Ruthenium (II) and Iron (II) Complexes bearing low band-gap thiophenic ligands as possible NLO switches

Detalhes bibliográficos
Autor(a) principal: Mendes, Paulo J. G.
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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spelling 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
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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)
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reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
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