A New Reverse PET Chemosensor and Its Chelatoselective Aromatic Cadmiation

Abstract

[reaction: see text]. A new fluorescent chemosensor, anthryl tetra acid, was synthesized and showed large fluorescence quenching effects in 100% aqueous solution with metal ions via photoinduced electron transfer (PET). Chelatoselective fluorescence perturbation was observed with Cd(II) and resulted from electrophilic aromatic cadmiation.

A novel colorimetric and fluorescent sensor for fluoride and pyrophosphate based on fluorenone signaling units

“…It is also important to note that F − , CH 3 COO − and HP 2 O 7 3− evidenced a slightly red-shifted fluorescence quenching and Cl − , Br − , and H 2 PO 4 − evidenced enhancements in fluorescence. This unique fluorescence behaviour implied that the naphthalene moiety might be directly involved in the bonding interaction with the ions along with the formation of complexes [25].…”

Environmental remediation and monitoring of cadmium

“…In general, problems with the fabrication of chemosensors, namely, time-consuming and complicated syntheses, as well as high capital and operating costs, need to be solved. Different types of receptor have been employed for several metal ions, and they can be classified based on their molecular size (i.e., small molecules and macromolecules) [42][43][44][45][46][47][48][49][50][51][52][53][54][55].…”

“…Anthracene-based compounds are widely used for fluorescent sensors of cadmium ions [44][45][46]. Yoon et al [44] and Gunnlaugsson et al [46] synthesized anthracene derivatives with iminomethyl diacetic acid moiety at 9,10-and 1,8-positions for selective fluorescent cadmium chemosensors (Table 1).…”

A simple but highly selective and sensitive fluorescence reporter for toxic CdII ion via excimer formation

“…Over the last few decades, considerable effort has been devoted for the development of heavy metal ion sensors, because of their essential and/or venomous roles, for one species [1][2][3][4][5][6][7][8]. Over other metal ions, Cadmium (Cd) is an essential trace element for human being and has important applications in the areas of environmental and biological analysis.…”