NEW ORGANOMETALLIC Fe(II) AND Ru(II) THIENO[3,2-b]THIOPHENE ALKYNYL COMPLEXES FOR NLO SWITCHING
Autor(a) principal: | |
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Data de Publicação: | 2012 |
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/10174/7215 |
Resumo: | The molecule-based switching of nonlinear optical (NLO) properties is of great interest in the growing fields of optoelectronics and photonics. The concept of molecular switching based on NLO properties is the possibility of achieving a change in the NLO response between two forms ('on' and 'off'), provided that the two molecular forms have a large difference in the magnitude of the corresponding hyperpolarizabilities. [1] In order to accomplish this effect, several kinds of stimuli can be applied, such as chemical, optical or electrochemical stimulus.[2] Organometallic compounds have considerable potential as molecules for NLO switching since the diversity of metal centers, oxidation states, ligand environment and coordination geometries allow to fine tuning the NLO response in order to achieve suitable switchable forms. In fact, organometallic compounds that have been studied for this purpose revealed motivating results.[3] In this study we present the synthesis of new iron(II) and ruthenium(II) thieno[3,2-b]thiophene acetylide complexes which were characterized by the usual spectroscopic techniques (NMR, Uv-Vis, FTIR) and cyclic voltammetry. A change in pH (protic switch) was used to induce an interchange between the alkynyl and vinylidene complexes for which different NLO responses are expected. The switching abilities were evaluated through Uv-Vis studies at different pH values where the difference in the color of the solutions (from blue to yellow), indicating an interchange between the two forms, was used to correlate the results with the predicted changes in the NLO properties. In general, all the complexes present reversible interchanging between the alkynyl and vinylidene forms in solution. This makes these compounds suitable for the further study of the molecular switching based on the NLO properties. |
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NEW ORGANOMETALLIC Fe(II) AND Ru(II) THIENO[3,2-b]THIOPHENE ALKYNYL COMPLEXES FOR NLO SWITCHINGOrganometallicNLOSwitchingThiopheneThe molecule-based switching of nonlinear optical (NLO) properties is of great interest in the growing fields of optoelectronics and photonics. The concept of molecular switching based on NLO properties is the possibility of achieving a change in the NLO response between two forms ('on' and 'off'), provided that the two molecular forms have a large difference in the magnitude of the corresponding hyperpolarizabilities. [1] In order to accomplish this effect, several kinds of stimuli can be applied, such as chemical, optical or electrochemical stimulus.[2] Organometallic compounds have considerable potential as molecules for NLO switching since the diversity of metal centers, oxidation states, ligand environment and coordination geometries allow to fine tuning the NLO response in order to achieve suitable switchable forms. In fact, organometallic compounds that have been studied for this purpose revealed motivating results.[3] In this study we present the synthesis of new iron(II) and ruthenium(II) thieno[3,2-b]thiophene acetylide complexes which were characterized by the usual spectroscopic techniques (NMR, Uv-Vis, FTIR) and cyclic voltammetry. A change in pH (protic switch) was used to induce an interchange between the alkynyl and vinylidene complexes for which different NLO responses are expected. The switching abilities were evaluated through Uv-Vis studies at different pH values where the difference in the color of the solutions (from blue to yellow), indicating an interchange between the two forms, was used to correlate the results with the predicted changes in the NLO properties. In general, all the complexes present reversible interchanging between the alkynyl and vinylidene forms in solution. This makes these compounds suitable for the further study of the molecular switching based on the NLO properties.XXV International Conference on Organometallic Chemistry2013-01-11T14:52:57Z2013-01-112012-09-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjecthttp://hdl.handle.net/10174/7215http://hdl.handle.net/10174/7215engPaulo J. G. Mendes, Ana M. Santos, M. H. Garcia, M. P. Robalo, Tiago Silva, “New Organomeetallic Fe(II) and Ru(II) Thieno[3,2-b]thiophene Alkynyl Complexes for NLO Switching”, XXV International Conference on Organometallic Chemistry (ICOMC), September 2-7, 2012, Lisbon, Portugal, CD-ROM of Abstracts PA.195http://cqe.ist.utl.pt/events/icomc25/naonaosimQUIpjgm@uevora.pt306Mendes, Paulo J.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:RCAAP2024-01-03T18:47:16Zoai:dspace.uevora.pt:10174/7215Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:01:48.643718Repositório 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 |
