Photooxidation of anthracene under visible light with metallocarboxyphenylporphyrins
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| Formato: | Artículo científico |
| Lenguaje: | en |
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Universidad de Antioquia
2014
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| _version_ | 1876453041463361536 |
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| author | Carlos Enrique Díaz-Uribe |
| author_facet | Carlos Enrique Díaz-Uribe |
| contents | Photooxidation of anthracene under visible light with metallocarboxyphenylporphyrins Carlos Enrique Díaz-Uribe William Andrés Vallejo-Lozada Fernando Martínez-Ortega Ingeniería TEMPO Porphyrin anthracene singlet oxygen In this work, metallocarboxyphenylporphyrins (TcPP-M, M= Cu y Zn) and metal-free carboxyphenylporphyrin (TcPPH) have been synthesized and their efficiency in the photooxidation of anthracene under visible light ( λ > 500 nm) through generation of oxygen singlet ( 1 O 2 ) has been evaluated. 1 O 2 was detected by Electron Paramagnetic Resonance (EPR), where it reacts with 2,2,6,6-tetramethyl-4-piperidone-N (TEMP) to produce 2,2,6,6-tetramethyl- 4-piperidone-N-oxyl radical (TEMPO). The catalytic results indicated that the incorporation of the metal in the porphyrin ring strongly affects their efficiency on the anthracene oxidation. The TcPPH showed a higher photonic efficiency (31%) in the anthracene conversion than TcPPZn (13%) and TcPPCu (9%). This result may be related to the disruption of the planarity of the porphyrin ring. Finally, the formation of anthraquinone and oxanthrone was detected as the oxidation products in the anthracene reaction with 1 O 2. 2014 artículo científico 0120-6230 https://www.redalyc.org/articulo.oa?id=43032606019 en http://www.redalyc.org/revista.oa?id=430 Revista Facultad de Ingeniería Universidad de Antioquia application/pdf Universidad de Antioquia Revista Facultad de Ingeniería Universidad de Antioquia (Colombia) Num.73 |
| format | Artículo científico |
| id | redalyc_43032606019 |
| institution | Redalyc |
| language | en |
| publishDate | 2014 |
| publisher | Universidad de Antioquia |
| spellingShingle | Photooxidation of anthracene under visible light with metallocarboxyphenylporphyrins Carlos Enrique Díaz-Uribe Ingeniería TEMPO Porphyrin anthracene singlet oxygen Photooxidation of anthracene under visible light with metallocarboxyphenylporphyrins Carlos Enrique Díaz-Uribe William Andrés Vallejo-Lozada Fernando Martínez-Ortega Ingeniería TEMPO Porphyrin anthracene singlet oxygen In this work, metallocarboxyphenylporphyrins (TcPP-M, M= Cu y Zn) and metal-free carboxyphenylporphyrin (TcPPH) have been synthesized and their efficiency in the photooxidation of anthracene under visible light ( λ > 500 nm) through generation of oxygen singlet ( 1 O 2 ) has been evaluated. 1 O 2 was detected by Electron Paramagnetic Resonance (EPR), where it reacts with 2,2,6,6-tetramethyl-4-piperidone-N (TEMP) to produce 2,2,6,6-tetramethyl- 4-piperidone-N-oxyl radical (TEMPO). The catalytic results indicated that the incorporation of the metal in the porphyrin ring strongly affects their efficiency on the anthracene oxidation. The TcPPH showed a higher photonic efficiency (31%) in the anthracene conversion than TcPPZn (13%) and TcPPCu (9%). This result may be related to the disruption of the planarity of the porphyrin ring. Finally, the formation of anthraquinone and oxanthrone was detected as the oxidation products in the anthracene reaction with 1 O 2. 2014 artículo científico 0120-6230 https://www.redalyc.org/articulo.oa?id=43032606019 en http://www.redalyc.org/revista.oa?id=430 Revista Facultad de Ingeniería Universidad de Antioquia application/pdf Universidad de Antioquia Revista Facultad de Ingeniería Universidad de Antioquia (Colombia) Num.73 |
| title | Photooxidation of anthracene under visible light with metallocarboxyphenylporphyrins |
| topic | Ingeniería TEMPO Porphyrin anthracene singlet oxygen |
| url | https://www.redalyc.org/articulo.oa?id=43032606019 |