Photocurrent Generation from Visible Light Irradiation of Covalent Polyoxometalate-Porphyrin Copolymers - Archive ouverte HAL
Article Dans Une Revue Electrochimica Acta Année : 2021

Photocurrent Generation from Visible Light Irradiation of Covalent Polyoxometalate-Porphyrin Copolymers

Résumé

Four hybrid polyoxometalate–porphyrin copolymer films were obtained by the electrooxidation of zinc-β-octaethylporphyrin (ZnOEP) or 5,15-ditolylporphyrin (H2T2P) in the presence of organosilyl functionalized Keggin-type POMs TBA3[PW11Si2O40C26H16N2] (abbreviated Py-PW11Si2-Py) and Dawson-type POMs TBA6[P2W17Si2O62C26H16N2] (abbreviated Py-P2W17Si2-Py) bearing two remote pyridyl groups. The electropolymerization process of the four copolymers was monitored by EQCM. The obtained copolymers were characterized by UV/Vis spectroscopy, X-ray photoelectron spectroscopy, electrochemistry, and AFM. Their impedance properties (EIS) were studied and their photovoltaic performances were also investigated by photocurrent transient measurements under visible light irradiation. These studies showed a correlation between impedance and photovoltaic performances, the films based on Dawson type POMs and Zn porphyrins giving the best results. This last system displayed one of the best photocurrent efficiency for a reported POM photosensitized hybrid.
Fichier principal
Vignette du fichier
Copolymer_07 12 2020I_Revision final_non marked_R2.pdf (2.42 Mo) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-03184377 , version 1 (29-03-2021)

Identifiants

Citer

Zhaohui Huo, Yiming Liang, Shu Yang, Dejin Zang, Rana Farha, et al.. Photocurrent Generation from Visible Light Irradiation of Covalent Polyoxometalate-Porphyrin Copolymers. Electrochimica Acta, 2021, 368, pp.137635. ⟨10.1016/j.electacta.2020.137635⟩. ⟨hal-03184377⟩
67 Consultations
82 Téléchargements

Altmetric

Partager

More