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Photoacoustic and luminescence characterization of nitrogen heterocyclic aromatic UV-MALDI matrices in solution

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Abstract

A group of nitrogen heterocyclic aromatic compounds used, among others, as UV-MALDI matrices was studied. By using spectroscopic, luminescence and photoacoustic techniques, as well as time resolved phosphorescence for singlet oxygen production determination, the behaviour of 9-aminoacridine (9AA), 3-aminoquinoline (3AQ), 2-(2-aminoethylamino)-5-nitropyridine (AAN) and 3,4-dihydro-7-methoxy-1-methyl-9H-pyrido[3,4-b] indole (harmaline, HLA) in acetonitrile solutions is described. The results show that for these compounds radiationless processes that release prompt heat to the media are a quite important deactivation mechanism.

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Authors and Affiliations

  1. CIHIDECAR-CONICET, Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón II, 3 Ciudad Universitaria, 1428, Buenos Aires, Argentina

    Gabriela Petroselli & Rosa Erra-Balsells

  2. Centro de Investigaciones Ópticas-CIOp (CONICET-CIC) and Universidad Nacional de La Plata, Casilla de Correo 3, 1897, Gonnet, Argentina

    Pedro David Gara & Gabriel M. Bilmes

Authors
  1. Gabriela Petroselli
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  2. Rosa Erra-Balsells
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  3. Pedro David Gara
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  4. Gabriel M. Bilmes
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Correspondence to Rosa Erra-Balsells or Gabriel M. Bilmes.

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This paper is for the special issue in honour of Kurt Schaffner on the occasion of his 80th birthday.

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Petroselli, G., Erra-Balsells, R., David Gara, P. et al. Photoacoustic and luminescence characterization of nitrogen heterocyclic aromatic UV-MALDI matrices in solution. Photochem Photobiol Sci 11, 1062–1068 (2012). https://doi.org/10.1039/c2pp05388h

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