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American Chemical Society, The Journal of Physical Chemistry A, 12(114), p. 4163-4168, 2010

DOI: 10.1021/jp9119183

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Effects of Progressive Halogen Substitution on the Photoluminescence Properties of an Erbium-Porphyrin Complex

Journal article published in 2010 by Roberto Pizzoferrato, Francin,i R., Roberto Francini, Serena Pietrantoni, Roberto Paolesse ORCID, Mando,j F., Federica Mandoj, Am Monguzzi, Francesco Meinardi
This paper was not found in any repository; the policy of its publisher is unknown or unclear.
This paper was not found in any repository; the policy of its publisher is unknown or unclear.

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Abstract

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 in 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. © 2010 American Chemical Society.