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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Optical Temperature Sensors Based On Europium(III) Beta-Diketonate Complexes Chemically Bonded To Functionalized Polydimethylsiloxane

Full text
Author(s):
Gaspar, Rafael D. L. [1] ; Fortes, Paula R. [1] ; Mazali, Italo O. [1] ; Sigoli, Fernando A. [1] ; Raimundo, Ivo M. [1]
Total Authors: 5
Affiliation:
[1] Univ Estadual Campinas, Inst Chem, BR-13080970 Campinas, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: CHEMISTRYSELECT; v. 3, n. 37, p. 10491-10501, OCT 9 2018.
Web of Science Citations: 2
Abstract

New luminescent temperature probes were synthesized based on the dispersion of the europium(III) {[}Eu(tta)(3)(H2O)(2)] complex (tta=thenoyltrifluoroacetonate), and the covalent bond of europium(III) {[}Eu(tta)(3)(adppo)(H2O)] and {[}Eu(tta)(3)(adppo)(2)] (adppo=allyldiphenylphosphine oxide) complexes by the hydroslylilation reaction between the allyl group and the hydride terminal polydimethylsiloxane (PDMS). Phosphine oxide coordination to the europium(III) ion increases the lifetime values and changes the emission profile to a more symmetrical europium(III) chemical environment. The membranes shows a decrease in lifetime values with the increase of temperature, and the dynamic range of the luminescent membranes shifts to higher temperatures by successive substitution of water molecules for the phosphine oxide ligand. Sensitivities of 6.76, 7.80 and 8.35 S C-1 were obtained for the membranes containing the {[}Eu(tta)(3)(H2O)(2)], {[}Eu(tta)(3)(adppo)(H2O)] and {[}Eu(tta)(3)(adppo)(2)] complexes, respectively. Low oxygen cross sensitivity are observable in the membranes containing the coordinated adppo molecule, allowing their use in multiparametric sensors. (AU)

FAPESP's process: 13/22127-2 - Development of novel materials strategic for integrated analytical devices
Grantee:Lauro Tatsuo Kubota
Support Opportunities: Research Projects - Thematic Grants
FAPESP's process: 14/50906-9 - INCT 2014: in Functional Complex Materials
Grantee:Fernando Galembeck
Support Opportunities: Research Projects - Thematic Grants
FAPESP's process: 08/57808-1 - National Institute of Advanced Analytical Science and Technology
Grantee:Celio Pasquini
Support Opportunities: Research Projects - Thematic Grants