A new chemosensor based on tellurium-rhodamine B (TRB) for the fast and selective detection of Hg²⁺ in aqueous medium was designed and synthetized in only two steps from a symmetrical organic telluride and rhodamine B. The structure of TRB was determined by RMN, HRMS and IR and its photophysical properties were determined in MeCN/H₂O 75:25 v/v. TRB is able to detect Hg²⁺ in solutions diluted until 1.71 μmol/L and containing until 75% of water in it. In the presence of Hg²⁺, TRB presents an intense pink color with maximum absorption in 558 nm (log ε = 4.93) and a strong fluorescence emission with maximum intensity in 582 nm (Φ = 0.17). The detection of Hg²⁺ by TRB occurs by the oxidation of the tellurium promoted by Hg²⁺, where a redox mechanism was proposed. Even the detection of Hg²⁺ occurring by the oxidation of tellurium, TRB presented a high selectivity for Hg²⁺, even when several ROS (H₂O₂, KNO₂, NaOCl, NaONOO e KO₂) were submitted to the screening.

基于碲-若丹明B（A新化学传感器TRB），用于快速和选择性检测汞²⁺在水性介质中的设计和从对称碲化有机仅在两个步骤synthetized和罗丹明B的结构TRB由RMN确定在MeCN / H ₂ O 75:25 v / v中测定HRMS和IR及其光物理性质。TRB能够检测稀释到1.71μmol/ L的溶液中的Hg ²⁺，溶液中的水含量达到75％。存在Hg ^2+时，TRB呈现强烈的粉红色，并在558 nm处具有最大吸收（对数 ε = 4.93）和强烈的荧光发射，最大强度在582 nm（Φ= 0.17）。汞的检测²⁺通过TRB由汞促进了碲的氧化发生²⁺，其中提出了一种氧化还原机制。即使通过碲氧化而检测到Hg 2 ⁺，TRB仍具有很高的Hg ²⁺选择性，即使将几种ROS（H ₂ O ₂，KNO ₂，NaOCl，NaONOO e KO ₂）提交了筛选。