Ruthenium (II) and Iron (II) Complexes bearing low band-gap thiophenic ligands as possible NLO switches
Autor(a) principal: | |
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Data de Publicação: | 2010 |
Tipo de documento: | Artigo de conferência |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10174/5065 |
Resumo: | Over the past decade, there was growth of interest in discovering new conducting molecules due to their potential applications in electrochromic devices, sensors, OLED's and more recently molecular switches. Non-Linear Optics (NLO) phenomenons, namely Second-Harmonic Generation (SHG), is one of the recently topics in molecular switching [1]. In this case, a molecule possessing high hyperpolarizability (β) can be electrochemically changed in order to reduce drastically its β value and therefore act as a switch, upon a redox process. Monocyclopentadienyliron (II) and ruthenium (II) complexes, combined with thiophene ligands possessing nitrile or acetylide linkages are known to have enhanced β values and have been widely studied for NLO [2]. Regarding the switching properties, oxidation in the transition metal, from M (II) to M (III) (M=Fe, Ru), can drastically reduce the NLO properties of these molecules and therefore it provides a way to electrochemically switch from an “on” form to an “off” form. In this communication, monocyclopentadienyliron (II) and ruthenium (II) complexes bearing thiophene ligands (Figure 1) with low band-gaps will be electrochemically tested as possible molecules for NLO switching. The electrochemical results will be correlated with spectroscopic data and the NLO properties predicted by DFT calculations, in order to anticipate the potentialities of the new compounds as molecular switches. |
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Ruthenium (II) and Iron (II) Complexes bearing low band-gap thiophenic ligands as possible NLO switchesCyclic VoltammetryNLOMolecular switchesOver the past decade, there was growth of interest in discovering new conducting molecules due to their potential applications in electrochromic devices, sensors, OLED's and more recently molecular switches. Non-Linear Optics (NLO) phenomenons, namely Second-Harmonic Generation (SHG), is one of the recently topics in molecular switching [1]. In this case, a molecule possessing high hyperpolarizability (β) can be electrochemically changed in order to reduce drastically its β value and therefore act as a switch, upon a redox process. Monocyclopentadienyliron (II) and ruthenium (II) complexes, combined with thiophene ligands possessing nitrile or acetylide linkages are known to have enhanced β values and have been widely studied for NLO [2]. Regarding the switching properties, oxidation in the transition metal, from M (II) to M (III) (M=Fe, Ru), can drastically reduce the NLO properties of these molecules and therefore it provides a way to electrochemically switch from an “on” form to an “off” form. In this communication, monocyclopentadienyliron (II) and ruthenium (II) complexes bearing thiophene ligands (Figure 1) with low band-gaps will be electrochemically tested as possible molecules for NLO switching. The electrochemical results will be correlated with spectroscopic data and the NLO properties predicted by DFT calculations, in order to anticipate the potentialities of the new compounds as molecular switches.Portugaliae Electrochimica Acta2012-03-27T12:03:15Z2012-03-272010-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjecthttp://hdl.handle.net/10174/5065http://hdl.handle.net/10174/5065engXII Iberic Meeting of Electrochemistry & XVI Meeting of the Portuguese Electrochemical Society, Lisbon, Portugal, 8-11 Sep 2010, Book of Abstracts P105http://cqe.ist.utl.pt/events/ime12/program.phpnaonaosimQUIpjgm@uevora.pt306Mendes, Paulo J. G.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:RCAAP2024-01-03T18:43:24Zoai:dspace.uevora.pt:10174/5065Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:00:07.390897Repositório 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 |
Ruthenium (II) and Iron (II) Complexes bearing low band-gap thiophenic ligands as possible NLO switches |
title |
Ruthenium (II) and Iron (II) Complexes bearing low band-gap thiophenic ligands as possible NLO switches |
spellingShingle |
Ruthenium (II) and Iron (II) Complexes bearing low band-gap thiophenic ligands as possible NLO switches Mendes, Paulo J. G. Cyclic Voltammetry NLO Molecular switches |
title_short |
Ruthenium (II) and Iron (II) Complexes bearing low band-gap thiophenic ligands as possible NLO switches |
title_full |
Ruthenium (II) and Iron (II) Complexes bearing low band-gap thiophenic ligands as possible NLO switches |
title_fullStr |
Ruthenium (II) and Iron (II) Complexes bearing low band-gap thiophenic ligands as possible NLO switches |
title_full_unstemmed |
Ruthenium (II) and Iron (II) Complexes bearing low band-gap thiophenic ligands as possible NLO switches |
title_sort |
Ruthenium (II) and Iron (II) Complexes bearing low band-gap thiophenic ligands as possible NLO switches |
author |
Mendes, Paulo J. G. |
author_facet |
Mendes, Paulo J. G. |
author_role |
author |
dc.contributor.author.fl_str_mv |
Mendes, Paulo J. G. |
dc.subject.por.fl_str_mv |
Cyclic Voltammetry NLO Molecular switches |
topic |
Cyclic Voltammetry NLO Molecular switches |
description |
Over the past decade, there was growth of interest in discovering new conducting molecules due to their potential applications in electrochromic devices, sensors, OLED's and more recently molecular switches. Non-Linear Optics (NLO) phenomenons, namely Second-Harmonic Generation (SHG), is one of the recently topics in molecular switching [1]. In this case, a molecule possessing high hyperpolarizability (β) can be electrochemically changed in order to reduce drastically its β value and therefore act as a switch, upon a redox process. Monocyclopentadienyliron (II) and ruthenium (II) complexes, combined with thiophene ligands possessing nitrile or acetylide linkages are known to have enhanced β values and have been widely studied for NLO [2]. Regarding the switching properties, oxidation in the transition metal, from M (II) to M (III) (M=Fe, Ru), can drastically reduce the NLO properties of these molecules and therefore it provides a way to electrochemically switch from an “on” form to an “off” form. In this communication, monocyclopentadienyliron (II) and ruthenium (II) complexes bearing thiophene ligands (Figure 1) with low band-gaps will be electrochemically tested as possible molecules for NLO switching. The electrochemical results will be correlated with spectroscopic data and the NLO properties predicted by DFT calculations, in order to anticipate the potentialities of the new compounds as molecular switches. |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-01-01T00:00:00Z 2012-03-27T12:03:15Z 2012-03-27 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/conferenceObject |
format |
conferenceObject |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10174/5065 http://hdl.handle.net/10174/5065 |
url |
http://hdl.handle.net/10174/5065 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
XII Iberic Meeting of Electrochemistry & XVI Meeting of the Portuguese Electrochemical Society, Lisbon, Portugal, 8-11 Sep 2010, Book of Abstracts P105 http://cqe.ist.utl.pt/events/ime12/program.php nao nao sim QUI pjgm@uevora.pt 306 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Portugaliae Electrochimica Acta |
publisher.none.fl_str_mv |
Portugaliae Electrochimica Acta |
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 |
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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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1799136483846651904 |