Photochemical properties of a Re(I) polymer containing dppz in its structure : An interplay between dark and bright states of dppz
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 observ...
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Autores principales: | , , , , , , |
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Formato: | Articulo |
Lenguaje: | Inglés |
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2018
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Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/105765 https://www.sciencedirect.com/science/article/abs/pii/S1010603017313989 |
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id |
I19-R120-10915-105765 |
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institution |
Universidad Nacional de La Plata |
institution_str |
I-19 |
repository_str |
R-120 |
collection |
SEDICI (UNLP) |
language |
Inglés |
topic |
Ciencias Exactas TD-DFT AFM TEM Rhenium complexes Photochemistry Morphology |
spellingShingle |
Ciencias Exactas TD-DFT AFM TEM Rhenium complexes Photochemistry Morphology Saavedra Moncada, Alejandra Gutiérrez Pineda, Eduart Andrés Maisuls, Iván Ruiz, Gustavo Teodosio Lappin, Alexander G. Ferraudi, Guillermo J. Wolcan, Ezequiel Photochemical properties of a Re(I) polymer containing dppz in its structure : An interplay between dark and bright states of dppz |
topic_facet |
Ciencias Exactas TD-DFT AFM TEM Rhenium complexes Photochemistry Morphology |
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. |
format |
Articulo Articulo |
author |
Saavedra Moncada, Alejandra Gutiérrez Pineda, Eduart Andrés Maisuls, Iván Ruiz, Gustavo Teodosio Lappin, Alexander G. Ferraudi, Guillermo J. Wolcan, Ezequiel |
author_facet |
Saavedra Moncada, Alejandra Gutiérrez Pineda, Eduart Andrés Maisuls, Iván Ruiz, Gustavo Teodosio Lappin, Alexander G. Ferraudi, Guillermo J. Wolcan, Ezequiel |
author_sort |
Saavedra Moncada, Alejandra |
title |
Photochemical properties of a Re(I) polymer containing dppz in its structure : An interplay between dark and bright states of dppz |
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 |
publishDate |
2018 |
url |
http://sedici.unlp.edu.ar/handle/10915/105765 https://www.sciencedirect.com/science/article/abs/pii/S1010603017313989 |
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bdutipo_str |
Repositorios |
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1764820442545127425 |