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A Dendritic Antenna for Near-Infrared Emission of Nd3+ Ions
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2001
Year
Amide GroupsPhotochemistryPhysicsNatural SciencesSpectroscopyAtomic Emission SpectroscopyDansyl GroupsSpectra-structure CorrelationAtomic PhysicsExcitation Energy TransferDendritic AntennaChemistryIon EmissionPhotophysical PropertyLight-harvesting DendrimerBiophysics
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.