A highly sensitive luminescent ratiometric thermometer based on europium(III) and terbium(III) benzoylacetonate complexes chemically bonded to ethyldiphenylphosphine oxide functionalized polydimethylsiloxane

Author(s)

Galico, Diogo Alves ^[1] ; Mazali, Italo Odone ^[1] ; Sigoli, Fernando Aparecido ^[1]

Affiliation

^[1] Univ Campinas UNICAMP, Inst Chem, Lab Funct Mat, POB 6154, BR-13083970 Sao Paulo - Brazil

• Document type: Journal article
• Source: NEW JOURNAL OF CHEMISTRY; v. 42, n. 23, p. 18541-18549, DEC 7 2018.
• Web of Science Citations: 9

Abstract

This work reports on a ratiometric optical temperature probe consisting of a pdms-eddpo(1%)-{[}Tb0.90Eu0.10(bzac)(3)](0.25%) membrane where lanthanide(iii) complexes are chemically bonded to ethyldiphenylphosphine oxide functionalized polydimethylsiloxane. The ratiometric luminescent temperature probe shows a maximum relative thermal sensitivity of 11.05% K-1 at 203 K, being one of the most sensitive lanthanide systems reported so far. Besides that, the operational range of the ratiometric probe is 158-248 K, where few systems have high sensitivity. Energy transfer is evident from terbium(iii) to europium(iii) contributing to the high relative thermal sensitivity of the systems. The optical probe is reversible showing a temperature uncertainty smaller than 0.08 K in the operational range. (AU)

• FAPESP's process: 14/50906-9 - INCT 2014: in Functional Complex Materials
• Grantee: Fernando Galembeck
• Support Opportunities: Research Projects - Thematic Grants
• 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