Electronic and optical properties of dibenzothiophen-S,S-dioxide and EDOT based conducting polymers

Date

2011-09-01

Author

ÇAMURLU, PINAR
Durak, Tarik
Balan, Abidin
Toppare, Levent Kamil

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

68
views

0
downloads

Among various techniques, utilization of donor-acceptor-donor (DAD) approach is known to be powerful in tuning the color of the conducting polymers. For this purpose, a new DAD type monomer 3,7-di(2,3-dihydrothieno[3,4-b][1,4]dioxin-7-yl) dibenzothiophen-S,S-dioxide (EDOTSO(2)) was developed through Stille cross coupling between tributyl(2,3-dihydrothieno[3,4-b][1,4]dioxin-7-yl)tin and 3,7-dibromodibenzothiophen-S,S-dioxide. EDOTSO(2) was polymerized electrochemically and the resultant polymer displayed color alternation from yellow to purple upon oxidation. Furthermore, EDOTSO(2) was subjected to electrochemical copolymerization in the presence of 3,4-ethylenedioxythiophene (EDOT) under both potentiodynamic and potentiostatic techniques. Spectroelectrochemical analysis demonstrated that the neutral copolymers possess reveal a shift in their dominant wavelength of absorbance upon increasing applied potential. Both homopolymer and the copolymers were characterized by means of cyclic voltammetry, FTIR, spectroelectrochemistry, kinetic properties and electrochromic device performance of EDOTSO(2) based systems were highlighted.

Subject Keywords

Mechanical Engineering, Materials Chemistry, Mechanics of Materials, Electronic, Optical and Magnetic Materials, Condensed Matter Physics, Metals and Alloys

URI

https://hdl.handle.net/11511/40135

Journal

SYNTHETIC METALS

DOI

https://doi.org/10.1016/j.synthmet.2011.06.033

Collections

Department of Chemistry, Article

Suggestions

OpenMETU
Core

CONDUCTING POLYMERS OF ANILINE .1. ELECTROCHEMICAL SYNTHESIS OF A CONDUCTING COMPOSITE DOGAN, S; Akbulut, Ural; Toppare, Levent Kamil (Elsevier BV, 1992-11-01) We describe an electrochemical synthesis of a conducting composite of polyaniline. Poly(bisphenol A carbonate) was used as the insulating polymer matrix. Composite characterization was made using FT-IR, SEM and DSC data. The conductivities of the composites seemed to be in the order of pure polyaniline as prepared by the same method. Moreover, the above-mentioned methods reveal that the resultant composites have different properties compared to a simple mechanical mixture of the two polymers.
Conductive copolymers of polyaniline, polypyrrole and poly (dimethylsiloxane) Cakmak, G; Kucukyavuz, Z; Kucukyavuz, S (Elsevier BV, 2005-05-31) Two step electrochemical polymerization method was used to obtain various conductive homopolymers, composites and copolymers of Polyaniline (PAn), Polypyrrole (PPy) and Poly(dimethylsiloxane) (PDMS). PAn/PPy, PDMS/PAn/PPy, PPy/PAn and PDMS/PPy/PAn conductive polymer films were synthesized with different compositions and their properties were compared. Films were characterized by conductivity measurements, cyclic voltammetry (CV), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), sca...
Thermally stimulated currents in layered Ga4SeS3 semiconductor Aytekin, S; Yuksek, NS; Goktepe, M; Hasanlı, Nızamı; Aydinli, A (Wiley, 2004-10-01) Thermally stimulated current (TSC) measurements are carried out on nominally undoped Ga4SeS3 layered semiconductor samples with the cur-rent flowing along the c-axis in the temperature range of 10 to 150 K. The results are analyzed according to various methods, such as curve fitting, initial rise and Chen's methods, which seem to be in good agreement with each other. Experimental evidence is found for the presence of three trapping centers in Ga4SeS3 with activation energies of 70, 210 and 357 meV. The calc...
Optical constants of Tl4Ga3InSe8 layered single crystals Goksen, K.; Hasanlı, Nızamı (Elsevier BV, 2007-11-15) The optical properties of Tl(4)Ga(3)lnSe(8) layered single crystals have been studied by means of transmission and reflection measurements in the wavelength range of 500-1100 run. The analysis of the room temperature absorption data revealed the presence of both optical indirect and direct transitions with band gap energies of 1.94 and 2.20 eV, respectively. Transmission measurements carried out in the temperature range of 10-300 K revealed that the rate of change of the indirect band gap with temperature i...
OPTICAL PHONONS IN GAS1-XSEX LAYER MIXED-CRYSTALS Hasanlı, Nızamı; MELNIK, NN; RAGIMOV, AS (Wiley, 1983-01-01) Measurements are made of polarized Raman scattering and infrared reflection spectra of twenty two compositions of GaS1‐xSex layer mixed crystals grown by the Bridgman method. Besides the usual one‐mode and two‐mode behaviours of phonon modes, a number of more complex dependences characterized by the appearance of additional bands in the spectra of mixed crystals are observed. Their appearance is accounted for by the uncovering of the Brillouin zone due to the disturbance of the periodicity of the crystal la...

Citation Formats

P. ÇAMURLU, T. Durak, A. Balan, and L. K. Toppare, “Electronic and optical properties of dibenzothiophen-S,S-dioxide and EDOT based conducting polymers,” SYNTHETIC METALS, pp. 1898–1905, 2011, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/40135.