The molecular structure of plasma polymerized thiophene and pyrrole thin films produced by double discharge technique

Göktaş, Hilal; Ince, Fatma Gul; Iscan, A.; Yıldız, I.; Kurt, Mustafa; Kaya, İsmet

doi:10.1016/j.synthmet.2009.07.003

Cited by 27 publications

(13 citation statements)

References 40 publications

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“…The first broad band located at 3345 cm −1 corresponds to N–H bonds with hydrogen bonded secondary amino groups. A peak belonging to aliphatic C–H groups was also located at 2965 cm −1 [ 23 , 24 , 25 ]. When increasing the I 2 doping time, the groups with multiple bonds C≡C in the peak at 2216 cm −1 were increased along with the C=C double bonds in the sharp peak at 1630 cm −1 [ 26 , 27 , 28 , 29 ], whereas the C–N bonds of the diphenyl amine group were decreased in the sharp peaks at 750 cm −1 and 696 cm −1 .…”

Section: Resultsmentioning

confidence: 99%

Atmospheric Pressure Plasma Polymerization Synthesis and Characterization of Polyaniline Films Doped with and without Iodine

et al. 2017

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Although polymerized aniline (polyaniline, PANI) with and without iodine (I2) doping has already been extensively studied, little work has been done on the synthesis of PANI films using atmospheric pressure plasma (APP) deposition. Therefore, this study characterized pure and I2-doped PANI films synthesized using an advanced APP polymerization system. The I2 doping was conducted ex-situ and using an I2 chamber method following the APP deposition. The pure and I2-doped PANI films were structurally analyzed using field emission scanning electron microscope (FE-SEM), atomic force microscope (AFM), X-ray Diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), and time of flight secondary ion mass spectrometry (ToF-SIMS) studies. When increasing the I2 doping time, the plane and cross-sectional SEM images showed a decrease in the width and thickness of the PANI nanofibers, while the AFM results showed an increase in the roughness and grain size of the PANI films. Moreover, the FT-IR, XPS, and ToF-SIMS results showed an increase in the content of oxygen-containing functional groups and C=C double bonds, yet decrease in the C–N and C–H bonds when increasing the I2 doping time due to the reduction of hydrogen in the PANI films via the I2. To check the suitability of the conductive layer for polymer display applications, the resistance variations of the PANI films grown on the interdigitated electrode substrates were also examined according to the I2 doping time.

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Section: Resultsmentioning

confidence: 99%

Atmospheric Pressure Plasma Polymerization Synthesis and Characterization of Polyaniline Films Doped with and without Iodine

et al. 2017

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“…The fluorene monomer spectrum given in the same figure was recorded via a Perkin Elmer FTIR Spectrum One using the ATR attachment. The main characteristics of the FTIR spectra of the plasma polymerized thin films are as follows: (1) the bands of the FTIR spectra are much broader than the conventional ones because of the branching and cross-linking [16]; (2) if the thin film is exposed to open atmosphere, the longlived radicals trapped within the network react with the atmospheric gases and water vapor, so that related oxygen (O) bands are observed even though O does not exist within the monomer structure and has not been fed to the reactor during the polymerization process [16,22,23] (3) the high energy input during the plasma processes leads to monomer fragmentation.…”

Section: Resultsmentioning

confidence: 99%

Polyfluorene Thin Films Synthesized by a Novel Plasma Polymerization Method

Göktaş

Mansuroglu

Atalay

et al. 2011

Plasma Chem Plasma Process

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The synthesis of polyfluorene (PF) thin films by simultaneously superposing a continuous and pulsed discharge and the characterizations of these samples are presented. The double discharge plasma system is constructed by superposing two discharges; namely, a low pressure dc glow one and a high current pulsed one. The fluorene monomer in powder form was vaporized in the system at argon plasma without any modification, at 0.5 mbar operating pressure. The structure of the thin films was investigated via XPS, UV-visible, FTIR, XRD and SEM. The FTIR and the UV-visible results revealed that the fluorene structure was retained at the produced samples. Semi-conducting behavior was established, and upon the iodine doping, the optical energy band gap (E g ) dropped down from 3.7 to 2.4 eV. The morphology of the synthesized PF thin films was amorphous, with granular structures of different sizes depending on the location of the substrate.

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“…They collide with each other and disappear or combine 25. The oxidation is much stronger because the active species is easy to be decomposed by the reserved free radicals (e.g., O 2 ) on the samples surface when samples were taken out from the reactor chamber 24, 26. Hence, to eliminate the side‐effect of oxidation contamination as weak as possible, the samples used in SPR and EIS measurements were removed from the reactor chamber after the plasma irradiation for 20 min.…”

Section: Resultsmentioning

confidence: 99%

Plasma Polymerized Pyrrole Films for Biological Applications: Correlation Between Protein Adsorption Properties and Characteristics

Dou¹,

Yan²,

Zheng³

et al. 2011

Plasma Processes & Polymers

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The present work describes the fabrication, characterization, and optimization of plasma polymerized pyrrole films, PPpy, prepared by continuous wave for application as the adhesion layers of bovine serum albumin (BSA). Plasma conditions used throughout the work produced significant differences in the chemical, physical, and electrochemical properties of the resultant PPpy films. Structural analysis and property characterizations of PPpy were carried out using Fourier transform infrared spectroscopy, X‐ray photoelectron spectroscopy, and electrochemical workstation. Surface plasmon resonance spectroscopy was used to investigate the adsorption kinetics of BSA onto PPpy films. Moreover, when immersed in solutions or after BSA adsorption, the differences of electron transfer at the interfaces between the PPpy and the electrolyte solutions were determined by electro impedance spectroscopy. While there is a clear dependence of the protein adsorption affinity on the plasma polymerization condition employed during the film preparation. The relationship between film structure, electrochemical properties, polymer stability in aqueous buffer, and protein binding affinities are discussed.

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The molecular structure of plasma polymerized thiophene and pyrrole thin films produced by double discharge technique

Cited by 27 publications

References 40 publications

Atmospheric Pressure Plasma Polymerization Synthesis and Characterization of Polyaniline Films Doped with and without Iodine

Atmospheric Pressure Plasma Polymerization Synthesis and Characterization of Polyaniline Films Doped with and without Iodine

Polyfluorene Thin Films Synthesized by a Novel Plasma Polymerization Method

Plasma Polymerized Pyrrole Films for Biological Applications: Correlation Between Protein Adsorption Properties and Characteristics

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