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Anion binding by p-aminoazobenzene-derived aromatic amides: spectroscopic and electrochemical studies

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Abstract

The synthesis and complexing properties of p-aminoazobenzene-derived mono-, bis-, and trisamides were described. Ligands 3 and 4 bind anions, including fluorides, chlorides, bromides, acetates, benzoates, dihydrogen phosphates, hydrogen sulfates, and p-toluenesulfonates, in chloroform forming 1 : 1 complexes. The highest value of stability constant was evaluated for the 4-F complex (log K = 5.63 ± 0.21). On the basis of 1H NMR, and FTIR spectroscopy, the possible nature of the ligand–anion interactions was proposed. The EZ isomerization process of tripodal amide 4 in chloroform was studied. The effect of anions on Z to E thermal back isomerization was investigated.

Graphical abstract: Anion binding by p-aminoazobenzene-derived aromatic amides: spectroscopic and electrochemical studies

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Publication details

The article was received on 29 Jun 2017, accepted on 30 Aug 2017 and first published on 08 Sep 2017


Article type: Paper
DOI: 10.1039/C7PP00245A
Citation: Photochem. Photobiol. Sci., 2017, Advance Article
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    Anion binding by p-aminoazobenzene-derived aromatic amides: spectroscopic and electrochemical studies

    N. Łukasik and E. Wagner-Wysiecka, Photochem. Photobiol. Sci., 2017, Advance Article , DOI: 10.1039/C7PP00245A

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