Vibrational spectroscopy in crystals of trans-cinnamic acid complexed with Europium under extreme conditions

Detalhes bibliográficos
Autor(a) principal: Josà Enedilton Medeiros Pereira
Data de Publicação: 2014
Tipo de documento: Dissertação
Idioma: por
Título da fonte: Biblioteca Digital de Teses e Dissertações da UFC
Texto Completo: http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=12323
Resumo: This work is focused on characterization of a polycrystalline sample of the coordination compound with ions Eu3+ using as a binder the trans-cinnamic acid , [Eu(cin)3]. The interest in coordination with lanthanide compounds is due to their large technological applications. The process of luminescence of coordination compounds containing lanthanide, also called antenna effect, has a main objective the use of new ligands with various applications, both in increasing the efficiency of energy receptors in the ultraviolet region and the development of biomarkers. In this work, to characterize the polycrystalline material, Raman spectroscopy was used to determine the vibrational behavior of the material at ambient temperature and pressure. It was also shown the behavior of the compound at low temperatures, in which variations in various vibrational modes were observed, indicating thus the occurrence of phase transition. Using a diamond anvil cell the material was studied by high hydrostatic pressure Raman spectroscopy. The purpose of this methodology was to map possible phase transitions and discover the occurrence of possible polymorphism. However, until the pressure reached in the experiments - about 5.2 GPa - it was found that the original phase remained stable. A discussion of the luminescence of the sample is also provided in this work.
id UFC_07a0fc1ad9ed0bb6dbfe9fae57ee51d9
oai_identifier_str oai:www.teses.ufc.br:8276
network_acronym_str UFC
network_name_str Biblioteca Digital de Teses e Dissertações da UFC
spelling info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisVibrational spectroscopy in crystals of trans-cinnamic acid complexed with Europium under extreme conditions Espectroscopia vibracional em cristais do Ãcido trans-cinÃmico complexado com eurÃpio sob condiÃÃes extremas2014-07-16Paulo de Tarso Cavalcante Freire2284693032502038603308Josà Enedilton Medeiros PereiraUniversidade Federal do CearÃPrograma de PÃs-GraduaÃÃo em FÃsicaUFCBREspectroscopia Raman Ãcido trans-cinÃmico Propriedades vibracionaisRaman spectroscopy Trans-cinnamic Ãcid Vibrational properties FISICA DA MATERIA CONDENSADAThis work is focused on characterization of a polycrystalline sample of the coordination compound with ions Eu3+ using as a binder the trans-cinnamic acid , [Eu(cin)3]. The interest in coordination with lanthanide compounds is due to their large technological applications. The process of luminescence of coordination compounds containing lanthanide, also called antenna effect, has a main objective the use of new ligands with various applications, both in increasing the efficiency of energy receptors in the ultraviolet region and the development of biomarkers. In this work, to characterize the polycrystalline material, Raman spectroscopy was used to determine the vibrational behavior of the material at ambient temperature and pressure. It was also shown the behavior of the compound at low temperatures, in which variations in various vibrational modes were observed, indicating thus the occurrence of phase transition. Using a diamond anvil cell the material was studied by high hydrostatic pressure Raman spectroscopy. The purpose of this methodology was to map possible phase transitions and discover the occurrence of possible polymorphism. However, until the pressure reached in the experiments - about 5.2 GPa - it was found that the original phase remained stable. A discussion of the luminescence of the sample is also provided in this work.O presente trabalho està focado na caracterizaÃÃo de uma amostra policristalina do composto de coordenaÃÃo com Ãons Eu3+ utilizando como ligante o Ãcido trans-cinÃmico, [Eu(cin)3]. O interesse em compostos de coordenaÃÃo com lantanÃdeos deve-se Ãs suas amplas aplicaÃÃes tecnolÃgicas. O processo de luminescÃncia dos compostos de coordena- ÃÃo contendo lantanÃdeo, tambÃm chamado de efeito antena, tem como principal objetivo o uso de novos ligantes com aplicaÃÃes diversas, tanto no aumento da eficiÃncia de re- ceptores de energia na regiÃo do ultravioleta quanto no desenvolvimento de marcadores biolÃgicos. Neste trabalho, para realizar a caracterizaÃÃo do material