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

Autor(es):Mostrar menos -

Soares-Paulino, Antonio A. ^{[1, 2]} ; Giroldo, Lilian ^[1] ; Celante, Gizele ^[1] ; Oliveira, Elisabete ^{[3, 2]} ; Santos, Sergio M. ^{[4, 5]} ; Mendes, Ricardo F. ^{[4, 5]} ; Paz, Filipe A. Almeida ^{[4, 5]} ; Fioroto, Alexandre M. ^[1] ; Oliveira, V, Pedro ; Serrano, Silvia H. P. ^[6] ; Lodeiro, Carlos ^{[3, 2]} ; Dos Santos, Alcindo A. ^[6]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Inst Chem, Dept Fundamental Chem, Av Prof Lineu Prestes 748, BR-05508000 Sao Paulo, SP - Brazil

^[2] Univ Nova Lisboa, Fac Ciencias & Tecnol, Dept Quim, LAQV REQUIMTE, BIOSCOPE Grp, P-2829516 Lisbon - Portugal

^[3] Proteomass Sci Soc, Rua Inventores, Madan Pk, P-2829516 Caparica - Portugal

^[4] Univ Aveiro, Dept Chem, Campus Santiago, P-3810193 Aveiro - Portugal

^[5] Univ Aveiro, CICECO, Campus Santiago, P-3810193 Aveiro - Portugal

^[6] Oliveira, Pedro, V, Univ Sao Paulo, Inst Chem, Dept Fundamental Chem, Av Prof Lineu Prestes 748, BR-05508000 Sao Paulo, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: DYES AND PIGMENTS; v. 160, p. 208-216, JAN 2019.
• Citações Web of Science: 2

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