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Spectroscopic Characterization of Solvent-Mediated Folding in Dicarboxylate Dianions

Authors

  • Torsten Wende,

    1. Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4–6, 14195 Berlin (Germany)
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  • Marius Wanko,

    1. Nano-Bio Spectroscopy Group and ETSF Scientific Development Centre, Departamento de Física de Materiales, Universidad del País Vasco, Centro de Física de Materiales CSIC-UPV/EHU-MPC and DIPC, Av. Tolosa 72, 20018 San Sebastián (Spain)
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  • Ling Jiang,

    1. Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4–6, 14195 Berlin (Germany)
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  • Gerard Meijer,

    1. Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4–6, 14195 Berlin (Germany)
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  • Knut R. Asmis,

    Corresponding author
    1. Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4–6, 14195 Berlin (Germany)
    • Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4–6, 14195 Berlin (Germany)
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  • Angel Rubio

    Corresponding author
    1. Nano-Bio Spectroscopy Group and ETSF Scientific Development Centre, Departamento de Física de Materiales, Universidad del País Vasco, Centro de Física de Materiales CSIC-UPV/EHU-MPC and DIPC, Av. Tolosa 72, 20018 San Sebastián (Spain)
    • Nano-Bio Spectroscopy Group and ETSF Scientific Development Centre, Departamento de Física de Materiales, Universidad del País Vasco, Centro de Física de Materiales CSIC-UPV/EHU-MPC and DIPC, Av. Tolosa 72, 20018 San Sebastián (Spain)
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  • We thank the Stichting voor Fundamenteel Onderzoek der Materie (FOM) for beamtime and the staff for support and assistance. This research is funded by the European Community’s Seventh Framework Programme (FP7/2007-2013, grant nr. 226716), the Spanish MEC (FIS2007-65702-C02-01), the “Grupos Consolidados UPV/EHU del Gobierno Vasco” (IT-319-07), and CIC NanoGUNE (grant no. CSD2006-53). L.J. thanks the Alexander von Humboldt Foundation for a postdoctoral scholarship.

Abstract

original image

The relationship between conformational changes of suberate dianions in water clusters and the corresponding spectroscopic characteristics were studied theoretically and by IR spectroscopy (see picture for the charge displacement associated with the excitation of the carboxylate symmetric stretching modes). Folded structures are stabilized by the formation of additional hydrogen bonds between the solvated dianion and H2O molecules and should thus be retained in larger, microhydrated clusters.

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