Two 1530-nm emitting co-polymers have been synthesized by incorporating differently substituted erbium-porphyrin complexes into the conjugated backbone of a polyaryleneethynylene structure. While the near infrared (NIR) emission exhibits the typical narrow width of lanthanide ions, the absorption and excitation spectra are quite broad and extend in the red range more than in any other organolanthanide molecule. This indicates that highly -conjugated systems are effectively formed. For both polymers, however, the quantum efficiency is as low as in the isolated complexes, which suggests that the increased conjugation does not influence the intramolecular transfer to the erbium ion.
Optical properties of novel Er-containing co-polymers with emission at 1530 nm
RICCI, ANTONELLA;LO STERZO, CLAUDIO
2006-01-01
Abstract
Two 1530-nm emitting co-polymers have been synthesized by incorporating differently substituted erbium-porphyrin complexes into the conjugated backbone of a polyaryleneethynylene structure. While the near infrared (NIR) emission exhibits the typical narrow width of lanthanide ions, the absorption and excitation spectra are quite broad and extend in the red range more than in any other organolanthanide molecule. This indicates that highly -conjugated systems are effectively formed. For both polymers, however, the quantum efficiency is as low as in the isolated complexes, which suggests that the increased conjugation does not influence the intramolecular transfer to the erbium ion.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
