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
.jpg)
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/105765
Ver los metadatos del registro completo
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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:UNLP2025-10-22T17:04:33Zoai: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:13292025-10-22 17:04:33.637SEDICI (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. |
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2018 |
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2018 |
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eng |
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eng |
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