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Dipeptide Crystals as Excellent Permselective Materials: Sequential Exclusion of Argon, Nitrogen, and Oxygen

Authors

  • Rui V. Afonso,

    1. Instituto de Biologia Molecular e Celular, Rua do Campo Alegre 823, 4150-180 Porto (Portugal), Fax: (+351) 226-099-157
    2. Instituto de Ciências Biomédicas Abel Salazar, Largo Prof. Abel Salazar 2, 4099-003 Porto (Portugal)
    3. Laboratory for Process, Environmental, and Energy Engineering, Faculdade de Engenharia da Universidade do Porto, Rua Dr. Roberto Frias, s/n 4200-465 Porto (Portugal)
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  • Joana Durão,

    1. Instituto de Biologia Molecular e Celular, Rua do Campo Alegre 823, 4150-180 Porto (Portugal), Fax: (+351) 226-099-157
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  • Adélio Mendes Prof. Dr.,

    1. Laboratory for Process, Environmental, and Energy Engineering, Faculdade de Engenharia da Universidade do Porto, Rua Dr. Roberto Frias, s/n 4200-465 Porto (Portugal)
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  • Ana M. Damas Prof. Dr.,

    1. Instituto de Biologia Molecular e Celular, Rua do Campo Alegre 823, 4150-180 Porto (Portugal), Fax: (+351) 226-099-157
    2. Instituto de Ciências Biomédicas Abel Salazar, Largo Prof. Abel Salazar 2, 4099-003 Porto (Portugal)
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  • Luís Gales Prof. Dr.

    1. Instituto de Biologia Molecular e Celular, Rua do Campo Alegre 823, 4150-180 Porto (Portugal), Fax: (+351) 226-099-157
    2. Instituto de Ciências Biomédicas Abel Salazar, Largo Prof. Abel Salazar 2, 4099-003 Porto (Portugal)
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  • This work is supported by Fundação para a Ciência e Tecnologia (project PTDC/CTM/64191/2006) and by a PhD scholarship to R.A. (SFRH/BD/43821/2008).

Abstract

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Selektive Poren: Mikroporöse Dipeptidkristalle können als einkristalline Membranen eingesetzt werden. Permeationsexperimente mit N2, O2 und Ar, den Hauptkomponenten der Luft, ergeben hohe Permeabilitäten und ausgezeichnete Selektivitäten (siehe Bild). Kristalle von L-Alanyl-L-alanin zeigen extrem hohe O2/N2-Selektivitäten.

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