Coordination of the tetrakis-pyridyl-porphyrin to the ferri-11-tungstophosphate. Electrocatalytic activity of the complex immobilized on a glassy carbon electrode

Gurban, Lucian; Tézé, A.; Hervé, Guy

doi:10.1016/s1387-1609(98)80177-1

Cited by 2 publications

(3 citation statements)

References 13 publications

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“…During the course of our studies [39][40][41][42], the preparation of compounds with the tetracationic 5,10,15,20-tetrakis(1-benzyl-4-pyridinio)porphyrin and the anion [SiW 12 O 40 ] 4− was reported [10]. Also, modified glassy carbon electrodes with metalloporphyrins and Keggin anions have been devised and studied to be used in the electrocatalytic reduction of dioxygen [10,[43][44][45].…”

Section: Introductionmentioning

confidence: 99%

Association of Keggin-type anions with cationic meso-substituted porphyrins: synthesis, characterization and oxidative catalytic studies

Santos

Rebelo

Balula

et al. 2005

Journal of Molecular Catalysis A: Chemical

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Section: Introductionmentioning

confidence: 99%

Association of Keggin-type anions with cationic meso-substituted porphyrins: synthesis, characterization and oxidative catalytic studies

Santos

Rebelo

Balula

et al. 2005

Journal of Molecular Catalysis A: Chemical

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“…The reasoning is done on the redox potential of the separate compounds because it has been shown that they are slightly shifted in the electrostatic complexes. 16,18,19,35 They are summarized in Scheme 1.…”

Section: Photoreduction Of Silwer Ions By the Porphyrin-pom Complexesmentioning

confidence: 99%

“…[14][15][16][17] Moreover, complexes with porphyrins, an usual chromophore, have been realized. Most publications report associations between metalloporphyrins and POM by coordination 18,19 or by covalence. 19,20 However, only a few studies describe the formation of electrostatic porphyrin-POM complexes.…”

Section: Introductionmentioning

confidence: 99%

Photocatalysis with Polyoxometalates Associated to Porphyrins under Visible Light: An Application of Charge Transfer in Electrostatic Complexes

2010

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Absorption spectrum of derived Dawson sandwich polyoxometalates (POM) [M(4)(H(2)O)(2)(P(2)W(15)O(56))(2)](n-) with n = 16 for M = Zn(II), Ni(II), and n = 12 for M = Fe(III) have been extended in the visible range forming electrostatic complexes with a chromophore, the zinc tetracationic porphyrin [ZnTMePyP](4+). Formation of such complexes was followed by steady-state absorption and luminescence spectroscopies. The electrostatic complexation gives in all cases a strong, neutral, and nonluminescent complex. A charge transfer between the two units was shown by transient absorption spectroscopy. Upon a visible excitation of the porphyrin subunit, an electron transfer from the porphyrin to the POM occurs and imparts it a catalytic activity. This has been demonstrated studying a model reaction such as the reduction of silver cations leading to nanoparticles. In all cases, the reduction of the silver cations takes place. We showed that the catalytic activity depends of the nature of the metal of the tetraoxometallic central cluster of the Dawson sandwich POM.

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Coordination of the tetrakis-pyridyl-porphyrin to the ferri-11-tungstophosphate. Electrocatalytic activity of the complex immobilized on a glassy carbon electrode

Cited by 2 publications

References 13 publications

Association of Keggin-type anions with cationic meso-substituted porphyrins: synthesis, characterization and oxidative catalytic studies

Association of Keggin-type anions with cationic meso-substituted porphyrins: synthesis, characterization and oxidative catalytic studies

Photocatalysis with Polyoxometalates Associated to Porphyrins under Visible Light: An Application of Charge Transfer in Electrostatic Complexes

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