Dendrimers as Nd3+ ligands: Effect of Generation on the Efficiency of the Sensitized Lanthanide Emission

Authors

  • Prof. Zeena S. Pillai,

    1. Department of Chemistry, School of Arts and Sciences, Amrita VishwaVidyapeetham, Amritapuri, Clappana P.O., Kollam-690525, Kerala (India)
    2. Department of Chemistry “G. Ciamician”, University of Bologna, Via Selmi 2, 40126, Bologna (Italy)
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  • Prof. Paola Ceroni,

    1. Department of Chemistry “G. Ciamician”, University of Bologna, Via Selmi 2, 40126, Bologna (Italy)
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  • Manja Kubeil,

    1. Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research, PF 510119, 01314 Dresden (Germany)
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  • Dr. Jan-Martin Heldt,

    1. Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research, PF 510119, 01314 Dresden (Germany)
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  • Dr. Holger Stephan,

    Corresponding author
    1. Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research, PF 510119, 01314 Dresden (Germany)
    • Holger Stephan, Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research, PF 510119, 01314 Dresden (Germany)

      Giacomo Bergamini, Department of Chemistry “G. Ciamician”, University of Bologna, Via Selmi 2, 40126, Bologna (Italy)

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  • Dr. Giacomo Bergamini

    Corresponding author
    1. Department of Chemistry “G. Ciamician”, University of Bologna, Via Selmi 2, 40126, Bologna (Italy)
    2. Center for Nano Science and Technology @Polimi, Istituto Italiano Tecnologia (IIT), Via Pascoli 70/3, 20133, Milano (Italy)
    • Holger Stephan, Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research, PF 510119, 01314 Dresden (Germany)

      Giacomo Bergamini, Department of Chemistry “G. Ciamician”, University of Bologna, Via Selmi 2, 40126, Bologna (Italy)

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Abstract

We have designed two novel dendrimers with cyclam cores with appended poly(amido amine) (PAMAM) dendrons, decorated at the periphery with four and eight dansyl chromophores, respectively. The photophysical properties of the dendrimers and their Nd3+ complexes have been investigated. The energy-transfer efficiency to the lanthanide ions from these dendrimers has been studied as a function of the generation. It has been observed that an increase in the dendrimer generation as well as the number of amide units enhances the energy transfer to the lanthanide ion.

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