Selective Recognition of Chloride Anion in Water.,Organic Letters

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Selective Recognition of Chloride Anion in Water.
Organic Letters ( IF 4.9 ) Pub Date : 2020-06-04 , DOI: 10.1021/acs.orglett.0c01722
Yixin Chen ₁ , Guangcheng Wu ₁ , Liang Chen ₁ , Lu Tong ₁ , Ye Lei ₁ , Libo Shen ₁ , Tianyu Jiao ₁ , Hao Li ₁

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A tricationic cage was synthesized via click chemistry. The cage has a preorganized cavity, which is surrounded by six relatively acidic C–H bonds. In organic solvent, the cage can recognize a variety of anions, among which the Cl^– anion has the highest binding affinity due to size selectivity. The cage is also able to selectively recognize the Cl^– anion in water, even though the binding affinity is just moderate.

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