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    Energy transfer in Aminonaphthalimide-BODIPY dyads upon one and two photons excitation

    • Autor
      Collado-Martín, DanielAutoridad Universidad de Málaga; Vida-Pol, YolandaAutoridad Universidad de Málaga; Nájera-Albendín, FranciscoAutoridad Universidad de Málaga; Pérez-de-Inestrosa-Villatoro, EzequielAutoridad Universidad de Málaga
    • Fecha
      2014-07-03
    • Palabras clave
      Transferencia de energia; Fotoquímica
    • Resumen
      BODIPY dyes are nowadays widely commercialized chromophores that have attracted immense interest as versatile tools in biological chemistry [1]. However, the generally very small Stokes shifts of BODIPY dyes may cause re-absorption or effects from excitation-light scattering, which is a potential drawback for their application, especially in bioimaging. One strategy to bypass this problem is the integration of BODIPY dyes as acceptors in bi- or multichromophoric arrays, some of them qualifying as energy transfer cassettes where donor and acceptor units are electronically non-conjugated [2]. In this communication we present a series of aminonaphthalimide–BODIPY energy transfer cassettes that shown very fast and efficient BODIPY fluorescence sensitization [3]. This was observed upon one- and two-photon excitation, which extends the application range of the investigated bichromophoric dyads in terms of accessible excitation wavelengths. In comparison with the direct excitation of the BODIPY chromophore, the two-photon absorption cross-section of the dyads is significantly incremented by the presence of the aminonaphthalimide donor.The applicability of the new probes in the one- and two-photon excitation mode was demonstrated both in solution and supported on silica nanoparticles, in a proof-of-principle approach in the fluorescence imaging of HeLa cells.
    • URI
      http://hdl.handle.net/10630/7770
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    Ficheros
    OC-Daniel_Collado_IVJIF_2014.pdf (1.118Mb)
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    REPOSITORIO INSTITUCIONAL UNIVERSIDAD DE MÁLAGA
    REPOSITORIO INSTITUCIONAL UNIVERSIDAD DE MÁLAGA
     

     

    REPOSITORIO INSTITUCIONAL UNIVERSIDAD DE MÁLAGA
    REPOSITORIO INSTITUCIONAL UNIVERSIDAD DE MÁLAGA