Investigation of the Qx-Qy Equilibrium in a Metal-Free Phthalocyanine
Phthalocyanines (Pcs) have attracted a lot of interest as small molecules for organic electronics. However, some excited‐state properties of metal‐free phthalocyanines, as for example, the dynamics of the transition between the nondegenerate Qx and Qy states in a metal‐free phthalocyanine, have not...
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| Veröffentlicht in: | Chemphyschem 2015-12, Vol.16 (18), p.3992-3996 |
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| creator | Baeten, Yannick Fron, Eduard Ruzié, Christian Geerts, Yves Henri Van Der Auweraer, Mark |
| description | Phthalocyanines (Pcs) have attracted a lot of interest as small molecules for organic electronics. However, some excited‐state properties of metal‐free phthalocyanines, as for example, the dynamics of the transition between the nondegenerate Qx and Qy states in a metal‐free phthalocyanine, have not been fully established. This effect results in a blue‐shifted shoulder with low intensity in the Pc fluorescence spectrum. This shoulder was suggested to be related to emission from the more energetic Qy state. By using ultrafast femtosecond transient absorption, we have found a clear equilibrium between the Qx and Qy state of metal‐free phthalocyanines in solution.
We're so excited! Femtosecond fluorescence upconversion shows that equilibration between the Qx and Qy state in a metal‐free phthalocyanine occurs within 7 ps. |
| doi_str_mv | 10.1002/cphc.201500386 |
| format | Article |
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| source | Wiley Online Library Journals Frontfile Complete |
| subjects | chromophores fluorescence spectroscopy photophysics phthalocyanines pump probe |
| title | Investigation of the Qx-Qy Equilibrium in a Metal-Free Phthalocyanine |
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