NEW ORGANOMETALLIC Fe(II) AND Ru(II) THIENO[3,2-b]THIOPHENE ALKYNYL COMPLEXES FOR NLO SWITCHING |
title |
NEW ORGANOMETALLIC Fe(II) AND Ru(II) THIENO[3,2-b]THIOPHENE ALKYNYL COMPLEXES FOR NLO SWITCHING |
spellingShingle |
NEW ORGANOMETALLIC Fe(II) AND Ru(II) THIENO[3,2-b]THIOPHENE ALKYNYL COMPLEXES FOR NLO SWITCHING Mendes, Paulo J. Organometallic NLO Switching Thiophene |
title_short |
NEW ORGANOMETALLIC Fe(II) AND Ru(II) THIENO[3,2-b]THIOPHENE ALKYNYL COMPLEXES FOR NLO SWITCHING |
title_full |
NEW ORGANOMETALLIC Fe(II) AND Ru(II) THIENO[3,2-b]THIOPHENE ALKYNYL COMPLEXES FOR NLO SWITCHING |
title_fullStr |
NEW ORGANOMETALLIC Fe(II) AND Ru(II) THIENO[3,2-b]THIOPHENE ALKYNYL COMPLEXES FOR NLO SWITCHING |
title_full_unstemmed |
NEW ORGANOMETALLIC Fe(II) AND Ru(II) THIENO[3,2-b]THIOPHENE ALKYNYL COMPLEXES FOR NLO SWITCHING |
title_sort |
NEW ORGANOMETALLIC Fe(II) AND Ru(II) THIENO[3,2-b]THIOPHENE ALKYNYL COMPLEXES FOR NLO SWITCHING |
author |
Mendes, Paulo J. |
author_facet |
Mendes, Paulo J. |
author_role |
author |
dc.contributor.author.fl_str_mv |
Mendes, Paulo J. |
dc.subject.por.fl_str_mv |
Organometallic NLO Switching Thiophene |
topic |
Organometallic NLO Switching Thiophene |
description |
The molecule-based switching of nonlinear optical (NLO) properties is of great interest in the growing fields of optoelectronics and photonics. The concept of molecular switching based on NLO properties is the possibility of achieving a change in the NLO response between two forms ('on' and 'off'), provided that the two molecular forms have a large difference in the magnitude of the corresponding hyperpolarizabilities. [1] In order to accomplish this effect, several kinds of stimuli can be applied, such as chemical, optical or electrochemical stimulus.[2] Organometallic compounds have considerable potential as molecules for NLO switching since the diversity of metal centers, oxidation states, ligand environment and coordination geometries allow to fine tuning the NLO response in order to achieve suitable switchable forms. In fact, organometallic compounds that have been studied for this purpose revealed motivating results.[3] In this study we present the synthesis of new iron(II) and ruthenium(II) thieno[3,2-b]thiophene acetylide complexes which were characterized by the usual spectroscopic techniques (NMR, Uv-Vis, FTIR) and cyclic voltammetry. A change in pH (protic switch) was used to induce an interchange between the alkynyl and vinylidene complexes for which different NLO responses are expected. The switching abilities were evaluated through Uv-Vis studies at different pH values where the difference in the color of the solutions (from blue to yellow), indicating an interchange between the two forms, was used to correlate the results with the predicted changes in the NLO properties. In general, all the complexes present reversible interchanging between the alkynyl and vinylidene forms in solution. This makes these compounds suitable for the further study of the molecular switching based on the NLO properties. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-09-01T00:00:00Z 2013-01-11T14:52:57Z 2013-01-11 |
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/10174/7215 http://hdl.handle.net/10174/7215 |
url |
http://hdl.handle.net/10174/7215 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Paulo J. G. Mendes, Ana M. Santos, M. H. Garcia, M. P. Robalo, Tiago Silva, “New Organomeetallic Fe(II) and Ru(II) Thieno[3,2-b]thiophene Alkynyl Complexes for NLO Switching”, XXV International Conference on Organometallic Chemistry (ICOMC), September 2-7, 2012, Lisbon, Portugal, CD-ROM of Abstracts PA.195 http://cqe.ist.utl.pt/events/icomc25/ 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 |
XXV International Conference on Organometallic Chemistry |
publisher.none.fl_str_mv |
XXV International Conference on Organometallic Chemistry |
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 |
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RCAAP |
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RCAAP |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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