Studies on the Photoinduced Interaction between Zn(II) Porphyrin and Colloidal TiO2
The interaction of Zn(II) porphyrin (ZnPP) with colloidal TiO2 was studied by absorption and fluorescence spectroscopy. The fluorescence emission of ZnPP was quenched by colloidal TiO2 upon excitation of its absorption band. The quenching rate constant (kq) is 1.24×1011 M−1 s−1. These data indicate...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2010-01-01
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| Series: | International Journal of Photoenergy |
| Online Access: | http://dx.doi.org/10.1155/2010/547135 |
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| author | Heyong Huang Jiahong Zhou Yan Zhou Yanhuai Zhou Yuying Feng |
| author_facet | Heyong Huang Jiahong Zhou Yan Zhou Yanhuai Zhou Yuying Feng |
| author_sort | Heyong Huang |
| collection | DOAJ |
| description | The interaction of Zn(II) porphyrin (ZnPP) with colloidal TiO2 was studied by absorption and fluorescence spectroscopy. The fluorescence emission of ZnPP was quenched by colloidal TiO2 upon excitation of its absorption band. The quenching rate constant (kq) is 1.24×1011 M−1 s−1. These data indicate that there is an interaction between ZnPP and colloidal TiO2 nanoparticle surface. The quenching mechanism is discussed on the basis of the quenching rate constant as well as the reduction potential of the colloidal TiO2. And the mechanism of electron transfer has been confirmed by the calculation of free energy change (ΔGet)
by applying Rehm-Weller equation as well as energy level diagram. |
| format | Article |
| id | doaj-art-2a1e2c29696b48feb5e0f12d94942109 |
| institution | Kabale University |
| issn | 1110-662X 1687-529X |
| language | English |
| publishDate | 2010-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Photoenergy |
| spelling | doaj-art-2a1e2c29696b48feb5e0f12d949421092025-02-03T05:58:17ZengWileyInternational Journal of Photoenergy1110-662X1687-529X2010-01-01201010.1155/2010/547135547135Studies on the Photoinduced Interaction between Zn(II) Porphyrin and Colloidal TiO2Heyong Huang0Jiahong Zhou1Yan Zhou2Yanhuai Zhou3Yuying Feng4Key Lab of Biofunctional Materials of Jiangsu Province, Analysis and Testing Center, Nanjing Normal University, Nanjing 210097, ChinaKey Lab of Biofunctional Materials of Jiangsu Province, Analysis and Testing Center, Nanjing Normal University, Nanjing 210097, ChinaDepartment of Chemistry and Environmental Science, Nanjing Normal University, Nanjing 210097, ChinaDepartment of Physical Science and Technology, Nanjing Normal University, Nanjing 210097, ChinaKey Lab of Biofunctional Materials of Jiangsu Province, Analysis and Testing Center, Nanjing Normal University, Nanjing 210097, ChinaThe interaction of Zn(II) porphyrin (ZnPP) with colloidal TiO2 was studied by absorption and fluorescence spectroscopy. The fluorescence emission of ZnPP was quenched by colloidal TiO2 upon excitation of its absorption band. The quenching rate constant (kq) is 1.24×1011 M−1 s−1. These data indicate that there is an interaction between ZnPP and colloidal TiO2 nanoparticle surface. The quenching mechanism is discussed on the basis of the quenching rate constant as well as the reduction potential of the colloidal TiO2. And the mechanism of electron transfer has been confirmed by the calculation of free energy change (ΔGet) by applying Rehm-Weller equation as well as energy level diagram.http://dx.doi.org/10.1155/2010/547135 |
| spellingShingle | Heyong Huang Jiahong Zhou Yan Zhou Yanhuai Zhou Yuying Feng Studies on the Photoinduced Interaction between Zn(II) Porphyrin and Colloidal TiO2 International Journal of Photoenergy |
| title | Studies on the Photoinduced Interaction between Zn(II) Porphyrin and Colloidal TiO2 |
| title_full | Studies on the Photoinduced Interaction between Zn(II) Porphyrin and Colloidal TiO2 |
| title_fullStr | Studies on the Photoinduced Interaction between Zn(II) Porphyrin and Colloidal TiO2 |
| title_full_unstemmed | Studies on the Photoinduced Interaction between Zn(II) Porphyrin and Colloidal TiO2 |
| title_short | Studies on the Photoinduced Interaction between Zn(II) Porphyrin and Colloidal TiO2 |
| title_sort | studies on the photoinduced interaction between zn ii porphyrin and colloidal tio2 |
| url | http://dx.doi.org/10.1155/2010/547135 |
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