A Highly Stable Yttrium Organic Framework as a Host for Optical Thermometry and D2O Detection

Autor(es)

Chamberlain, Thomas W. ; Perrella, Rafael, V ; Oliveira, Tamires M. ; de Sousa Filho, Paulo C. ; Walton, Richard, I

• Tipo de documento: Artigo Científico
• Fonte: CHEMISTRY-A EUROPEAN JOURNAL; v. 28, n. 19, p. 8-pg., 2022-03-04.

Resumo

The yttrium organic framework (Y0.89Tb0.10Eu0.01)(6)(BDC)(7)(OH)(4)(H2O)(4) (BDC=benzene-1,4-dicarboxylate) is hydrothermally stable up to at least 513 K and thermally stable in air in excess of 673 K. The relative intensities of luminescence of Tb3+ and Eu3+ are governed by Tb3+-to-Eu3+ phonon-assisted energy transfer and Tb3+-to-ligand back transfer and are responsible for the differing temperature-dependent luminescence of the two ions. This provides a ratiometric luminescent thermometer in the 288-573 K temperature range, not previously seen for MOF materials, with a high sensitivity, 1.69 +/- 0.04 % K-1 at 523 K. In aqueous conditions, loosely bound H2O can be replaced by D2O in the same material, which modifies decay lifetimes to yield a quantitative luminescent D2O sensor with a useful sensitivity for practical application. (AU)

• Processo FAPESP: 20/10518-0 - Nanopartículas inorgânicas como novas ferramentas para sensoriamento óptico em nanoescala
• Beneficiário: Paulo Cesar de Sousa Filho
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 18/08334-9 - Novos materiais avançados para aplicações em sensoriamento: um projeto colaborativo sobre a caracterização estrutural e espectroscópica de novos sólidos à base de terras raras
• Beneficiário: Paulo Cesar de Sousa Filho
• Modalidade de apoio: Auxílio à Pesquisa - Regular