Fluorescent asymmetric bis-ureas for pyrophosphate recognition in pure water. Issue 7 (14th January 2016)

• Record Type: Journal Article
• Authors: Casula, Arianna; Bazzicalupi, Carla; Bettoschi, Alexandre; Cadoni, Enzo; Coles, Simon J.; Horton, Peter N.; Isaia, Francesco; Lippolis, Vito; Mapp, Lucy K.; Marini, Giada M.; Montis, Riccardo; Scorciapino, Mariano Andrea; Caltagirone, Claudia
• Is Part Of: Dalton transactions. Volume 45:Issue 7(2016)
• Page Start: 3078
• Page End: 3085
• Publication Date: 2016-01-14
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/c5dt04497a
• Languages: English
• ISSNs: 1477-9226

Abstract

Abstract : Fluorescent asymmetric bis-ureas are able to recognize HPpi 3− in water. Abstract : Three fluorescent asymmetric bis-urea receptors (L1–L3 ) have been synthesised. The binding properties ofL1–L3 towards different anions (fluoride, acetate, hydrogencarbonate, dihydrogen phosphate, and hydrogen pyrophosphate HPpi 3− ) have been studied by means of 1 H-NMR, UV-Vis and fluorescence spectroscopy, single crystal X-ray diffraction, and theoretical calculations. In particular, a remarkable affinity for HPpi 3− has been observed in the caseL1 (DMSO- d 6 /0.5% H2 O) which also acts as a fluorimetric chemosensor for this anion. Interestingly, whenL1 is included in cetyltrimethylammonium (CTAB) micelles, hydrogen pyrophosphate recognition can also be achieved in pure water.