Publications Repository - Gdańsk University of Technology

Metal cations complexation and proton binding by 13- and 16-membered diphenyl-azobenzocrowns and diphenyl-hydroxyazobenzocrowns were studied in acetonitrile using spectroscopic methods: UV–vis spectroscopy, spectrofluorimetry, and 1H NMR spectroscopy. Phenyl moieties in benzene rings were found to affect binding strength alkali and alkaline earth metal cations and hydrogen ion, and affect tautomeric equilibrium of hydroxyazobenzocrowns. X-ray structure of 13-membered diphenyl-hydroxyazobenzocrown was solved showing the existence of this compound in quinone-hydrazone form in a solid state. The suitability of diphenyl-azobenzocrowns for potentiometric metal cation determination using miniature, planar, all-solid-state type electrodes was also tested.

Authors

• dr hab. inż. Ewa Wagner-Wysiecka link open in new tab ,
• mgr inż. Mirosław Szarmach link open in new tab ,
• prof. dr hab. inż. Jarosław Chojnacki link open in new tab ,
• dr inż. Natalia Łukasik link open in new tab ,
• prof. dr hab. inż. Elżbieta Luboch link open in new tab