An anthracene-based fluorescent sensor for sequential detection of zinc and copper ions

A new coumarin based dual functional chemosensor for colorimetric detection of Fe3+ and fluorescence turn-on response of Zn2+

“…However, in presence of Zn 2+ ion, the m/z peak was found to be at 425.10 which correspond to [H 10 L+Zn 2+ +Acetate] + (calculated: 425.02). So, these mass spectra also confirmed the binding nature of H 10 L to Zn 2+ as 1:1 stoichiometry [70][71][72]. …”

Dual sensing performance of a rhodamine-derived scaffold for the determination of Cu2+ and Ce4+ in aqueous media

“…In these systems, the signals were transduced by either opening the spirolactam ring upon metal ion coordination or irreversible chemical reactions induced by metal ions. Several dual ion chemosensors were reported recently, including combinations of Hg 2+ /Au 3+ [46], Al 3+ /H + [47], Cu 2+ /Zn 2+ [48], and Cu 2+ /Al 3+ [49]. However, the development of a highly selective and sensitive dual ion chemosensor with turn-on fluorescence for monitoring Cu 2+ /Ce 4+ remains a significant challenge.…”

Azo Linked Polycyclic Aromatic Hydrocarbons-Based Dual Chemosensor for Cu2+ and Hg2+ Ions

“…Methylmercury, one primary form of organic mercury, it can affect central nervous and endocrine systems and brain [16][17][18][19][20] . Therefore, it is an important issue for the detection of Cu 2+ and Hg 2+ anthracene, pyrene and its derivatives are frequently used in optical sensing because they absorb 4 in the visible region and emit in the green or blue region [28][29][30][31][32] . Therefore, we developed the novel azo linked polycyclic aromatic hydrocarbons based receptors and applied them as the colorimetric/fluorescent chemosensor for Cu 2+ and Hg 2+ ions.…”

“…While each chemosensor showed some advantages such as easy synthesis, high sensitivity, no interference and naked eye detection. Our receptor R1-R3 exhibited a number of attractive analytical features such as high sensitivity, good binding constant, low detection limit, dual sensing methods (naked-eye and fluorescence detection) and selective cation sensing (R1-R3= Cu 2+ & Hg 2+ ) and wide applicability[31][32][33][34][35][36][37][38][39][40]. The fluorescent chemosensor R2 & R3 are easy to prepare with low cost and can be used for analysis of Cu 2+ and Hg 2+ ion living cells.Next, the interaction of R1-R3 with Cu 2+ /Hg 2+ was also investigated in the solid state.When 5 ml of copper chloride and mercury nitrate (1×10 -2 M in H 2 O) solution was added to 5 ml of R1-R3 (2×10 -2 M in CH 3 CN) solution, a precipitate was observed.…”