Impedance spectroscopy of thin films of emeraldine base polyaniline and its implications for chemical sensing

2006 ◽  
Vol 156 (21-24) ◽  
pp. 1396-1400 ◽  
Author(s):  
Mihai Irimia-Vladu ◽  
Jeffrey W. Fergus
Keyword(s):  
Thin Films ◽  
Impedance Spectroscopy ◽  
Chemical Sensing ◽  
Emeraldine Base

Chemical composition, crystallographic structure and impedance spectroscopy of titanium oxynitride TiNxOy thin films

2011 ◽  
Vol 192 (1) ◽  
pp. 693-698 ◽  
Author(s):  
M. Radecka ◽  
E. Pamula ◽  
A. Trenczek-Zajac ◽  
K. Zakrzewska ◽  
A. Brudnik ◽  
...  
Keyword(s):  
Thin Films ◽  
Chemical Composition ◽  
Impedance Spectroscopy ◽  
Crystallographic Structure

Preparation, Characterization and Chemical Sensing Properties of Polyaniline Thin Films

2012 ◽  
Vol 12 (16) ◽  
pp. 1710-1713 ◽  
Author(s):  
Antony Sasither S ◽  
Jeyaprakash Beri Gopal ◽  
John Bosco Bala
Keyword(s):  
Thin Films ◽  
Chemical Sensing ◽  
Sensing Properties

Development of Chemical Sensing Platforms Based on Sol−Gel-Derived Thin Films:  Origin of Film Age vs Performance Trade-Offs

1996 ◽  
Vol 68 (4) ◽  
pp. 604-610 ◽  
Author(s):  
Richard A. Dunbar ◽  
Jeffrey D. Jordan ◽  
Frank V. Bright
Keyword(s):  
Thin Films ◽  
Chemical Sensing ◽  
Sol Gel ◽  
Trade Offs ◽  
Sensing Platforms

scholarly journals Structural characteristics and electrochemical properties of sulfonated polyimide clay-based composite fabricated by a solution casting method

2019 ◽  
Vol 30 (21) ◽  
pp. 19164-19172 ◽  
Author(s):  
Nisar Ali ◽  
Farman Ali ◽  
Shaukat Saeed ◽  
Syed Sakhawat Shah ◽  
Muhammad Bilal
Keyword(s):  
Thin Films ◽  
Impedance Spectroscopy ◽  
Proton Nuclear Magnetic Resonance ◽  
Resonance Spectroscopy ◽  
Solution Casting ◽  
Casting Method ◽  
Energy Devices ◽  
H Nmr ◽  
Sulfonated Polyimide ◽  
Solution Casting Method

Abstract Herein, the electrochemical and structural properties of sulfonated polyimide (SPI) clay-based composite films have been investigated. SPI reinforced with grafted sonicated clay (GSC) was fabricated via a solution casting method in the form of thin films. The as-synthesized thin films were light brown, tough, flexible and transparent. The thickness of the films were 0.109 mm and 0.056 for pristine SPI and GSC-SPI, respectively. The fabricated composite was fully investigated via Fourier transform infrared spectroscopy (FTIR), proton nuclear magnetic resonance spectroscopy (1H NMR), carbon (13C) NMR and impedance spectroscopy. The completion of the proton exchange reaction was confirmed by 1H NMR. The electrical properties of the SPI-clay based composite film were investigated by impedance spectroscopy. The conductivity was measured in a wide frequency range from room temperature to 363 K by applying an ac signal of 0.5 V. The appearance of two semicircular arcs at low and high frequency shows two conduction mechanisms with different relaxation times at the exterior and interior of the system. Bode plot also confirms the presence of two electro-active regions. The shift in the position of tanδ peaks to lower frequency region with increasing temperature shows that these relaxations are thermally deactivated. The ac conductivity of the system increased from 6.02E−10 for neat SPI to 6.61E−6 Ω−1 cm−1 for SPI-GSC composite. In conclusion, these layered silicates based conductive films have the potential to act as a polyelectrolyte membrane for fuel cell energy devices.

Impedance spectroscopy studies on polycrystalline BiFeO3 thin films on Pt/Si substrates

2009 ◽  
Vol 105 (5) ◽  
pp. 054103 ◽  
Author(s):  
Amar Srivastava ◽  
Ashish Garg ◽  
Finlay D. Morrison
Keyword(s):  
Thin Films ◽  
Impedance Spectroscopy ◽  
Si Substrates ◽  
Bifeo3 Thin Films ◽  
Spectroscopy Studies
Sign in / Sign up

Export Citation Format

Share Document