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

Author(s):Show less -

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]

Affiliation

^[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

• Document type: Journal article
• Source: DYES AND PIGMENTS; v. 160, p. 208-216, JAN 2019.
• Web of Science Citations: 2

Abstract

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)

• FAPESP's process: 16/09579-0 - Synthesis of Organic Selenides and Tellurides for Detection and Interception of Endogenous Oxidants
• Grantee: Alcindo Aparecido dos Santos
• Support Opportunities: Regular Research Grants