期刊
INORGANIC CHEMISTRY COMMUNICATIONS
卷 7, 期 11, 页码 1238-1241出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.inoche.2004.09.020
关键词
N-confused porphyrins; Co(II) complex; spectroscopy; redox; electropolymerization
Co(II) ion was introduced in N-confused tetraphenylporphyrin (NCTPP) as evidenced by ESR and UV Vis spectroscopy as well as electrochemical methods. The Co(II)NCTPP complex shows a typical ESR spectrum of a high spin 3d(7) Co(II) ion, Soret bands at 460 and 445 nm in CH2Cl2 and CH3CN, respectively, and oxidation potential of +0.55 V vs. Ag/AgCl/KCl (satd.). Adsorbed films of Co(II)NCTPP on glassy carbon electrodes are stable and show reversible redox waves in aqueous basic solutions attributed to the Co(II)/Co(III)NCTPP couple with E-1/2 = +0.025 V at pH 14. It is also shown that NCTPP can be electropolymerized and the films readily metallate with Co(II) ions. (C) 2004 Elsevier B.V. All rights reserved.
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