scholarly journals Voltage-dependent structural changes of the membrane-bound anion channel hVDAC1 probed by SEIRA and electrochemical impedance spectroscopy

2014 ◽  
Vol 16 (20) ◽  
pp. 9546-9555 ◽  
Author(s):  
Jacek Kozuch ◽  
Conrad Weichbrodt ◽  
Diego Millo ◽  
Karin Giller ◽  
Stefan Becker ◽  
...  
Keyword(s):  
Electrochemical Impedance Spectroscopy ◽  
Impedance Spectroscopy ◽  
Structural Changes ◽  
Lipid Membrane ◽  
Electrochemical Impedance ◽  
Anion Channel ◽  
Bilayer Lipid Membrane ◽  
Voltage Dependent ◽  
Membrane Bound ◽  
Insight Into

SEIRA spectroscopy provides insight into the potential-induced structural changes of the anion channel hVDAC1 embedded in the tethered bilayer lipid membrane.

scholarly journals Interaction of Lorazepam with Planar Bilayer Lipid Membrane and Development of Impedimetric Sensor

2019 ◽  
Vol 31 (5) ◽  
pp. 1169-1175
Author(s):  
S. Sivakumar ◽  
S. Rameshkumar ◽  
S. Sathishkumar ◽  
A. Sankar
Keyword(s):  
Electrochemical Impedance Spectroscopy ◽  
Electrical Properties ◽  
Impedance Spectroscopy ◽  
Lipid Membrane ◽  
Electrochemical Impedance ◽  
Bilayer Lipid Membrane ◽  
Phospholipid Membrane ◽  
Planar Bilayer ◽  
Bilayer Lipid ◽  
The Stability

Artificial planar bilayer phospholipid membrane was formed in KCl bath solutions and its electrical properties have been analyzed using electrochemical impedance spectroscopy. The stability of planar bilayer lipid membrane depends on concentration of KCl in the bath. Changes in the electrical properties of planar bilayer lipid membrane with the addition of lorazepam were also studied using electrochemical impedance spectroscopy. Lorazepam gets partitioned into bilayer lipid membrane and exhibited a fluidization effect. The ionic conductance across the bilayer lipid membrane increased with the addition of lorazepam to the bath. An impedimetric sensor was developed for quantification of lorazepam in solution.

Bias voltage dependent electrochemical impedance spectroscopy of p- and n-type silicon substrates

2005 ◽  
Vol 51 (4) ◽  
pp. 665-676 ◽  
Author(s):  
M. Chemla ◽  
J.F. Dufrêche ◽  
I. Darolles ◽  
F. Rouelle ◽  
D. Devilliers ◽  
...  
Keyword(s):  
Electrochemical Impedance Spectroscopy ◽  
Impedance Spectroscopy ◽  
Bias Voltage ◽  
Electrochemical Impedance ◽  
Silicon Substrates ◽  
Type Silicon ◽  
Voltage Dependent

scholarly journals Studies on Anion Exchange Membrane and Interface Properties by Electrochemical Impedance Spectroscopy: The Role of pH

Membranes ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 771
Author(s):  
Wenjuan Zhang ◽  
Wei Cheng ◽  
Ramato Ashu Tufa ◽  
Caihong Liu ◽  
David Aili ◽  
...  
Keyword(s):  
Electrochemical Impedance Spectroscopy ◽  
Impedance Spectroscopy ◽  
Ion Exchange ◽  
Electrochemical Properties ◽  
Anion Exchange ◽  
Structural Changes ◽  
Electrochemical Impedance ◽  
Transport Processes ◽  
Anion Exchange Membranes ◽  
Interface Properties

Ion-exchange membranes (IEMs) represent a key component in various electrochemical energy conversion and storage systems. In this study, electrochemical impedance spectroscopy (EIS) was used to investigate the effects of structural changes of anion exchange membranes (AEMs) on the bulk membrane and interface properties as a function of solution pH. The variations in the physico/electrochemical properties, including ion exchange capacity, swelling degree, fixed charge density, zeta potentials as well as membrane and interface resistances of two commercial AEMs and cation exchange membranes (CEMs, as a control) were systematically investigated in different pH environments. Structural changes of the membrane surface were analyzed by Fourier transform infrared and X-ray photoelectron spectroscopy. Most notably, at high pH (pH > 10), the membrane (Rm) and the diffusion boundary layer resistances (Rdbl) increased for the two AEMs, whereas the electrical double layer resistance decreased simultaneously. This increase in Rm and Rdbl was mainly attributed to the deprotonation of the tertiary amino groups (-NR2H+) as a membrane functionality. Our results show that the local pH at the membrane-solution interface plays a crucial role on membrane electrochemical properties in IEM transport processes, particularly for AEMs.

Electrochemical Impedance Spectroscopy to Evaluate the Adsorption and Structural Changes of Liposome Dependent with Surface Charge

2020 ◽  
Vol MA2020-02 (68) ◽  
pp. 3685-3685
Author(s):  
Yusuke Fujino ◽  
Ryo Nakamura ◽  
Kyosuke Masuda ◽  
Ichiro Yamashita ◽  
Tomohiro Shimizu ◽  
...  
Keyword(s):  
Electrochemical Impedance Spectroscopy ◽  
Impedance Spectroscopy ◽  
Surface Charge ◽  
Structural Changes ◽  
Electrochemical Impedance
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