Rare Earth Complexes as Luminescent Chemosensors for Anions

4 Rare Earth Complexes as Luminescent Chemosensors for Anions 

Anions, such as fluoride, chloride, and phosphate, play critical roles in a range of biological processes and are implicated in a number of diseased states, ranging from fluorosis to cystic fibrosis [41]. Therefore, the exploitation of new luminescent chemosensors for anions is very important. The main design approach for lanthanide complexes as luminescent chemosensors for anions is to utilize the specific interaction between the anions and the lanthanide ion to realize the detection of the anions. 

Structure of anion sensors Eu-19-Eu-25 published by Parker s group. 

In addition, Qian and coworkers reported a luminescent MOF, Tb(L31) G (Tb-31 L31 = benzene-1,3,5-tricarboxylate, G = guest solvent) for the recognition of fluoride anion [52], MOF Tb-31 was immersed in methanolic solutions of NaX (X = F , CP, and Br ) 

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