Photochemical properties of a Re(I) polymer containing dppz in its structure : An interplay between dark and bright states of dppz

Autores
Saavedra Moncada, Alejandra; Gutiérrez Pineda, Eduart Andrés; Maisuls, Iván; Ruiz, Gustavo Teodosio; Lappin, Alexander G.; Ferraudi, Guillermo J.; Wolcan, Ezequiel
Año de publicación
2018
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
A new polymer, P4VP-Re(dppz), based on the poly-4-vinylpyridine structure containing Re(CO)3(dppz)⁺ pendants was synthesized. Multiple morphologies of P4VP-Re(dppz), such as vesicles, spherical nanoaggregates, large vesicle compounds, rings and pyramidal structures were observed by AFM and TEM in cast films of P4VP-Re(dppz) in solvents of different polarity and solvent/acid mixtures. Several conformations of a model monomer of P4VP-Re(dppz) were studied by TD-DFT to ascertain the effect of protonation over the molecular structure as well as over the absorption spectroscopy of P4VP-Re(dppz). P4VP-Re(dppz) excited states and their redox reactivity towards the sacrificial reductant TEOA were studied by flash photolysis experiments either in DMF and in DMF/HClO4. Those experiments were compared to the ones derived from thermal reactions of P4VP-Re(dppz) with solvated electrons in pulse radiolysis experiments. All the photophysical and photochemical properties studied were rationalized in terms of an interplay between 3IL(ππ*), 3MLCT(phz) and the 3MLCT(phen) states.
Facultad de Ciencias Exactas
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas
Facultad de Ingeniería
Materia
Ciencias Exactas
TD-DFT
AFM
TEM
Rhenium complexes
Photochemistry
Morphology
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/105765

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network_name_str SEDICI (UNLP)
spelling Photochemical properties of a Re(I) polymer containing dppz in its structure : An interplay between dark and bright states of dppzSaavedra Moncada, AlejandraGutiérrez Pineda, Eduart AndrésMaisuls, IvánRuiz, Gustavo TeodosioLappin, Alexander G.Ferraudi, Guillermo J.Wolcan, EzequielCiencias ExactasTD-DFTAFMTEMRhenium complexesPhotochemistryMorphologyA new polymer, P4VP-Re(dppz), based on the poly-4-vinylpyridine structure containing Re(CO)<sub>3</sub>(dppz)⁺ pendants was synthesized. Multiple morphologies of P4VP-Re(dppz), such as vesicles, spherical nanoaggregates, large vesicle compounds, rings and pyramidal structures were observed by AFM and TEM in cast films of P4VP-Re(dppz) in solvents of different polarity and solvent/acid mixtures. Several conformations of a model monomer of P4VP-Re(dppz) were studied by TD-DFT to ascertain the effect of protonation over the molecular structure as well as over the absorption spectroscopy of P4VP-Re(dppz). P4VP-Re(dppz) excited states and their redox reactivity towards the sacrificial reductant TEOA were studied by flash photolysis experiments either in DMF and in DMF/HClO<sub>4</sub>. Those experiments were compared to the ones derived from thermal reactions of P4VP-Re(dppz) with solvated electrons in pulse radiolysis experiments. All the photophysical and photochemical properties studied were rationalized in terms of an interplay between <sup>3</sup>IL(ππ*), <sup>3</sup>MLCT(phz) and the 3MLCT(phen) states.Facultad de Ciencias ExactasInstituto de Investigaciones Fisicoquímicas Teóricas y AplicadasFacultad de Ingeniería2018info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf86-100http://sedici.unlp.edu.ar/handle/10915/105765enginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S1010603017313989info:eu-repo/semantics/altIdentifier/issn/1010-6030info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jphotochem.2017.11.007info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:23:41Zoai:sedici.unlp.edu.ar:10915/105765Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:23:42.189SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Photochemical properties of a Re(I) polymer containing dppz in its structure : An interplay between dark and bright states of dppz
title Photochemical properties of a Re(I) polymer containing dppz in its structure : An interplay between dark and bright states of dppz
spellingShingle Photochemical properties of a Re(I) polymer containing dppz in its structure : An interplay between dark and bright states of dppz
Saavedra Moncada, Alejandra
Ciencias Exactas
TD-DFT
AFM
TEM
Rhenium complexes
Photochemistry
Morphology
title_short Photochemical properties of a Re(I) polymer containing dppz in its structure : An interplay between dark and bright states of dppz
title_full Photochemical properties of a Re(I) polymer containing dppz in its structure : An interplay between dark and bright states of dppz
title_fullStr Photochemical properties of a Re(I) polymer containing dppz in its structure : An interplay between dark and bright states of dppz
title_full_unstemmed Photochemical properties of a Re(I) polymer containing dppz in its structure : An interplay between dark and bright states of dppz
title_sort Photochemical properties of a Re(I) polymer containing dppz in its structure : An interplay between dark and bright states of dppz
dc.creator.none.fl_str_mv Saavedra Moncada, Alejandra
Gutiérrez Pineda, Eduart Andrés
Maisuls, Iván
Ruiz, Gustavo Teodosio
Lappin, Alexander G.
