Electrochemical characterization of ordered arrays of metallo-porphyrins in aqueous solution (511 views)
Dalton T (ISSN: 1477-9226, 1477-9234, 1477-9234electronic), 2011 Apr 28; 40(16): 4223-4229.
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Paper type: Journal Article, Research Support, Non-U. S. Gov'T,
Impact factor: 3.838, 5-year impact factor: 3.887
Url: http://www.scopus.com/inward/record.url?eid=2-s2.0-79953747813&partnerID=40&md5=9cac34ddfd15ed5230b556699bff435b
Keywords: Aqueous Media, Aqueous Solutions, Calix[4]arenes, Electrochemical Characterizations, Electron Reduction, Internal Electronics, Key Component, Metalloporphyrins, Multi-Step, Negative Shift, Non-Covalent Synthesis, Ordered Array, Positive Value, Pyridyl, Redox Potentials, Redox Process, Simulation Procedures, Square Wave Voltammetry, Supramolecular Complexes, Supramolecular Species, Tetrakis, Electrochemistry, Polymer Blends, Redox Reactions, Supramolecular Chemistry, Copper, Water, Zinc, Article, Oxidation Reduction Reaction, Solution And Solubility, Oxidation-Reduction, Copper Chemistry, Metalloporphyrins Chemistry, Water Chemistry, Zinc Chemistry, Calix [4] Arenes,
Affiliations:
*** IBB - CNR ***
Istituto di Biostrutture e Bioimmagini, CNR, U.O.S. di Catania, V.le A. Doria 6, 95125, Catania, Italy
Dipartimento di Scienze Chimiche, Università di Catania, V.le A. Doria 6, 95125 Catania, Italy
References:
Not available.
Dalton T (ISSN: 1477-9226, 1477-9234, 1477-9234electronic), 2011 Apr 28; 40(16): 4223-4229.
Export to BibTeX Export to EndNote
Paper type: Journal Article, Research Support, Non-U. S. Gov'T,
Impact factor: 3.838, 5-year impact factor: 3.887
Url: http://www.scopus.com/inward/record.url?eid=2-s2.0-79953747813&partnerID=40&md5=9cac34ddfd15ed5230b556699bff435b
Keywords: Aqueous Media, Aqueous Solutions, Calix[4]arenes, Electrochemical Characterizations, Electron Reduction, Internal Electronics, Key Component, Metalloporphyrins, Multi-Step, Negative Shift, Non-Covalent Synthesis, Ordered Array, Positive Value, Pyridyl, Redox Potentials, Redox Process, Simulation Procedures, Square Wave Voltammetry, Supramolecular Complexes, Supramolecular Species, Tetrakis, Electrochemistry, Polymer Blends, Redox Reactions, Supramolecular Chemistry, Copper, Water, Zinc, Article, Oxidation Reduction Reaction, Solution And Solubility, Oxidation-Reduction, Copper Chemistry, Metalloporphyrins Chemistry, Water Chemistry, Zinc Chemistry, Calix [4] Arenes,
Affiliations:
*** IBB - CNR ***
Istituto di Biostrutture e Bioimmagini, CNR, U.O.S. di Catania, V.le A. Doria 6, 95125, Catania, Italy
Dipartimento di Scienze Chimiche, Università di Catania, V.le A. Doria 6, 95125 Catania, Italy
References:
Not available.
Electrochemical characterization of ordered arrays of metallo-porphyrins in aqueous solution
Metallated meso-tetrakis (N-methyl-4-pyridyl) porphyrin (MTMPyP) and 5, 11, 17, 23-tetrasulfonato-25, 26, 27, 28-tetrakis- (hydroxylcarbonylmethoxy) -calix [4] arene (C4TsTc) were used as key components for building up discrete supramolecular entities starting from the formation of the template species MTMPyP: C4TsTc (1: 4, M = Cu, Zn). The stepwise addition of further amount of porphyrin allows the facile non-covalent synthesis of discrete supramolecular entities (2: 4 and 3: 4) which can be built up just by programming the right stoichiometric addition of the proper porphyrin. The redox potentials of these supramolecular complexes in aqueous media, as well as those of the parent metalloporphyrins, have been characterized by using square wave voltammetry technique. The use of the simulation procedure leads us to establish the electrochemical steps involved in the redox processes for each supramolecular species, evidencing multistep electron reductions which were not experimentally resolved clearly because of their closeness. The most striking result is that the electrochemistry of each of these supramolecular complexes is different from that of the parent components. This "anomalous" behavior can be explained only considering each of these supramolecular complexes as a unique entity, in which such an internal electronic communication might occur. The formation of the 1: 4 supramolecular complex produces a negative shift as to the metallated porphyrin redox potentials of about 30 mV. In the case of 2: 4 and 3: 4 species, the redox potentials progressively shifts towards more positive values by about 10-15 mV for each complexation step. 2011 The Royal Society of Chemistry
Metallated meso-tetrakis (N-methyl-4-pyridyl) porphyrin (MTMPyP) and 5, 11, 17, 23-tetrasulfonato-25, 26, 27, 28-tetrakis- (hydroxylcarbonylmethoxy) -calix [4] arene (C4TsTc) were used as key components for building up discrete supramolecular entities starting from the formation of the template species MTMPyP: C4TsTc (1: 4, M = Cu, Zn). The stepwise addition of further amount of porphyrin allows the facile non-covalent synthesis of discrete supramolecular entities (2: 4 and 3: 4) which can be built up just by programming the right stoichiometric addition of the proper porphyrin. The redox potentials of these supramolecular complexes in aqueous media, as well as those of the parent metalloporphyrins, have been characterized by using square wave voltammetry technique. The use of the simulation procedure leads us to establish the electrochemical steps involved in the redox processes for each supramolecular species, evidencing multistep electron reductions which were not experimentally resolved clearly because of their closeness. The most striking result is that the electrochemistry of each of these supramolecular complexes is different from that of the parent components. This "anomalous" behavior can be explained only considering each of these supramolecular complexes as a unique entity, in which such an internal electronic communication might occur. The formation of the 1: 4 supramolecular complex produces a negative shift as to the metallated porphyrin redox potentials of about 30 mV. In the case of 2: 4 and 3: 4 species, the redox potentials progressively shifts towards more positive values by about 10-15 mV for each complexation step. 2011 The Royal Society of Chemistry
Electrochemical characterization of ordered arrays of metallo-porphyrins in aqueous solution
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Electrochemical characterization of ordered arrays of metallo-porphyrins in aqueous solution
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13 Records (12 excluding Abstracts).
Total impact factor: 55.869 (52.71 excluding Abstracts).
Total 5 year impact factor: 60.254 (57.417 excluding Abstracts).
Total impact factor: 55.869 (52.71 excluding Abstracts).
Total 5 year impact factor: 60.254 (57.417 excluding Abstracts).
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