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A Dendritic Antenna for Near-Infrared Emission of Nd3+ Ions

2001; Wiley; Volume: 2; Issue: 12 Linguagem: Inglês

10.1002/1439-7641(20011217)2

1439-7641

Fritz Vögtle, Marius Gorka, Veronica Vicinelli, Paola Ceroni, Mauro Maestri, Vincenzo Balzani,

Synthesis and Properties of Aromatic Compounds

An interior of 18 amide groups and a periphery functionalized with 24 dansyl groups forms a light-harvesting dendrimer which features intense absorption bands in the near-UV spectral region and a strong fluorescence band in the visible region. Upon encapsulation of Nd(3+) ions, the fluorescence of the dansyl groups is quenched and an intense sensitized near-infrared emission of Nd(3+) is observed. The associated energy transfer is shown in the cartoon.