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

Autor(es)

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

Afiliação do(s) autor(es)

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

• Tipo de documento: Artigo Científico
• Fonte: NEW JOURNAL OF CHEMISTRY; v. 42, n. 23, p. 18541-18549, DEC 7 2018.
• Citações Web of Science: 9

Resumo

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)

• Processo FAPESP: 14/50906-9 - INCT 2014: em Materiais Complexos Funcionais (INOMAT)
• Beneficiário: Fernando Galembeck
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 13/22127-2 - Desenvolvimento de novos materiais estratégicos para dispositivos analíticos integrados
• Beneficiário: Lauro Tatsuo Kubota
• Modalidade de apoio: Auxílio à Pesquisa - Temático