Spectroelectrochemical behavior of N-confused dioxohexaphyrins

Ildemar Mayer; Kiyohisa Nakamura; Alagar Srinivasan; Hiroyuki Furuta; Henrique E. Toma; Koiti Araki

doi:10.1142/S1088424605000927

Spectroelectrochemical behavior of N-confused dioxohexaphyrins

Ildemar Mayer, Kiyohisa Nakamura, Alagar Srinivasan, Hiroyuki Furuta, Henrique E. Toma, Koiti Araki

Research output: Contribution to journal › Article › peer-review

12 Citations (Scopus)

Abstract

Doubly N-confused dioxohexaphyrins were characterized by cyclic voltammetry and spectroelectrochemistry in the -2.5 to +2.0 V vs Ag | Ag⁺ (0.10 M, in CH₃CN) range. Six reversible monoelectronic processes were found suggesting that the rich electrochemistry of porphyrin systems was preserved in that expanded macrocycle. However, the electronic and electrochemical properties of the free-base, Cu(II) and Ni(II) species were shown to be sensitive to the coordinated transition metal ions and solvent revealing a quite complex behavior, probably reflecting the higher flexibility and strong conformational effects on the energy levels and stability of those complexes.

Original language	English
Pages (from-to)	813-820
Number of pages	8
Journal	Journal of Porphyrins and Phthalocyanines
Volume	9
Issue number	12
DOIs	https://doi.org/10.1142/S1088424605000927
Publication status	Published - 2005

All Science Journal Classification (ASJC) codes

Chemistry(all)

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10.1142/S1088424605000927

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title = "Spectroelectrochemical behavior of N-confused dioxohexaphyrins",

abstract = "Doubly N-confused dioxohexaphyrins were characterized by cyclic voltammetry and spectroelectrochemistry in the -2.5 to +2.0 V vs Ag | Ag+ (0.10 M, in CH3CN) range. Six reversible monoelectronic processes were found suggesting that the rich electrochemistry of porphyrin systems was preserved in that expanded macrocycle. However, the electronic and electrochemical properties of the free-base, Cu(II) and Ni(II) species were shown to be sensitive to the coordinated transition metal ions and solvent revealing a quite complex behavior, probably reflecting the higher flexibility and strong conformational effects on the energy levels and stability of those complexes.",

author = "Ildemar Mayer and Kiyohisa Nakamura and Alagar Srinivasan and Hiroyuki Furuta and Toma, {Henrique E.} and Koiti Araki",

note = "Funding Information: The authors are grateful to the financial support provided by FAPESP (Funda{\c c}{\~a}o de Amparo {\`a} Pesquisa do Estado de S{\~a}o Paulo) and CNPq (Conselho Nacional de Desenvolvimento Cient{\'i}fico e Tecnol{\'o}gico).",

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doi = "10.1142/S1088424605000927",

language = "English",

volume = "9",

pages = "813--820",

journal = "Journal of Porphyrins and Phthalocyanines",

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publisher = "Society of Porphyrins and Phthalocyanines (SPP)",

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TY - JOUR

T1 - Spectroelectrochemical behavior of N-confused dioxohexaphyrins

AU - Mayer, Ildemar

AU - Nakamura, Kiyohisa

AU - Srinivasan, Alagar

AU - Furuta, Hiroyuki

AU - Toma, Henrique E.

AU - Araki, Koiti

N1 - Funding Information: The authors are grateful to the financial support provided by FAPESP (Fundação de Amparo à Pesquisa do Estado de São Paulo) and CNPq (Conselho Nacional de Desenvolvimento Científico e Tecnológico).

PY - 2005

Y1 - 2005

N2 - Doubly N-confused dioxohexaphyrins were characterized by cyclic voltammetry and spectroelectrochemistry in the -2.5 to +2.0 V vs Ag | Ag+ (0.10 M, in CH3CN) range. Six reversible monoelectronic processes were found suggesting that the rich electrochemistry of porphyrin systems was preserved in that expanded macrocycle. However, the electronic and electrochemical properties of the free-base, Cu(II) and Ni(II) species were shown to be sensitive to the coordinated transition metal ions and solvent revealing a quite complex behavior, probably reflecting the higher flexibility and strong conformational effects on the energy levels and stability of those complexes.

AB - Doubly N-confused dioxohexaphyrins were characterized by cyclic voltammetry and spectroelectrochemistry in the -2.5 to +2.0 V vs Ag | Ag+ (0.10 M, in CH3CN) range. Six reversible monoelectronic processes were found suggesting that the rich electrochemistry of porphyrin systems was preserved in that expanded macrocycle. However, the electronic and electrochemical properties of the free-base, Cu(II) and Ni(II) species were shown to be sensitive to the coordinated transition metal ions and solvent revealing a quite complex behavior, probably reflecting the higher flexibility and strong conformational effects on the energy levels and stability of those complexes.

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JO - Journal of Porphyrins and Phthalocyanines

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ER -

Spectroelectrochemical behavior of N-confused dioxohexaphyrins

Abstract

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