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

Different 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...

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Bibliographic Details
Published in:Tetrahedron 2013-12, Vol.69 (48), p.10361-10368
Main Authors: Vinš, Petr, Vermachová, Martina, Drašar, Pavel, del Barrio, Melisa, Jarne, Carmen, Cebolla, Vicente L., de Cózar, Abel, Zangi, Ronen, Cossío, Fernando P.
Format: Article
Language:English
Subjects:
Agglomeration
Apigenin
Asphericity
Chemical compounds
Dendrimers
Evolution
Fluorescence
Photophysical properties
Quantum yield
Spectra
Tetrahedrons
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Summary:Different 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. [Display omitted]
ISSN:0040-4020
1464-5416
DOI:10.1016/j.tet.2013.10.002