pyroelectric coefficient in the temperature range of 20-100 degrees C. Pyroelectric activity decreases with temperature contrary to most ferroelectric materials and significant relaxation of pyrocurrent is observed on cooling after heating above 50 degrees C. This unusual behavior is assigned to the temperature-induced disorder of water molecules inside the nanochannels. Pyroelectric coefficient and current and voltage figures of merit are estimated and future applications of pyroelectric peptide nanostructures in biomedical applications are outlined. Published by AIP Publishing.AMER INST PHYSICS2017-12-07T19:37:54Z2016-01-01T00:00:00Z2016info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10773/20171eng0003-695110.1063/1.4962652Esin, A.Baturin, I.Nikitin, T.Vasilev, S.Salehli, F.Shur, V. Ya.Kholkin, A. L.info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-17T03:50:45ZPortal AgregadorONG |
dc.title.none.fl_str_mv |
Pyroelectric effect and polarization instability in self-assembled diphenylalanine microtubes |
title |
Pyroelectric effect and polarization instability in self-assembled diphenylalanine microtubes |
spellingShingle |
Pyroelectric effect and polarization instability in self-assembled diphenylalanine microtubes Esin, A. PEPTIDE NANOTUBES NANOSTRUCTURES TEMPERATURE NANOWIRES ENERGY WATER |
title_short |
Pyroelectric effect and polarization instability in self-assembled diphenylalanine microtubes |
title_full |
Pyroelectric effect and polarization instability in self-assembled diphenylalanine microtubes |
title_fullStr |
Pyroelectric effect and polarization instability in self-assembled diphenylalanine microtubes |
title_full_unstemmed |
Pyroelectric effect and polarization instability in self-assembled diphenylalanine microtubes |
title_sort |
Pyroelectric effect and polarization instability in self-assembled diphenylalanine microtubes |
author |
Esin, A. |
author_facet |
Esin, A. Baturin, I. Nikitin, T. Vasilev, S. Salehli, F. Shur, V. Ya. Kholkin, A. L. |
author_role |
author |
author2 |
Baturin, I. Nikitin, T. Vasilev, S. Salehli, F. Shur, V. Ya. Kholkin, A. L. |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
Esin, A. Baturin, I. Nikitin, T. Vasilev, S. Salehli, F. Shur, V. Ya. Kholkin, A. L. |
dc.subject.por.fl_str_mv |
PEPTIDE NANOTUBES NANOSTRUCTURES TEMPERATURE NANOWIRES ENERGY WATER |
topic |
PEPTIDE NANOTUBES NANOSTRUCTURES TEMPERATURE NANOWIRES ENERGY WATER |
description |
The natural ability of peptides and proteins to self-assemble into elongated fibrils is associated with several neurogenerative diseases. Diphenylalanine (FF) tubular structures that have the same structural motif as in Ab-amyloid peptide (involved in Alzheimer's disease) are shown to possess remarkable physical properties ranging from piezoelectricity to electrochemical activities. In this work, we also discover a significant pyroelectric activity and measure the temperature dependence of the pyroelectric coefficient in the temperature range of 20-100 degrees C. Pyroelectric activity decreases with temperature contrary to most ferroelectric materials and significant relaxation of pyrocurrent is observed on cooling after heating above 50 degrees C. This unusual behavior is assigned to the temperature-induced disorder of water molecules inside the nanochannels. Pyroelectric coefficient and current and voltage figures of merit are estimated and future applications of pyroelectric peptide nanostructures in biomedical applications are outlined. Published by AIP Publishing. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-01-01T00:00:00Z 2016 2017-12-07T19:37:54Z |
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://hdl.handle.net/10773/20171 |
url |
http://hdl.handle.net/10773/20171 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
0003-6951 10.1063/1.4962652 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
AMER INST PHYSICS |
publisher.none.fl_str_mv |
AMER INST PHYSICS |
dc.source.none.fl_str_mv |
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) |
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repository.mail.fl_str_mv |
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1777303532272091136 |