Publication Type Journal Article
Title A Europium(III) Complex Embedded in a Polysulfone Host Matrix: A Flexible Film with Temperature-Responsive Ratiometric Behaviour
Authors Mani Outis João P. Leal Joao Avo Bernardo Monteiro Claudia C. L. Pereira
Groups IOARC
Journal CHEMPLUSCHEM
Year 2020
Month December
Volume 85
Number 12
Pages 2629-2635
Abstract An emissive europium(III) complex [C(2)mim][Eu(fod)(4)] (1; C(2)mim=1-ethyl-3-methyl-imidazolium; fod=1,1,1,2,2,3,3-heptafluoro-7,7-dimethyloctane-4,6-dionate) was prepared. The complex shows ratiometric thermal behaviour up to 155 degrees C. These unusual temperature-dependent properties arise from a solid-solid phase transition that promotes increased contact between the anion and the cation, affecting the emission profile of the emissive anion in two different ratiometric relations. A ultrabright and flexible emissive photopolymer film was obtained using polysulfone (PSU) as the host matrix of 10 \% (w/w) of 1, that also induced changes on the lanthanide emissive profile with temperature. A temperature-responsive luminescent film 1/PSU is sensitivr to heating between 100 and 155 degrees C. Also, the emission lifetime of 1 was not affected by confinement in PSU, while its emission quantum yield was reduced from 82 to 59 \%.
DOI http://dx.doi.org/10.1002/cplu.202000710
ISBN
Publisher
Book Title
ISSN 2192-6506
EISSN
Conference Name
Bibtex ID ISI:000603402700013
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