Ferraudi, Guillermo J.
Wolcan, Ezequiel
author Saavedra Moncada, Alejandra
author_facet Saavedra Moncada, Alejandra
Gutiérrez Pineda, Eduart Andrés
Maisuls, Iván
Ruiz, Gustavo Teodosio
Lappin, Alexander G.
Ferraudi, Guillermo J.
Wolcan, Ezequiel
author_role author
author2 Gutiérrez Pineda, Eduart Andrés
Maisuls, Iván
Ruiz, Gustavo Teodosio
Lappin, Alexander G.
Ferraudi, Guillermo J.
Wolcan, Ezequiel
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Ciencias Exactas
TD-DFT
AFM
TEM
Rhenium complexes
Photochemistry
Morphology
topic Ciencias Exactas
TD-DFT
AFM
TEM
Rhenium complexes
Photochemistry
Morphology
dc.description.none.fl_txt_mv A new polymer, P4VP-Re(dppz), based on the poly-4-vinylpyridine structure containing Re(CO)<sub>3</sub>(dppz)⁺ pendants was synthesized. Multiple morphologies of P4VP-Re(dppz), such as vesicles, spherical nanoaggregates, large vesicle compounds, rings and pyramidal structures were observed by AFM and TEM in cast films of P4VP-Re(dppz) in solvents of different polarity and solvent/acid mixtures. Several conformations of a model monomer of P4VP-Re(dppz) were studied by TD-DFT to ascertain the effect of protonation over the molecular structure as well as over the absorption spectroscopy of P4VP-Re(dppz). P4VP-Re(dppz) excited states and their redox reactivity towards the sacrificial reductant TEOA were studied by flash photolysis experiments either in DMF and in DMF/HClO<sub>4</sub>. Those experiments were compared to the ones derived from thermal reactions of P4VP-Re(dppz) with solvated electrons in pulse radiolysis experiments. All the photophysical and photochemical properties studied were rationalized in terms of an interplay between <sup>3</sup>IL(ππ*), <sup>3</sup>MLCT(phz) and the 3MLCT(phen) states.
Facultad de Ciencias Exactas
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas
Facultad de Ingeniería
description A new polymer, P4VP-Re(dppz), based on the poly-4-vinylpyridine structure containing Re(CO)<sub>3</sub>(dppz)⁺ pendants was synthesized. Multiple morphologies of P4VP-Re(dppz), such as vesicles, spherical nanoaggregates, large vesicle compounds, rings and pyramidal structures were observed by AFM and TEM in cast films of P4VP-Re(dppz) in solvents of different polarity and solvent/acid mixtures. Several conformations of a model monomer of P4VP-Re(dppz) were studied by TD-DFT to ascertain the effect of protonation over the molecular structure as well as over the absorption spectroscopy of P4VP-Re(dppz). P4VP-Re(dppz) excited states and their redox reactivity towards the sacrificial reductant TEOA were studied by flash photolysis experiments either in DMF and in DMF/HClO<sub>4</sub>. Those experiments were compared to the ones derived from thermal reactions of P4VP-Re(dppz) with solvated electrons in pulse radiolysis experiments. All the photophysical and photochemical properties studied were rationalized in terms of an interplay between <sup>3</sup>IL(ππ*), <sup>3</sup>MLCT(phz) and the 3MLCT(phen) states.
publishDate 2018
dc.date.none.fl_str_mv 2018
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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info:ar-repo/semantics/articulo
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status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/105765
url http://sedici.unlp.edu.ar/handle/10915/105765
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S1010603017313989
info:eu-repo/semantics/altIdentifier/issn/1010-6030
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jphotochem.2017.11.007
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
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