Polymer films filled with organic molecules by CO2 laser evaporation in vacuum

Grytsenko, K.; Lytvyn, O. S.; Ivanov, L. F.; Гракович, П. Н.; Sonntag, MH Michael; Schrader, Sigurd

doi:10.1016/j.apsusc.2007.02.080

Cited by 4 publications

(2 citation statements)

References 8 publications

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“…The effect of the evaporation rates has been studied elsewhere. 42 26 In the case of Grytsenko et al, 42 the presence of clusters similar to those found in our system was reported for laser evaporated films. The authors assigned the cluster formation to condensation of the molecules onto the substrate.…”

Section: Pvd Film Morphology At Micro and Nanometer Scalessupporting

confidence: 85%

Molecular Architecture of Thin Films Fabricated via Physical Vapor Deposition and Containing a Poly(azo)urethane

Aléssio¹,

Constantino²,

Job³

et al. 2010

J. Nanosci. Nanotech.

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Organic thin films are widely applied as transducers in devices whose performance is determined by the optical and electrical properties of the films. In this context, the molecular architecture of the thin films plays an important role. In this work we report the fabrication and characterization of a poly(azo)urethane synthesized fixing CO2 in bis-epoxide followed by a copolymerization reaction with an azodiamine without using isocyanate. The poly(azo)urethane thin films were fabricated by physical vapor deposition (PVD) technique using vacuum thermal evaporation. The molecular architecture of the PVD films was investigated under control growth at nanometer level of thickness, as well as the surface morphology at micro and nanometer scales and the molecular organization. The thermal stability of the poly(azo)urethane molecules, which is a challenge in itself considering the thermal evaporation process, was followed by thermogravimetric analysis (TG) and also by both Fourier transform infrared absorption (FTIR) and ultraviolet-visible (UV-vis) absorption spectroscopies. The UV-vis absorption spectra showed a linear growth of the absorbance of the PVD films with the mass thickness measured by a quartz crystal balance. A random distribution of the poly(azo)urethane molecules in the PVD films was revealed by FTIR spectra. The film morphology was investigated at microscopic level combining chemical and topographical information through micro-Raman technique. At nanoscopic scale, the morphology was investigated by atomic force microscopy (AFM) for films fabricated using distinct evaporation rates. As a proof of principle (for potential applications), the film luminescence was measured over a wide range of temperature. Interestingly, an unusual increase of fluorescence intensity was observed at +150 degrees C after a monotonic decrease from -150 degrees C.

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Section: Pvd Film Morphology At Micro and Nanometer Scalessupporting

confidence: 85%

Molecular Architecture of Thin Films Fabricated via Physical Vapor Deposition and Containing a Poly(azo)urethane

Aléssio¹,

Constantino²,

Job³

et al. 2010

J. Nanosci. Nanotech.

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“…The CW-CO 2 laser cost is lower than pulsed laser. Factor effecting the deposition CW-CO 2 laser evaporation are the laser wavelength, laser power, evaporation time and target-substrate distance.Moreover, the CW-CO 2 laser can be used to evaporate various materials such as ZnS:Mn [12], ZnO [13], organic molecules [14] and etc.…”

Section: Introductionmentioning

confidence: 99%

Effect of CW-CO<sub>2</sub> Laser Evaporation Parameters on Structural and Physical Properties of ZnSe Film

Phae-ngam

Sansomboon

Kumpeerapun

et al. 2015

AMR

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ZnSe thin films were deposited onto glass substrates by CW-CO2laser evaporation with the various evaporation times and laser power. SEM studies showed that the thicknesses of deposited films were varied from 176 nm to 1824 nm. AFM studies showed that the surface roughnesses were varied from 2.4 nm to 5.1 nm. The structure of deposited films were indicated by XRD technique which the result showed the cubic structure. The average crystallite sizes were calculated from the XRD pattern with ranged between 23.8 nm and 31.7 nm. The transmission spectates were ranged from 250 nm to 900 nm. The values of the optical bandgap energies determined from the absorption spectra were ranged between 2.61 eV and 2.88 eV. This paper presents the simple and low cost technique for ZnSe film deposition. Another advantage of this research is the high-precision control of thickness by the variation of the evaporation time and laser power.

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Comparison of CO₂laser and atmospheric plasma treatments on thermal stability and structural modifications of microporous poly(vinyl chloride)/Silica composites

Becker

Etienne

Bour

et al. 2008

Eur. Phys. J. Appl. Phys.

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Polymer films filled with organic molecules by CO2 laser evaporation in vacuum

Cited by 4 publications

References 8 publications

Molecular Architecture of Thin Films Fabricated via Physical Vapor Deposition and Containing a Poly(azo)urethane

Molecular Architecture of Thin Films Fabricated via Physical Vapor Deposition and Containing a Poly(azo)urethane

Effect of CW-CO<sub>2</sub> Laser Evaporation Parameters on Structural and Physical Properties of ZnSe Film

Comparison of CO₂laser and atmospheric plasma treatments on thermal stability and structural modifications of microporous poly(vinyl chloride)/Silica composites

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Polymer films filled with organic molecules by CO2 laser evaporation in vacuum

Cited by 4 publications

References 8 publications

Molecular Architecture of Thin Films Fabricated via Physical Vapor Deposition and Containing a Poly(azo)urethane

Molecular Architecture of Thin Films Fabricated via Physical Vapor Deposition and Containing a Poly(azo)urethane

Effect of CW-CO<sub>2</sub> Laser Evaporation Parameters on Structural and Physical Properties of ZnSe Film

Comparison of CO2laser and atmospheric plasma treatments on thermal stability and structural modifications of microporous poly(vinyl chloride)/Silica composites

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Product

Resources

About

Comparison of CO₂laser and atmospheric plasma treatments on thermal stability and structural modifications of microporous poly(vinyl chloride)/Silica composites