Int. J. Mol. Sci. 2012, 13(7), 8112-8125; doi:10.3390/ijms13078112

Synthesis and Spectral Evaluation of Some Unsymmetrical Mesoporphyrinic Complexes

1,* email, 2,3email, 2email and 2email
Received: 15 February 2012; in revised form: 13 June 2012 / Accepted: 21 June 2012 / Published: 29 June 2012
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: Synthesis and spectral evaluation of new zinc and copper unsymmetrical mesoporphyrinic complexes are reported. Zn(II)-5-(4-acetoxy-3-methoxyphenyl)-10,15,20-tris-(4-carboxymethylphenyl)porphyrin, Zn(II)-5-[(3,4-methylenedioxy)phenyl]-10,15,20-tris-(4-carboxymethylphenyl)porphyrin, Cu(II)-5-(4-acetoxy-3-methoxyphenyl)-10,15,20-tris-(4-carboxymethylphenyl)porphyrin and Cu(II)-5-[(3,4-methylenedioxy)phenyl]-10,15,20-tris-(4-carboxymethylphenyl)porphyrin were synthesized using microwave-assisted synthesis. The complexes were characterized by elemental analysis, FT-IR, UV-Vis, EPR and NMR spectroscopy, which fully confirmed their structure. The spectral absorption properties of the porphyrinic complexes were studied in solvents with different polarities. Fluorescence emission and singlet oxygen formation quantum yields were evaluated for the compounds under study, revealing high yields for the zinc derivatives. The copper complexes are not emissive and only display residual capacity for singlet oxygen formation.
Keywords: unsymmetrical mesoporphyrinic complexes; microwave-assisted synthesis; solvatochromism; singlet oxygen; fluorescence quantum yields
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MDPI and ACS Style

Boscencu, R.; Oliveira, A.S.; Ferreira, D.P.; Ferreira, L.F.V. Synthesis and Spectral Evaluation of Some Unsymmetrical Mesoporphyrinic Complexes. Int. J. Mol. Sci. 2012, 13, 8112-8125.

AMA Style

Boscencu R, Oliveira AS, Ferreira DP, Ferreira LFV. Synthesis and Spectral Evaluation of Some Unsymmetrical Mesoporphyrinic Complexes. International Journal of Molecular Sciences. 2012; 13(7):8112-8125.

Chicago/Turabian Style

Boscencu, Rica; Oliveira, Anabela Sousa; Ferreira, Diana P.; Ferreira, Luís Filipe Vieira. 2012. "Synthesis and Spectral Evaluation of Some Unsymmetrical Mesoporphyrinic Complexes." Int. J. Mol. Sci. 13, no. 7: 8112-8125.

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