Preparation, characterization and electronic and optical properties of plasma-polymerized nitriles

Hu, Xiao; Zhao, Xiongyan; Uddin, Ashraf; Lee, C.B.

doi:10.1016/j.tsf.2004.08.118

Cited by 16 publications

(3 citation statements)

References 18 publications

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“…The surface topography of the polyterpenol films was investigated by means of AFM. Irrespective of deposition power, polymer films were found to be smooth, uniform and pinhole free (Figure ), suggesting that the polymerization occurred predominantly on the surface of the glass substratum rather than in the gas phase . Surfaces of the films deposited at 25 W exhibited slightly higher average ( R a ) and rms ( R q ) surface roughness parameters compared to those samples fabricated at 10 W; R a increased from 0.39 to 0.42 nm and R q from 0.51 to 0.52 nm.…”

Section: Resultsmentioning

confidence: 98%

Plasma-Enhanced Synthesis of Bioactive Polymeric Coatings from Monoterpene Alcohols: A Combined Experimental and Theoretical Study

et al. 2010

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This paper describes the synthesis and characterization of a novel organic polymer coating for the prevention of the growth of Pseudomonas aeruginosa on the solid surface of three-dimensional objects. Substrata were encapsulated with polyterpenol thin films prepared from terpinen-4-ol using radio frequency plasma enhanced chemical vapor deposition. Terpinen-4-ol is a constituent of tea tree oil with known antibacterial properties. The influence of deposition power on the chemical structure, surface composition, and ultimately the antibacterial inhibitory activity of the resulting polyterpenol thin films was studied using X-ray photoelectron spectroscopy (XPS), water contact angle measurement, atomic force microscopy (AFM), and 3-D interactive visualization and statistical approximation of the topographic profiles. The experimental results were consistent with those predicted by molecular simulations. The extent of bacterial attachment and extracellular polymeric substances (EPS) production was analyzed using scanning electron microscopy (SEM) and confocal scanning laser microscopy (CSLM). Polyterpenol films deposited at lower power were particularly effective against P. aeruginosa due to the preservation of original terpinen-4-ol molecules in the film structure. The proposed antimicrobial and antifouling coating can be potentially integrated into medical and other clinically relevant devices to prevent bacterial growth and to minimize bacteria-associated adverse host responses.

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Section: Resultsmentioning

confidence: 98%

Plasma-Enhanced Synthesis of Bioactive Polymeric Coatings from Monoterpene Alcohols: A Combined Experimental and Theoretical Study

et al. 2010

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“…I Surfaces with RMS roughness values below 0.5 nm have an insignificant effect on its surface and chemical properties and performance [40]. Considering this and the determined roughness of 0.3 nm, the polymerization reactions are confirmed to take place mostly on the surface of the glass substrate rather than in the gas phase [41].…”

Section: Surface Morphologymentioning

confidence: 83%

Optical and Surface Characterization of Radio Frequency Plasma Polymerized 1-Isopropyl-4-Methyl-1,4-Cyclohexadiene Thin Films

2014

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Low pressure radio frequency plasma-assisted deposition of 1-isopropyl-4methyl-1,4-cyclohexadiene thin films was investigated for different polymerization conditions. Transparent, environmentally stable and flexible, these organic films are promising candidates for organic photovoltaics (OPV) and flexible electronics applications, where they can be used as encapsulating coatings and insulating interlayers. The effect of deposition RF power on optical properties of the films was limited, with all films being optically transparent, with refractive indices in a range of 1.57-1.58 at 500 nm. The optical band gap (E g) of ~3 eV fell into the insulating E g region, decreasing for films fabricated at higher RF power. Independent of deposition conditions, the surfaces were smooth and defect-free, with uniformly distributed morphological features and average roughness between 0.30 nm (at 10 W) and 0.21 nm (at 75 W). Films fabricated at higher deposition power displayed enhanced resistance to delamination and wear, and improved hardness, from 0.40 GPa for 10 W to 0.58 GPa for 75 W at a load of 700 μN. From an application perspective, it is therefore possible to tune the mechanical and morphological properties of these films without compromising their optical transparency or insulating property.

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“…As well as this, a material's electrical characteristics are also an important consideration when determining its suitability as a gate dielectric [13]. Radio Frequency (RF) plasma polymerisation provides thin films which are smooth, pinhole free and void of surface defects [17]. Additionally, plasma polymerised thin films can be made chemically and physically stable in ambient environments over a long period of time by correct choice of deposition parameters [18,19].…”

Section: Introductionmentioning

confidence: 99%

Electrical characterisations of plasma polyermised linalyl acetate

Anderson

Jacob

2012

Materials Science and Engineering: B

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Thin films of plasma polymerised linalyl acetate (PLA) were fabricated and their electrical properties investigated. The high frequency dielectric constant was determined using the split post dielectric resonator (SPDR) technique at frequencies of 10 GHz and 20 GHz and compared with the low frequency dielectric constant found from capacitive measurements of metal-insulator-metal (MIM) structures. Dielectric constants of 2.39 and 2.43 resulted from each of the respective techniques, in good agreement with each other. The J-V characteristics of MIM structures fabricated at various RF power levels were then investigated in order to determine the resistivity and DC conduction mechanism of the PLA thin films. From these data, the predominate mechanism of charge transport in the high voltage region was found to be consistent with Richardson-Schottky conduction, and the resistivity of the thin films found to increase with increasing RF power.

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Preparation, characterization and electronic and optical properties of plasma-polymerized nitriles

Cited by 16 publications

References 18 publications

Plasma-Enhanced Synthesis of Bioactive Polymeric Coatings from Monoterpene Alcohols: A Combined Experimental and Theoretical Study

Plasma-Enhanced Synthesis of Bioactive Polymeric Coatings from Monoterpene Alcohols: A Combined Experimental and Theoretical Study

Optical and Surface Characterization of Radio Frequency Plasma Polymerized 1-Isopropyl-4-Methyl-1,4-Cyclohexadiene Thin Films

Electrical characterisations of plasma polyermised linalyl acetate

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