Efficient visible light sensitisation of water-soluble near-infrared luminescent lanthanide complexes

@inproceedings{Werts2000EfficientVL,
  title={Efficient visible light sensitisation of water-soluble near-infrared luminescent lanthanide complexes},
  author={Martinus H V Werts and Jan W. Verhoeven and Johannes W. Hofstraat},
  year={2000}
}
Fluorexon (4′,5′-bis[N,N-bis(carboxymethyl)aminomethyl]fluorescein) forms stable, water-soluble complexes with lanthanide ions. The complexes with neodymium(III), erbium(III) and ytterbium(III) display sensitised near-infrared lanthanide luminescence upon excitation of the fluorexon with visible light. The photosensitisation efficiency is very high (0.5–1.0) as a result of lanthanide-enhanced intersystem crossing in the sensitising chromophore and rapid intracomplex energy transfer. The overall… CONTINUE READING