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Quenching effect of C-H bond in long lived NIR luminescent erbium complexes

Published online by Cambridge University Press:  19 June 2013

Laurent Divay ,
Christophe Galindo ,
Françoise Soyer ,
Evelyne Chastaing ,
Renato Bisaro  and
Pierre Le Barny
Laurent Divay
Affiliation:
THALES R&T, 1 avenue Augustin Fresnel, 91767 Palaiseau Cedex, France
Christophe Galindo
Affiliation:
THALES R&T, 1 avenue Augustin Fresnel, 91767 Palaiseau Cedex, France
Françoise Soyer
Affiliation:
THALES R&T, 1 avenue Augustin Fresnel, 91767 Palaiseau Cedex, France
Evelyne Chastaing
Affiliation:
THALES R&T, 1 avenue Augustin Fresnel, 91767 Palaiseau Cedex, France
Renato Bisaro
Affiliation:
THALES R&T, 1 avenue Augustin Fresnel, 91767 Palaiseau Cedex, France
Pierre Le Barny
Affiliation:
THALES R&T, 1 avenue Augustin Fresnel, 91767 Palaiseau Cedex, France
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Abstract

Erbium excited state deactivation is studied for two fluorinated complexes based on N-(P,P-ditetrafluorophosphinoyl-P,P-ditetrafluorophenyl phosphinimidates and N-(P,P-dipentafluoro phosphinoyl)-P,P-dipentafluorophenyl phosphinimidates ligands. We show that the substitution of a fluorine atom in para-position by an hydrogen atom on each phenyl ring of the perfluorinated organic ligand results in a decrease in near infrared luminescence lifetimes from 800 µs to 70 µs when measured under vacuum on sublimated powder samples. These experiments show that the introduction of C-H bonds, although outside the first coordination sphere of the erbium ion, can still induce a one order of magnitude decrease in its excited state lifetime. The found lifetime however is still longer than most reported partially fluorinated complexes, which opens the way for new functionalized complexes.

Keywords

Erluminescenceorganometallic
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1571: Symposium RR – Lanthanide Nanomaterials for Imaging, Sensing and Optoelectronics , 2013 , mrss13-1571-rr03-11
Copyright
Copyright © Materials Research Society 2013 

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