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Kiran V, Nagashree KL, Sampath S. Synergistic electrochemical activity of titanium carbide and carbon towards fuel cell reactions. RSC Adv 2014. [DOI: 10.1039/c3ra46281a] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
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Malinga N, Antunes E, Nyokong T. Synthesis and physicochemical behaviour of aluminium bis and tris(diammine platinum) octacarboxyphthalocyanine. Polyhedron 2013. [DOI: 10.1016/j.poly.2013.02.073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Fundamental Studies on the Electrocatalytic Properties of Metal Macrocyclics and Other Complexes for the Electroreduction of O2. ACTA ACUST UNITED AC 2013. [DOI: 10.1007/978-1-4471-4911-8_7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/26/2023]
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Bulgakov RA, Kuznetsova NA, Dolotova OV, Solovieva LI, Mack J, Chidawanyika WJU, Kaliya OL, Nyokong T. Synthesis and photophysical properties of covalent conjugates of aqua platinum(II) and octacarboxy-substituted zinc phthalocyanine. J PORPHYR PHTHALOCYA 2012. [DOI: 10.1142/s1088424612501209] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
New covalent conjugates of aqua platinum(II) and octacarboxy-substituted zinc phthalocyanine, bearing one, two, three and four aqua platinum moieties on the periphery of the Pc ligand have been synthesized and characterized. The effect of the stepwise introduction of the aqua platinums on the photophysical and photochemical properties of these compounds has been investigated in dimethylsulfoxide solution. It has been found that aqua platinum moieties have only a limited effect on the dynamics of the singlet and triplet excited states, on the ability to sensitize singlet oxygen formation and on the photostability. Each conjugate has a high singlet oxygen quantum yield (ΦΔ 0.51–0.62) and thus retains potential for use as a dual action anticancer drugs by acting as a sensitizer for PDT in addition to the likely chemotherapeutic effects of the Pt(II) complexes.
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Affiliation(s)
- Roman A. Bulgakov
- Organic Intermediates and Dyes Institute, B. Sadovaya ¼, Moscow 123995, Russia
| | - Nina A. Kuznetsova
- Organic Intermediates and Dyes Institute, B. Sadovaya ¼, Moscow 123995, Russia
| | - Olga V. Dolotova
- Organic Intermediates and Dyes Institute, B. Sadovaya ¼, Moscow 123995, Russia
| | | | - John Mack
- Department of Chemistry, Rhodes University, Grahamstown 6140, South Africa
| | | | - Oleg L. Kaliya
- Organic Intermediates and Dyes Institute, B. Sadovaya ¼, Moscow 123995, Russia
| | - Tebello Nyokong
- Department of Chemistry, Rhodes University, Grahamstown 6140, South Africa
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Zagal JH, Griveau S, Santander-Nelli M, Granados SG, Bedioui F. Carbon nanotubes and metalloporphyrins and metallophthalocyanines-based materials for electroanalysis. J PORPHYR PHTHALOCYA 2012. [DOI: 10.1142/s1088424612300054] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
We discuss here the state of the art on hybrid materials made from single (SWCNT) or multi (MWCNT) walled carbon nanotubes and MN4complexes such as metalloporphyrins and metallophthalocyanines. The hybrid materials have been characterized by several methods such as cyclic voltammetry (CV), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), atomic force microscopy (AFM) and scanning electrochemical microscropy (SECM). The materials are employed for electrocatalysis of reactions such as oxygen and hydrogen peroxide reduction, nitric oxide oxidation, oxidation of thiols and other pollutants.
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Affiliation(s)
- José H. Zagal
- Universidad de Santiago de Chile, Departamento de Quimica de los Materiales, Facultad de Quimica y Biologia, Casilla 40, Correo 33, Santiago 9170022, Chile
| | - Sophie Griveau
- Chimie ParisTech, Unité de Pharmacologie Chimique et Génétique et Imagerie, 11 rue Pierre et Marie Curie, 75005 Paris, France
- CNRS, UMR 8151, 75005 Paris, France
- Université Paris Descartes, 75006 Paris, France
- INSERM, U1022, 75005 Paris, France
| | - Mireya Santander-Nelli
- Universidad de Santiago de Chile, Departamento de Quimica de los Materiales, Facultad de Quimica y Biologia, Casilla 40, Correo 33, Santiago 9170022, Chile
| | - Silvia Gutierrez Granados
- Universidad de Guanajuato, División de Ciencias Naturales y Exactas, Departamento de Química, Guanajuato, Mexico
| | - Fethi Bedioui
- Chimie ParisTech, Unité de Pharmacologie Chimique et Génétique et Imagerie, 11 rue Pierre et Marie Curie, 75005 Paris, France
- CNRS, UMR 8151, 75005 Paris, France
- Université Paris Descartes, 75006 Paris, France
- INSERM, U1022, 75005 Paris, France
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Masa J, Ozoemena K, Schuhmann W, Zagal JH. Oxygen reduction reaction usingN4-metallomacrocyclic catalysts: fundamentals on rational catalyst design. J PORPHYR PHTHALOCYA 2012. [DOI: 10.1142/s1088424612300091] [Citation(s) in RCA: 109] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
In this review, we describe and discuss the developments in the use of metalloporphyrins and metallophthalocyanines as catalysts for oxygen reduction in aqueous electrolytes. The main goal of most researchers in this field has been to design catalysts which can achieve facile reduction of oxygen by the four-electron transfer pathway at the lowest overpotential possible. With this in mind, the primary objective of this review was to bring to light the research frontiers uncovering important milestones towards the synthesis and design of promising N4-metallomacrocyclic catalysts which accomplish the four-electron reduction of oxygen, and, based on literature, to draw attention to the fundamental requirements for synthesis of improved catalysts operating at low overpotentials. Our emphasis was not to make parallel comparisons between individual classes of N4-metallomacrocyclic complexes with respect to their activity, but rather to focus on the commonalities of the fundamental properties that govern their reactivities and how these may be aptly manipulated to develop better catalysts. Therefore, besides discussion of the progress attained with regard to synthesis and design of catalysts with high selectivity towards four-electron reduction of O2, a major part of the review highlights quantitative structure-activity relationships (QSAR) which govern the activity and stability of these complexes, which when well understood, refined and carefully implemented should constitute a fundamental gateway for rational design of better catalysts.
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Affiliation(s)
- Justus Masa
- Analytische Chemie — Elektroanalytik & Sensorik, Ruhr-Universität Bochum, Universitätsstr. 150, D-44780 Bochum, Germany
| | - Kenneth Ozoemena
- Energy and Process Unit, Materials Science and Manufacturing, Council for Scientific and Industrial Research (CSIR), Pretoria 0001, South Africa
- Department of Chemistry, University of Pretoria, Pretoria 0002, South Africa
| | - Wolfgang Schuhmann
- Analytische Chemie — Elektroanalytik & Sensorik, Ruhr-Universität Bochum, Universitätsstr. 150, D-44780 Bochum, Germany
| | - José H. Zagal
- Departamento de Química de los Materiales, Facultad de Química y Biología, Universidad de Santiago de Chile, Casilla 40, Correo 33, Santiago, Chile
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