Dual role of silver in a fluorogenic N-squaraine probe based on Ag(i)–π interactions. Issue 27 (2nd July 2021)

• Record Type: Journal Article
• Authors: Vega, Manel; Blasco, Salvador; García-España, Enrique; Soberats, Bartolomé; Frontera, Antonio; Rotger, Carmen; Costa, Antonio
• Is Part Of: Dalton transactions. Volume 50:Issue 27(2021)
• Page Start: 9367
• Page End: 9371
• Publication Date: 2021-07-02
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/d1dt01408k
• Languages: English
• ISSNs: 1477-9226

Abstract

Abstract : Cyano- N -squaraine 1 is a cinderella molecule that can offer a bright fluorescence turn-on response when an appropriate silver shoe was used. Abstract : In the presence of Ag(i ), the monoanion of cyano- N -squaraine (I) generates an intense fluorescence turn-on response. Experimental evidence and DFT calculations reveal a sequence of deprotonation-coordination events in which the Ag(i ) ions play a dual role as a Lewis acid and coordinating metal. The observed effect is highly selective for Ag(i ) compared to other metals.