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Size and branching effects on the fluorescence of benzylic dendrimers possessing one apigenin fluorophore at the core

AuthorsVinš, Petr; Vermachová, Martina; Drašar, Drasar; Barrio Redondo, Melisa del; Jarne, Carmen; Cebolla, Vicente L. ; Cózar, Abel de; Zangi, Ronen
Photophysical properties
Quantum yield
Issue Date2-Dec-2013
CitationTetrahedron 69(48): 10361-10368 (2013)
AbstractDifferent generations of dendrimers incorporating one fluorescent core of apigenin and three Fréchet benzylic dendrons have been prepared. The chief geometric features of these dendrimers have been obtained by Molecular Dynamics simulations. These computational data suggest that the asphericities of dendrimers belonging to the third and fourth generations are considerably larger than those associated with lower radii of gyration. Fluorescence spectra of high generation dendrimers evolve along time and quantum yields show an appreciable lowering for the fourth generation dendrimer. All these data suggest aggregation phenomena and lower quantum yields for nonspheric dendrimers in solution.
Publisher version (URL)http://dx.doi.org/10.1016/j.tet.2013.10.002
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