期刊
JOURNAL OF PHYSICAL CHEMISTRY A
卷 114, 期 12, 页码 4163-4168出版社
AMER CHEMICAL SOC
DOI: 10.1021/jp9119183
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资金
- Fondazione Cariplo
We have investigated the photoluminescence properties of porphyrin-based erbium and gadolinium complexes at different levels of halogen substitution. Both the intensity and the decay time of the erbium near-infrared emission correlate with the degree of the halogenation. Conversely, no clear correlation is found with the triplet-state energy levels nor with the intensity of the residual visible emission. Such findings confirm that the key role ill the low efficiency of the near-infrared emission is played by the nonradiative quenching of the erbium emitting level due to the vibrational modes of the surrounding C-H bonds.
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