Bifunctional Temperature and Oxygen Dual Probe Based on Anthracene and Europium Complex Luminescence

Autor(es)

Galico, Diogo Alves ; Mazali, Italo Odone ; Sigoli, Fernando Aparecido

• Tipo de documento: Artigo Científico
• Fonte: INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES; v. 23, n. 23, p. 15-pg., 2022-12-01.

Resumo

In this work, we synthesized a polydimethylsiloxane membrane containing two emitter groups chemically attached to the membrane structure. For this, we attached the anthracene group and the [Eu(bzac)(3)] complex as blue and red emitters, respectively, in the matrix via hydrosilylation reactions. The synthesized membrane can be used as a bifunctional temperature and oxygen ratiometric optical probe by analyzing the effects that temperature changes and oxygen levels produce on the ratio of anthracene and europium(III) emission components. As a temperature probe, the system is operational in the 203-323 K range, with an observed maximum relative sensitivity of 2.06% K-1 at 290 K and temperature uncertainties below 0.1 K over all the operational range. As an oxygen probe, we evaluated the ratiometric response at 25, 30, 35, and 40 degrees C. These results show an interesting approach to obtaining bifunctional ratiometric optical probes and also suggest the presence of an anthracene -> europium(III) energy transfer, even though there is no chemical bonding between species. (AU)

• 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
• Processo FAPESP: 21/06326-1 - Luminescência de íons lantanídeos: uma ferramenta óptica contra falsificações
• Beneficiário: Fernando Aparecido Sigoli
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 14/50906-9 - INCT 2014: em Materiais Complexos Funcionais (INOMAT)
• Beneficiário: Fernando Galembeck
• Modalidade de apoio: Auxílio à Pesquisa - Temático