policristalino, foi utilizada a espectroscopia Raman, a fim de determinar o comportamento vibracional do material à temperatura e pressÃo ambiente. TambÃm foi verificado o comportamento do composto sob baixas temperaturas, no qual foram observadas variaÃÃes em vÃrios modos vibracionais, indicando, por conseguinte, a ocorrÃncia de transiÃÃo de fase. Utilizando uma cÃlula de pressÃo a extremos de diamante o material foi estudado a altas pressÃes hidrostÃticas atravÃs de espectroscopia Raman. O intuito desta metodologia era mapear possÃveis transiÃÃes de fase e descobrir a ocorrÃncia de eventual polimorfismo. Entretanto, atà a pressÃo atingida nos experimentos â cerca de 5,2 GPa â verificou-se que a fase ori- ginal permaneceu estÃvel. Uma discussÃo sobre a luminescÃncia da amostra tambÃm à fornecida neste trabalho.http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=12323application/pdfinfo:eu-repo/semantics/openAccessporreponame:Biblioteca Digital de Teses e Dissertações da UFCinstname:Universidade Federal do Cearáinstacron:UFC2019-01-21T11:25:39Zmail@mail.com -
dc.title.en.fl_str_mv Vibrational spectroscopy in crystals of trans-cinnamic acid complexed with Europium under extreme conditions
dc.title.alternative.pt.fl_str_mv Espectroscopia vibracional em cristais do Ãcido trans-cinÃmico complexado com eurÃpio sob condiÃÃes extremas
title Vibrational spectroscopy in crystals of trans-cinnamic acid complexed with Europium under extreme conditions
spellingShingle Vibrational spectroscopy in crystals of trans-cinnamic acid complexed with Europium under extreme conditions
Josà Enedilton Medeiros Pereira
Espectroscopia Raman
Ãcido trans-cinÃmico
Propriedades vibracionais
Raman spectroscopy
Trans-cinnamic Ãcid
Vibrational properties
FISICA DA MATERIA CONDENSADA
title_short Vibrational spectroscopy in crystals of trans-cinnamic acid complexed with Europium under extreme conditions
title_full Vibrational spectroscopy in crystals of trans-cinnamic acid complexed with Europium under extreme conditions
title_fullStr Vibrational spectroscopy in crystals of trans-cinnamic acid complexed with Europium under extreme conditions
title_full_unstemmed Vibrational spectroscopy in crystals of trans-cinnamic acid complexed with Europium under extreme conditions
title_sort Vibrational spectroscopy in crystals of trans-cinnamic acid complexed with Europium under extreme conditions
author Josà Enedilton Medeiros Pereira
author_facet Josà Enedilton Medeiros Pereira
author_role author
dc.contributor.advisor1.fl_str_mv Paulo de Tarso Cavalcante Freire
dc.contributor.advisor1ID.fl_str_mv 22846930325
dc.contributor.authorID.fl_str_mv 02038603308
dc.contributor.author.fl_str_mv Josà Enedilton Medeiros Pereira
contributor_str_mv Paulo de Tarso Cavalcante Freire
dc.subject.por.fl_str_mv Espectroscopia Raman
Ãcido trans-cinÃmico
Propriedades vibracionais
topic Espectroscopia Raman
Ãcido trans-cinÃmico
Propriedades vibracionais
Raman spectroscopy
Trans-cinnamic Ãcid
Vibrational properties
FISICA DA MATERIA CONDENSADA
dc.subject.eng.fl_str_mv Raman spectroscopy
Trans-cinnamic Ãcid
Vibrational properties
dc.subject.cnpq.fl_str_mv FISICA DA MATERIA CONDENSADA
dc.description.abstract.por.fl_txt_mv This work is focused on characterization of a polycrystalline sample of the coordination compound with ions Eu3+ using as a binder the trans-cinnamic acid , [Eu(cin)3]. The interest in coordination with lanthanide compounds is due to their large technological applications. The process of luminescence of coordination compounds containing lanthanide, also called antenna effect, has a main objective the use of new ligands with various applications, both in increasing the efficiency of energy receptors in the ultraviolet region and the development of biomarkers. In this work, to characterize the polycrystalline material, Raman spectroscopy was used to determine the vibrational behavior of the material at ambient temperature and pressure. It was also shown the behavior of the compound at low temperatures, in which variations in various vibrational modes were observed, indicating thus the occurrence of phase transition. Using a diamond anvil cell the material was studied by high hydrostatic pressure Raman spectroscopy. The purpose of this methodology was to map possible phase transitions and discover the occurrence of possible polymorphism. However, until the pressure reached in the experiments - about 5.2 GPa - it was found that the original phase remained stable. A discussion of the luminescence of the sample is also provided in this work.
