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Improved analysis of excited state proton transfer kinetics by the combination of standard and convolution methods

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Abstract

We wish to report a powerful methodology for analysis and interpretation of complex fluorescence decays and other kinetic data, based on the addition of convolution analysis to standard (individual and global) analysis. The method was applied to cases involving excited state proton transfer of flavylium salts in water, in water—1,4-dioxane mixtures and in micellar solutions of sodium dodecyl sulfate (SDS). The results clearly support the proposal of the intermediacy of a proton—base geminate pair in environments other than water.

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Authors and Affiliations

  1. Centro de Química Estrutural, Instituto Superior Técnico, Universidade Técnica de Lisboa, 1049-001, Lisbon, Portugal

    Adilson A. Freitas & António A. L. Maçanita

  2. Instituto de Química and the USP Research Consortium for Photochemical Technology, Universidade de São Paulo, CP 26077, São Paulo, 05513-970, Brazil

    Frank H. Quina

Authors
  1. Adilson A. Freitas
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  2. António A. L. Maçanita
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  3. Frank H. Quina
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Corresponding authors

Correspondence to Adilson A. Freitas or António A. L. Maçanita.

Additional information

Electronic supplementary information (ESI) available: Formalisms of convolution kinetics in water, water-dioxane mixtures and SDS micelle solutions and procedures for deriving specific rate constants.

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Freitas, A.A., Maçanita, A.A.L. & Quina, F.H. Improved analysis of excited state proton transfer kinetics by the combination of standard and convolution methods. Photochem Photobiol Sci 12, 902–910 (2013). https://doi.org/10.1039/c3pp25445c

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