Vega M, Blasco S, García-España E, Soberats B, Frontera A, Rotger C, Costa A. Dual role of silver in a fluorogenic
N-squaraine probe based on Ag(I)-π interactions.
Dalton Trans 2021;
50:9367-9371. [PMID:
34198315 DOI:
10.1039/d1dt01408k]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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.
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