Biguanides, anion receptors and sensors. Issue 72 (29th August 2017)

• Record Type: Journal Article
• Authors: Pushina, Mariia; Anzenbacher, Pavel
• Is Part Of: Chemical communications. Volume 53:Issue 72(2017)
• Page Start: 10074
• Page End: 10077
• Publication Date: 2017-08-29
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1039/c7cc05012g
• Languages: English
• ISSNs: 1359-7345

Abstract

Abstract : Biguanides are strong bases (p K a > 10), their protonated forms bind anions and may therefore act as receptors for anions. Abstract : Biguanides are strong bases (p K a > 10), their protonated forms bind anions and may therefore act as receptors for anions. We report on easy-to-make anion receptors and fluorescence-based sensors utilizing the biguanide moieties that respond to the presence of anions with a change in fluorescence. The observed changes in fluorescence are anion-specific and even though the biguanide receptors are cross-reactive, these sensors may be used to identify various anions (halides, carboxylates, phosphates). Paper-based analytical arrays were used to assess the discriminatory ability of the sensors in the qualitative and quantitative analysis of multiple anions.