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Baeten Y, Fron E, Ruzié C, et al. Investigation of the Qx -Qy Equilibrium in a Metal-Free Phthalocyanine. Chemphyschem. 2015;16(18):3992-6doi: 10.1002/cphc.201500386.
Baeten, Y., Fron, E., Ruzié, C., Geerts, Y. H., & Van Der Auweraer, M. (2015). Investigation of the Qx -Qy Equilibrium in a Metal-Free Phthalocyanine. Chemphyschem : a European journal of chemical physics and physical chemistry, 16(18), 3992-6. https://doi.org/10.1002/cphc.201500386
Baeten, Yannick, et al. "Investigation of the Qx -Qy Equilibrium in a Metal-Free Phthalocyanine." Chemphyschem : a European journal of chemical physics and physical chemistry vol. 16,18 (2015): 3992-6. doi: https://doi.org/10.1002/cphc.201500386
Baeten Y, Fron E, Ruzié C, Geerts YH, Van Der Auweraer M. Investigation of the Qx -Qy Equilibrium in a Metal-Free Phthalocyanine. Chemphyschem. 2015 Dec 21;16(18):3992-6. doi: 10.1002/cphc.201500386. Epub 2015 Oct 20. PMID: 26346288.
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Chemphyschem. 2015 Dec 21;16(18):3992-6. doi: 10.1002/cphc.201500386. Epub 2015 Oct 20.

Investigation of the Qx -Qy Equilibrium in a Metal-Free Phthalocyanine.

Chemphyschem : a European journal of chemical physics and physical chemistry

Yannick Baeten, Eduard Fron, Christian Ruzié, Yves Henri Geerts, Mark Van Der Auweraer

Affiliations

  1. Department of Chemistry, Division of Molecular Imaging and Photonics, KULeuven, Celestijnenlaan, 200F, Heverlee, Belgium.
  2. Department of Chemistry, Laboratory of Polymer Chemistry, Université Libre de Bruxelles, Chimie des Polymères, CP 206/01, Campus de la Plaine, Brussels, Belgium.
  3. Department of Chemistry, Division of Molecular Imaging and Photonics, KULeuven, Celestijnenlaan, 200F, Heverlee, Belgium. [email protected].

PMID: 26346288 DOI: 10.1002/cphc.201500386

Abstract

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.

© 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Keywords: chromophores; fluorescence spectroscopy; photophysics; phthalocyanines; pump probe

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