O presente trabalho està focado na caracterizaÃÃo de uma amostra policristalina do composto de coordenaÃÃo com Ãons Eu3+ utilizando como ligante o Ãcido trans-cinÃmico, [Eu(cin)3]. O interesse em compostos de coordenaÃÃo com lantanÃdeos deve-se Ãs suas amplas aplicaÃÃes tecnolÃgicas. O processo de luminescÃncia dos compostos de coordena- ÃÃo contendo lantanÃdeo, tambÃm chamado de efeito antena, tem como principal objetivo o uso de novos ligantes com aplicaÃÃes diversas, tanto no aumento da eficiÃncia de re- ceptores de energia na regiÃo do ultravioleta quanto no desenvolvimento de marcadores biolÃgicos. Neste trabalho, para realizar a caracterizaÃÃo do material policristalino, foi utilizada a espectroscopia Raman, a fim de determinar o comportamento vibracional do material à temperatura e pressÃo ambiente. TambÃm foi verificado o comportamento do composto sob baixas temperaturas, no qual foram observadas variaÃÃes em vÃrios modos vibracionais, indicando, por conseguinte, a ocorrÃncia de transiÃÃo de fase. Utilizando uma cÃlula de pressÃo a extremos de diamante o material foi estudado a altas pressÃes hidrostÃticas atravÃs de espectroscopia Raman. O intuito desta metodologia era mapear possÃveis transiÃÃes de fase e descobrir a ocorrÃncia de eventual polimorfismo. Entretanto, atà a pressÃo atingida nos experimentos â cerca de 5,2 GPa â verificou-se que a fase ori- ginal permaneceu estÃvel. Uma discussÃo sobre a luminescÃncia da amostra tambÃm à fornecida neste trabalho.
description This work is focused on characterization of a polycrystalline sample of the coordination compound with ions Eu3+ using as a binder the trans-cinnamic acid , [Eu(cin)3]. The interest in coordination with lanthanide compounds is due to their large technological applications. The process of luminescence of coordination compounds containing lanthanide, also called antenna effect, has a main objective the use of new ligands with various applications, both in increasing the efficiency of energy receptors in the ultraviolet region and the development of biomarkers. In this work, to characterize the polycrystalline material, Raman spectroscopy was used to determine the vibrational behavior of the material at ambient temperature and pressure. It was also shown the behavior of the compound at low temperatures, in which variations in various vibrational modes were observed, indicating thus the occurrence of phase transition. Using a diamond anvil cell the material was studied by high hydrostatic pressure Raman spectroscopy. The purpose of this methodology was to map possible phase transitions and discover the occurrence of possible polymorphism. However, until the pressure reached in the experiments - about 5.2 GPa - it was found that the original phase remained stable. A discussion of the luminescence of the sample is also provided in this work.
publishDate 2014
dc.date.issued.fl_str_mv 2014-07-16
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/masterThesis
status_str publishedVersion
format masterThesis
dc.identifier.uri.fl_str_mv http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=12323
url http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=12323
dc.language.iso.fl_str_mv por
language por
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 Universidade Federal do CearÃ
dc.publisher.program.fl_str_mv Programa de PÃs-GraduaÃÃo em FÃsica
dc.publisher.initials.fl_str_mv UFC
dc.publisher.country.fl_str_mv BR
publisher.none.fl_str_mv Universidade Federal do CearÃ
dc.source.none.fl_str_mv reponame:Biblioteca Digital de Teses e Dissertações da UFC
instname:Universidade Federal do Ceará
instacron:UFC
reponame_str Biblioteca Digital de Teses e Dissertações da UFC
collection Biblioteca Digital de Teses e Dissertações da UFC
instname_str Universidade Federal do Ceará
instacron_str UFC
institution UFC
repository.name.fl_str_mv -
repository.mail.fl_str_mv mail@mail.com
_version_ 1643295192802918400

Registros relacionados