Metalloporphyrin-catalyzed oxidations [1] 2. Inhibition and re-activation of metalloporphyrin catalysts. A simple model for hormone action

Fuhrhop, Jürgen‐Hinrich; Baccouche, Mohamed; Grabow, H.; Arzoumanian, Henri

doi:10.1016/0304-5102(80)85022-x

Cited by 18 publications

(5 citation statements)

References 23 publications

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“…Such dimers are thought to play a dominant role in the active center of plant photosynthesis [l]. Porphyrins also bind flavins [4] and steroids [5,6]. The molecular complexes with flavins may again be connected with electron transfer in photosynthesis.…”

Section: Introductionmentioning

confidence: 99%

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Intermolecular interactions in porphin dimers: A quantum mechanical study

Sudhindra

Fuhrhop

1981

Int J of Quantum Chemistry

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AbstradBoth short-range and long-range intermolecular interaction energies between two porphin molecules, both in their ground state, separated by a range of interplanar distances from 3 to 4.5 A, are estimated using the standard perturbation theory. The results indicate that a 60' rotated sandwich structure is the most stable conformation for the dimer. Certain translated as well as the perfect sandwich forms are other favoured structures. The stability of the dimer is mainly due to the van der Waals interactions with no significant contribution from the charge-transfer interactions. Biochemical implications of these findings are discussed.(b) L. Salem, Discuss. Faraday SOC. 40, 150 (1965). 99, 7470 (1977).

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Section: Introductionmentioning

confidence: 99%

“…On the other hand, porphyrin dimers from closed shell monomers may be dissociated by equimolar amounts of steroids [6] and other cyclic hydrocarbons [9] to form nonsymmetric molecular complexes with high efficiency.…”

Section: Introductionmentioning

confidence: 99%

Intermolecular interactions in porphin dimers: A quantum mechanical study

Sudhindra

Fuhrhop

1981

Int J of Quantum Chemistry

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“…For example, metal-H 2 Pc can be used as a positive material for Liion battery [9]. In the field of Ni-MH battery [10,11] and fuel cell [12,13], metal-H 2 Pcs is widely studied as electrocatalyst. Furthermore, due to its intrinsic characteristic of conduction, H 2 Pc compounds have wide applications in the field of solar cell [14].…”

Section: Introductionmentioning

confidence: 99%

Preparation and stability study of potassium ferrate (VI) coated with phthalocyanine for alkaline super-iron battery

Huang

Yang

Wang

et al. 2014

J Solid State Electrochem

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The potassium ferrate (VI) coated with phthalocyanine (H 2 Pc) was successfully prepared via a facile coprecipitation process. Scanning electron microscopy and Fourier transform infrared spectrum revealed that K 2 FeO 4 had been coated with H 2 Pc particles. When evaluated as cathodic material for alkaline super-ion battery, the effects of H 2 Pc coating on the electrochemical stability of K 2 FeO 4 electrodes upon prolonged immersion time were investigated by galvanostatic discharge test, open-circuit potential measurements, and electrochemical impedance spectroscopy. The results show that the decomposition of K 2 FeO 4 in electrolyte is obviously suppressed by H 2 Pc coating with a short immersion time, which could enhance the discharge capacity of electrodes. Furthermore, the open-circuit potential of the H 2 Pccoated K 2 FeO 4 electrode is higher than that of the bare K 2 FeO 4 electrode, which indicates the improvement of anticorrosive ability. In addition, the ability of charge transfer between electrode and electrolyte is enhanced by H 2 Pc coating due to the inhibition on formation of Fe (III) layer, but the improved performance will decline upon prolonged immersion time.

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“…Ring-metalated phthalocyanine compounds exhibit a strong ability of activating oxygen [15,16] , and excellent electrocatalysis for the reduction of oxygen [17][18][19][20][21][22] . Moreover, it is only about 10% of ring-metalated porphyrin in price.…”

Section: Introductionmentioning

confidence: 99%

A comparison of iron phthalocyanine and cobalt porphyrin on the electrochemical catalysis in Ni-MH battery

Wang

Chen

et al. 2007

CHINESE SCI BULL

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The effects of iron phthalocyanine (FePc) and cobalt porphyrin (CoPp) on inner pressure and cycle behavior of sealed Ni-MH batteries were investigated in this study. The morphology of battery electrode was observed by SEM. The electrochemical impedance spectroscopy of floating-charge/discharge battery was also measured. Experimental results show that the addition of FePc or CoPp to the alloy electrode is an effective approach to decrease the internal pressure of battery during the process of charge and overcharge. In contrast to CoPp, the battery with FePc exhibits a slower capacity decay and a smaller overpotential at the same charge-discharge rate. As an electrocatalyst, FePc may more effectively speed up the reduction of oxygen, and decrease its reduction potential. As a result, the charge process is accelerated, the gas evolution is reduced and the pulverization of electrode materials is slowed down.Ni-MH battery, electrochemical catalysis, iron phthalocyanine, cobalt porphyrin

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Metalloporphyrin-catalyzed oxidations [1] 2. Inhibition and re-activation of metalloporphyrin catalysts. A simple model for hormone action

Cited by 18 publications

References 23 publications

Intermolecular interactions in porphin dimers: A quantum mechanical study

Intermolecular interactions in porphin dimers: A quantum mechanical study

Preparation and stability study of potassium ferrate (VI) coated with phthalocyanine for alkaline super-iron battery

A comparison of iron phthalocyanine and cobalt porphyrin on the electrochemical catalysis in Ni-MH battery

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