An amine linker group modulates luminescent properties in a Rhenium(I) tricarbonyl complex. How can it be applied for ratiometric oxygen sensing?

Eliseo Valdés, Marjorie Cepeda-Plaza, Germán Günther, Andrés Vega, Rodrigo Palacios, María Lorena Gómez, Nancy Pizarro

Resultado de la investigación: Article

Resumen

The UV–Vis absorption spectrum of the rhenium(I) tricarbonyl complex [(NH2-phen)Re(CO)3Br] (ReNN-NH2Br, a deep-orange solid) in solution shows three bands located at 300, 370 and 445 nm. TD-DFT calculations and spectroscopic data indicate that the higher energy band corresponds to a ligand centered transition (LC), while the two lower energy bands have been ascribed to have major ILCT and MLCT character. Excitation at 370 nm leads to two emission bands centered at around 490 nm and 590 nm, which have different nature, 1ILCT and 3MLCT, respectively. Both show a low luminescent quantum yield, especially the lowest energy band. The emission quantum yields in argon-saturated solutions are largely increased, specially for the band at 590 nm. Our results demonstrate that adding the amino group has a non-innocent effect over the luminescent properties of the complex when is compared with those of [(phen)Re(CO)3Br] (ReNNBr). The capacity of these complexes to act as singlet oxygen sensitizers and their application as oxygen sensors were explored. Both complexes, ReNNBr and ReNN-NH2Br, were incorporated in silsesquioxane matrices and tested as ratiometric oxygen sensors using the intrinsic emission of the matrix as an emission internal reference signal. The SSO1-ReNN-NH2Br films was the most sensitive material for this application.

Idioma originalEnglish
Número de artículo107787
PublicaciónDyes and Pigments
Volumen172
DOI
EstadoPublished - 1 ene 2020

Huella dactilar

Rhenium
Band structure
Amines
Oxygen sensors
Quantum yield
Carbon Monoxide
Oxygen
Singlet Oxygen
Argon
Electron transitions
Discrete Fourier transforms
Absorption spectra
Ligands

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Process Chemistry and Technology

Citar esto

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title = "An amine linker group modulates luminescent properties in a Rhenium(I) tricarbonyl complex. How can it be applied for ratiometric oxygen sensing?",
abstract = "The UV–Vis absorption spectrum of the rhenium(I) tricarbonyl complex [(NH2-phen)Re(CO)3Br] (ReNN-NH2Br, a deep-orange solid) in solution shows three bands located at 300, 370 and 445 nm. TD-DFT calculations and spectroscopic data indicate that the higher energy band corresponds to a ligand centered transition (LC), while the two lower energy bands have been ascribed to have major ILCT and MLCT character. Excitation at 370 nm leads to two emission bands centered at around 490 nm and 590 nm, which have different nature, 1ILCT and 3MLCT, respectively. Both show a low luminescent quantum yield, especially the lowest energy band. The emission quantum yields in argon-saturated solutions are largely increased, specially for the band at 590 nm. Our results demonstrate that adding the amino group has a non-innocent effect over the luminescent properties of the complex when is compared with those of [(phen)Re(CO)3Br] (ReNNBr). The capacity of these complexes to act as singlet oxygen sensitizers and their application as oxygen sensors were explored. Both complexes, ReNNBr and ReNN-NH2Br, were incorporated in silsesquioxane matrices and tested as ratiometric oxygen sensors using the intrinsic emission of the matrix as an emission internal reference signal. The SSO1-ReNN-NH2Br films was the most sensitive material for this application.",
author = "Eliseo Vald{\'e}s and Marjorie Cepeda-Plaza and Germ{\'a}n G{\"u}nther and Andr{\'e}s Vega and Rodrigo Palacios and G{\'o}mez, {Mar{\'i}a Lorena} and Nancy Pizarro",
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An amine linker group modulates luminescent properties in a Rhenium(I) tricarbonyl complex. How can it be applied for ratiometric oxygen sensing? / Valdés, Eliseo; Cepeda-Plaza, Marjorie; Günther, Germán; Vega, Andrés; Palacios, Rodrigo; Gómez, María Lorena; Pizarro, Nancy.

En: Dyes and Pigments, Vol. 172, 107787, 01.01.2020.

Resultado de la investigación: Article

TY - JOUR

T1 - An amine linker group modulates luminescent properties in a Rhenium(I) tricarbonyl complex. How can it be applied for ratiometric oxygen sensing?

AU - Valdés, Eliseo

AU - Cepeda-Plaza, Marjorie

AU - Günther, Germán

AU - Vega, Andrés

AU - Palacios, Rodrigo

AU - Gómez, María Lorena

AU - Pizarro, Nancy

PY - 2020/1/1

Y1 - 2020/1/1

N2 - The UV–Vis absorption spectrum of the rhenium(I) tricarbonyl complex [(NH2-phen)Re(CO)3Br] (ReNN-NH2Br, a deep-orange solid) in solution shows three bands located at 300, 370 and 445 nm. TD-DFT calculations and spectroscopic data indicate that the higher energy band corresponds to a ligand centered transition (LC), while the two lower energy bands have been ascribed to have major ILCT and MLCT character. Excitation at 370 nm leads to two emission bands centered at around 490 nm and 590 nm, which have different nature, 1ILCT and 3MLCT, respectively. Both show a low luminescent quantum yield, especially the lowest energy band. The emission quantum yields in argon-saturated solutions are largely increased, specially for the band at 590 nm. Our results demonstrate that adding the amino group has a non-innocent effect over the luminescent properties of the complex when is compared with those of [(phen)Re(CO)3Br] (ReNNBr). The capacity of these complexes to act as singlet oxygen sensitizers and their application as oxygen sensors were explored. Both complexes, ReNNBr and ReNN-NH2Br, were incorporated in silsesquioxane matrices and tested as ratiometric oxygen sensors using the intrinsic emission of the matrix as an emission internal reference signal. The SSO1-ReNN-NH2Br films was the most sensitive material for this application.

AB - The UV–Vis absorption spectrum of the rhenium(I) tricarbonyl complex [(NH2-phen)Re(CO)3Br] (ReNN-NH2Br, a deep-orange solid) in solution shows three bands located at 300, 370 and 445 nm. TD-DFT calculations and spectroscopic data indicate that the higher energy band corresponds to a ligand centered transition (LC), while the two lower energy bands have been ascribed to have major ILCT and MLCT character. Excitation at 370 nm leads to two emission bands centered at around 490 nm and 590 nm, which have different nature, 1ILCT and 3MLCT, respectively. Both show a low luminescent quantum yield, especially the lowest energy band. The emission quantum yields in argon-saturated solutions are largely increased, specially for the band at 590 nm. Our results demonstrate that adding the amino group has a non-innocent effect over the luminescent properties of the complex when is compared with those of [(phen)Re(CO)3Br] (ReNNBr). The capacity of these complexes to act as singlet oxygen sensitizers and their application as oxygen sensors were explored. Both complexes, ReNNBr and ReNN-NH2Br, were incorporated in silsesquioxane matrices and tested as ratiometric oxygen sensors using the intrinsic emission of the matrix as an emission internal reference signal. The SSO1-ReNN-NH2Br films was the most sensitive material for this application.

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DO - 10.1016/j.dyepig.2019.107787

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