Generation of Photocurrent by Visible-Light Irradiation of Conjugated Dawson Polyoxophosphovanadotungstate-Porphyrin Copolymers - CNRS - Centre national de la recherche scientifique Accéder directement au contenu
Article Dans Une Revue Chemistry - A European Journal Année : 2015

Generation of Photocurrent by Visible-Light Irradiation of Conjugated Dawson Polyoxophosphovanadotungstate-Porphyrin Copolymers

Résumé

Four hybrid polyoxometalate-porphyrin copolymer films were obtained by the electrooxidation of zinc octaethylporphyrin in the presence of four different Dawson-type polyoxometalates bearing two pyridyl groups (POM(py)(2)) with various spacers. The POM monomers were designed around 1,3,5-trisubstituted benzene rings. Two of the substituents of the benzene ring are linked to the pyridyl groups, and the third is connected to the POM subunit. The four monomers vary in the relative positions of the nitrogen atoms of the pyridine rings or in the distance from the carbonyl group. The monomers were fully characterized by H-1, P-31, and (CNMR)-C-13 spectroscopy, electrospray mass spectrometry, IR and UV/Vis spectroscopy, and electrochemistry. The copolymers were characterized by UV/Vis spectroscopy, X-ray photoelectron spectroscopy, electrochemistry, and AFM. Their photovoltaic performance under visible light irradiation was investigated by photocurrent transient measurements under visible illumination.

Dates et versions

hal-01238942 , version 1 (07-12-2015)

Identifiants

Citer

Iban Azcarate, Zhaohui Huo, Rana Farha, Michel Goldmann, Hualong Xu, et al.. Generation of Photocurrent by Visible-Light Irradiation of Conjugated Dawson Polyoxophosphovanadotungstate-Porphyrin Copolymers. Chemistry - A European Journal, 2015, 21 (22), pp.8271-8280. ⟨10.1002/chem.201406178⟩. ⟨hal-01238942⟩
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