INQUINOA   21218
INSTITUTO DE QUIMICA DEL NOROESTE
Unidad Ejecutora - UE
artículos
Título:
Novel Heteroleptic Ruthenium(II) Complexes with 2,2′- Bipyridines Containing a Series of Electron-Donor and Electron-Acceptor Substituents in 4,4′-Positions: Syntheses, Characterization, and Application as Sensitizers for ZnO Nanowire-Based Solar Cells
Autor/es:
PARELLA, TEODOR; LONGO, CLAUDIA; SALOMÓN, FERNANDO F.; MORÁN VIEYRA, FAUSTINO EDUARDO; CATTANEO, MAURICIO; VEGA, NADIA C.; BORSARELLI, CLAUDIO D.; KATZ, NÉSTOR E.
Revista:
ACS Omega
Editorial:
ACS Publication
Referencias:
Lugar: Washington DC; Año: 2020 p. 8097 - 8107
ISSN:
2470-1343
Resumen:
A novel series of complexes of the formula [Ru(4,4′-X2-bpy)2(Mebpy-CN)](PF6)2 (X = −CH3, −OCH3, −N(CH3)2;Mebpy-CN = 4-methyl-2,2′-bipyridine-4′-carbonitrile) have been synthesized and characterized by spectroscopic, electrochemical,and photophysical techniques. Inclusion of the electron-withdrawing substituent −CN at one bpy ligand and different electrondonor groups −X at the 4,4′-positions of the other two bpy ligands produce a fine tuning of physicochemical properties. Redoxpotentials, electronic absorption maxima, and emission maxima correlate well with Hammett?s σp parameters of X. Quantummechanical calculations are consistent with experimental data. All the complexes can be anchored through the nitrile moiety ofMebpy-CN over ZnO nanowires in dye-sensitized solar cells that exhibit an improvement of light to electrical energy conversionefficiency as the electronic asymmetry increases in the series.