Binding studies of diorganochalcogenides with Hg(II) in solution

Fluorescent Probes Containing Selenium as a Guest or Host

“…Consideration of the strong coordination interaction between chalcogen atoms and Hg 2+ led to the design of a series of Se-containing fluorescent probes for Hg 2+ , exemplified by 52. 86 Probe 52 selectively detects Hg 2+ with an association constant of 0.0152 in the presence of different interfering cations, including Zn 2+ , Cd 2+ , Cu 2+ , Co 2+ , Ni 2+ , Ca 2+ , Na + , K + , and Ag + . It is not possible to summarize work with all of these Se-containing fluorescent probes for Hg 2+ in this review.…”

“…It is not possible to summarize work with all of these Se-containing fluorescent probes for Hg 2+ in this review. 86 Huang et al 87 reported work on the coumarin-Se 2 N-chelating conjugate fluorescent probe 53 for Ag + (Scheme 8). 87 The probe shows only weak fluorescence because of the operation of PET quenching, but it exhibits a highly selective fluorescence turnon response (4-fold enhancement) toward Ag + over other relevant competing metal ions.…”

A BOPHY based fluorescent probe for Hg2+via NTe2 chelation

“…33 As described earlier, mercury has a higher affinity for tellurium and selenium compared to sulfur and the order of chalcogenophilicity of mercury is S < Se < Te. 34,35 Considering these facts, herein, we have developed the first organotellurium-containing BOPHY-based probe for the selective and sensitive detection of Hg 2+ ions with a detection limit of 62 nM.…”

Macrocyclic Se4N2[7,7]ferrocenophane and Se2N[10]ferrocenophane containing benzyl unit: synthesis, complexation, crystal structures, electrochemical and optical properties

“…[5][6][7][8][9] The development of efficient chemosensors for heavy metal ions with biological and environmental interests is an area of intense activity in order to address practical needs, 10,11 such as Cu 2+ and Hg 2+ because of their bioaccumu-lation and toxicity. 12,13 The soft donor atom Se has been proven to coordinate well with late transition and heavy metal cations, [14][15][16][17][18][19][20][21][22] for example, Singh's group reported that Schiff base macrocycles with Se/Te can be good candidates for heavy metal cation sensing, while there exists a contradiction between stability and coordination of the selenium atoms prevented by larger selena Schiff base macrocycles. 14 Our group has embarked on the systematic study of multichannel probes based on macrocyclic polyselena [n]ferrocenophanes with the target to sense different kinds of metal cations.…”