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Właściwości elektrochemiczne nowych porfirazyn posiadających peryferyjne ugrupowanie 4-nitroimidazolilobutylosulfanylowe

Lijewski S., Rębiś T., Wachowska D., Milczarek G., Gośliński T.

Przemysł Chemiczny

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2014

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T. 93, nr 12

2229-2231

PL

Otrzymano 2 porfirazyny posiadające peryferyjne ugrupowania 4-nitroimidazolilobutylosulfanylowe. Były to porfirazyna bezmetaliczna oraz porfirazyna posiadająca w centrum koordynacyjnym jon manganu(III). Związki te scharakteryzowano z wykorzystaniem spektrometrii mas oraz spektroskopii UV–Vis. Porfirazynę manganową oceniono pod względem właściwości elektrokatalitycznych w kierunku redukcji tlenu. Stwierdzono, że modyfikacja elektrody z węgla szklistego za pomocą zaadsorbowanej cienkiej warstwy porfirazyny manganowej umożliwia poprawę wydajności reakcji elektroredukcji tlenu.

EN

Porphyrazine with peripheral 4-nitroimidazolylbutylsulfanyl substituents was complexed with Mn(III) ion and studied towards O2 redn. were also detd. The glassy C electrode modified with a thin layer of adsorbed Mn porphyrazine showed an improved efficiency in O2 electroredn.

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Synthesis, Characterization and Electrochemistry of New Type Soluble Porphyrazine Containing 3-Phenylpropylthio Substituent

Erdogmus A., Koca A., Avciata U., Gül A.

Polish Journal of Chemistry

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2008

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Vol. 82, nr 8

1541-1541

EN

Octakis(3-phenylpropylthio) porphyrazines MPz(SR)8, where (M = Mg, H, Ni, Zn, Co) and R = C9H11, were synthesized starting with the corresponding unsaturated dicarbonitrile derivative. These new compounds have been investigated and characterized by UV, FT-IR, 1H NMR, GC-MS and elemental analysis methods. As in the case of the unmetalated species, [H2Pz], three reversible one-electron reductions and one reversible oxidation process (two for Co(II)Pz) were observed for all of the metal complexes. The E1/2 values are similar for the H2Pz, Ni(II)Pz and Zn(II)Pz derivatives with negative shift due to the different effective charges of the central metal ion. Peak to peak separations and separation between the first reduction and first oxidation couples related with the HOMO-LUMO gap of the complexes are in harmony with the common porphyrazine complexes.

3

Synthesis, Absorption and Fluorescence Spectral Investigation of Phorphyrazines with Eight 2-Naphthalenecarboxy Esters

Coskun N. Y., Atak O., Kiliçarslan F. A., Yalçin S. M., Gül A.

Polish Journal of Chemistry

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2008

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Vol. 82, nr 11

2039-2047

EN

New magnesium porphyrazines substituted with eight naphthalenecarboxy groups on the peripheral positions were synthesized through a stepped reaction; first, cyclo tetramerization of 1,2-dicyano-1,2-bis(2-hydroxyethylthio)ethylene led to a porphyrazine formation which was subsequently esterified with 2-naphthoic acid. A metal-free derivative was prepared by treatment with trifluoroacetic acid. Metalloporphyrazines were prepared by insertion of Zn(II), Co(II) and Ni(II) ions. These porphyrazines were characterized by elemental analysis, 1H NMR, 13C NMR, LC-MS, FT-IR, and UV-Vis spectral data. In addition, fluorescence emissions of the compounds with naphthalene were obtained and the emissions due to the naphthalene moieties covalently-bonded to the porphyrazine were partially quenched.