Gold nanoclusters for ratiometric sensing of pH in extremely acidic media. Issue 4 (12th December 2019)

• Record Type: Journal Article
• Authors: Bonanno, Adele; Pérez-Herráez, Irene; Zaballos-García, Elena; Pérez-Prieto, Julia
• Is Part Of: Chemical communications. Volume 56:Issue 4(2020)
• Page Start: 587
• Page End: 590
• Publication Date: 2019-12-12
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1039/c9cc08539d
• Languages: English
• ISSNs: 1359-7345

Abstract

Abstract : AuNCs capped with β-nicotinamide adenine dinucleotide phosphate exhibit an outstanding performance as ratiometric, fluorescent pH sensors in extremely acid media (0.6–2.7) and in the 7.0–9.2 pH range; the nanocluster itself is the fluorophore. Abstract : AuNCs capped with β-nicotinamide adenine dinucleotide phosphate exhibit an outstanding performance as fluorescent pH sensors; specifically they exhibit a high emission in strongly acidic media and linear dependence on pH in extremely acidic media (0.6–2.7) as well as in the 7.0–9.2 pH range, while they are unresponsive at intermediate pH values. Remarkably, these AuNCs make ratiometric sensing possible in extremely acidic media with a single fluorophore, specifically the nanocluster itself.