TY  - JOUR
A1  - Turhan, Metehan C.
A1  - Sarac, A. Sezai
A1  - Gencturk, Asli
A1  - Gilsing, Hans-Detlev
A1  - Faltz, Heike
A1  - Schulz, Burkhard
T1  - Electrochemical impedance characterization and potential dependence of poly[3,4-(2,2-dibutylpropylenedioxy)thiophene] nanostructures on single carbon fiber microelectrode
JF  - Synthetic metals : the journal of electronic polymers and electronic molecular materials
N2  - The electropolymerization of 3,4-(2,2-dibutylpropylenedioxy)thiophene (ProDOT-Bu-2) onto single carbon fiber microelectrode (SCFME) was conducted in acetonitrile (ACN) containing sodium perchlorate (NaClO4) as electrolyte and investigated by cyclic voltammetry (CV). The nanostructured films of poly[3,4-(2,2-dibutyl-propyleneclioxy)thiophene] (PProDOT-Bu-2) which were depositing showed complete reversible redox behavior in monomer-free electrolyte solution.
 The capacitive behavior of the films was investigated by electrochemical impedance spectroscopy (EIS) at applied potentials from 0.1 V to 1.3 V. The analysis by equivalent circuit modeling revealed an applied potential around 0.4V to be most suitable for the system PProDOT-Bu-2/SCFME as a double layer supercapacitor component inducing a double layer capacitance C-d, value of 62 mFcm(-2).
KW  - Nanostructure
KW  - Electrochemical impedance spectroscopy
KW  - Conjugated polymeric thin film
KW  - Carbon fiber
Y1  - 2012
U6  - https://doi.org/10.1016/j.synthmet.2012.01.012
SN  - 0379-6779
VL  - 162
IS  - 5-6
SP  - 511
EP  - 515
PB  - Elsevier
CY  - Lausanne
ER  - 
TY  - JOUR
A1  - Guler, Fatma G.
A1  - Gilsing, Hans-Detlev
A1  - Schulz, Burkhard
A1  - Sarac, A. Sezai
T1  - Impedance and morphology of hydroxy- and chloro-functionalized poly(3,4-propylenedioxythiophene) nanostructures
JF  - Journal of nanoscience and nanotechnolog
N2  - The new 3,4-propylenedioxythiophenes (ProDOT) bearing hydroxy- or chloro-functionalized side chains of varying length and polarity were synthesized and electropolymerized on single carbon fiber microelectrode (SCFME) using cyclo-voltammetry. Electrochemical impedance spectroscopy (EIS) revealed highest capacitance values for the hydroxy-functionalized Poly 5 carrying a side chain of medium length. The EIS data were fitted with an equivalent electrical circuit giving a good correlation. AFM analysis of the topography showed higher roughness values for Poly 5 than for the two other polymers bearing longer side chains. Due to their reactive end groups the polymers should be useful for post-polymerization functionalization of the electrode surface.
KW  - 3,4-Propylenedioxythiophene
KW  - Electroactive Conjugated Polymer
KW  - EIS
KW  - AFM
Y1  - 2012
U6  - https://doi.org/10.1166/jnn.2012.6594
SN  - 1533-4880
VL  - 12
IS  - 10
SP  - 7869
EP  - 7878
PB  - American Scientific Publ.
CY  - Valencia
ER  -