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Cyclic voltammetry of non-peripheral thioaryl substituted phthalocyanines
Phthalocyanines have become of major interest as functional colorants for dye-sensitized photovoltaic cells. Syntheses of non-peripheral (1,4,8,11,15,18,22,25) thioaryl substituted phthalocyanines have been reported. These phthalocyanines exhibited a Q band in the near-infrared region. In order to d...
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Published in: | Dyes and pigments 2013-02, Vol.96 (2), p.430-434 |
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Main Authors: | , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | Phthalocyanines have become of major interest as functional colorants for dye-sensitized photovoltaic cells. Syntheses of non-peripheral (1,4,8,11,15,18,22,25) thioaryl substituted phthalocyanines have been reported. These phthalocyanines exhibited a Q band in the near-infrared region.
In order to develop next generation photovoltaic cells, we have synthesized 1,4,8,11,15,18,22,25-octakis(thioaryl)phthalocyanines and estimated their electron transfer ability using cyclic voltammetry. In the cyclic voltammograms, these compounds showed reduction and oxidation potentials, which are attributed to the presence of the sulfur atoms in the thioaryl substituents at the peripheral positions of phthalocyanine.
The electron transfer mechanisms of the phthalocyanines having cobalt and zinc as their central metal atoms were attributed to reduction and oxidation of their central metal, while electron transfer in the other metal-free compounds resulted from the highest occupied molecular orbital to the lowest unoccupied molecular orbital electron transitions.
► In order to develop next generation photovoltaic cells. ► Synthesis of 1,4,8,11,15,18,22,25-octakis(thioaryl)phthalocyanines. ► Estimation of their electron transfer ability using cyclic voltammetry. |
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ISSN: | 0143-7208 1873-3743 |
DOI: | 10.1016/j.dyepig.2012.08.025 |