Fast and slow EQCM response of zwitterionic weak electrolytes to changes in the electrode potential: a pH-mediated mechanism

Using a fast electrochemical quartz crystal microbalance (EQCM), zwitterionic electrolytes were studied with regard to changes of resonance frequency and resonance bandwidth after the electrode potential was switched. In addition to a fast change of frequency (within milliseconds), a further, slower...

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Veröffentlicht in:	Analyst (London) 2021-09, Vol.146 (19), p.65-613
Hauptverfasser:	Leppin, Christian, Langhoff, Arne, Poggemann, Hanna-Friederike, Gödde, Alexander Simon, Johannsmann, Diethelm
Format:	Artikel
Sprache:	eng
Schlagworte:	Amino acids Bandwidths Coupling (molecular) Dipole interactions Electric fields Electrochemical impedance spectroscopy Electrode potentials Electrolytes Microbalances Quartz crystals Resonance Response time Serum albumin Viscoelasticity Viscosity Zwitterions
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