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Oxidation of tellurium dyes induced by mercury: More insights on the naked-eye and fluorescent Hg2+ detection

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Soares-Paulino, Antonio A. ; Giroldo, Lilian ; Celante, Gizele ; Oliveira, Elisabete ; Santos, Sergio M. ; Mendes, Ricardo F. ; Paz, Filipe A. Almeida ; Fioroto, Alexandre M. ; Oliveira, Pedro, V ; Serrano, Silvia H. P. ; Lodeiro, Carlos ; Dos Santos, Alcindo A.
Número total de Autores: 12
Tipo de documento: Artigo Científico
Fonte: DYES AND PIGMENTS; v. 160, p. 9-pg., 2019-01-01.
Resumo

A new fluorescent probe based on Tellurium-Rhodamine (TR) was designed, synthetized and fully characterized by H-1 NMR, C-13 NMR, Te-125 NMR, HRMS, IR and single crystal X-ray diffraction. A mechanism of Hg2+ detection, based on the oxidation of tellurium by Hg2+ was observed and fully understood. The new monomer chemosensor TR shows a high fluorescent quantum yield Phi = 0.41, excellent selectivity and good sensibility towards Hg2+, with a limit of detection of 2.95 mu mol/L. (AU)

Processo FAPESP: 16/09579-0 - Síntese de Selenetos e Teluretos Orgânicos para Detecção e Intercepção de Entidades Oxidantes Endógenas
Beneficiário:Alcindo Aparecido dos Santos
Modalidade de apoio: Auxílio à Pesquisa - Regular