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: Saavedra Moncada, Alejandra, Gutiérrez Pineda, Eduart Andrés, Maisuls, Iván, Ruiz, Gustavo Teodosio, Lappin, Alexander G., Ferraudi, Guillermo J., Wolcan, Ezequiel
Formato: Articulo
Lenguaje:Inglés
Publicado: 2018
Materias:
Ciencias Exactas
TD-DFT
AFM
TEM
Rhenium complexes
Photochemistry
Morphology
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/105765
https://www.sciencedirect.com/science/article/abs/pii/S1010603017313989
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-105765
record_format dspace
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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