Photodegradation of teflon AF1600 during XPS analysis

Popovici, Dumitru; Sacher, E.; Meunier, Michel

doi:10.1002/(sici)1097-4628(19981107)70:6<1201::aid-app17>3.0.co;2-1

Cited by 15 publications

(8 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…More elaborate determinations of the surface structure are underway. Our XPS measurements are in agreement with Popovici et al , who demonstrated that irradiating Teflon AF with Mg Kα radiation at 1253.6 eV leads to the degradation of the polymer and formation of CO (Supporting Information SI2).…”

Section: Resultssupporting

confidence: 90%

Nanopatterning of Mobile Lipid Monolayers on Electron-Beam-Sculpted Teflon AF Surfaces

Shaali¹,

Lara‐Avila²,

Dommersnes

et al. 2015

ACS Nano

View full text Add to dashboard Cite

Direct electron-beam lithography is used to fabricate nanostructured Teflon AF surfaces, which are utilized to pattern surface-supported monolayer phospholipid films with 50 nm lateral feature size. In comparison with unexposed Teflon AF coatings, e-beam-irradiated areas show reduced surface tension and surface potential. For phospholipid monolayer spreading experiments, these areas can be designed to function as barriers that enclose unexposed areas of nanometer dimensions and confine the lipid film within. We show that the effectiveness of the barrier is defined by pattern geometry and radiation dose. This surface preparation technique represents an efficient, yet simple, nanopatterning strategy supporting studies of lipid monolayer behavior in ultraconfined spaces. The generated structures are useful for imaging studies of biomimetic membranes and other specialized surface applications requiring spatially controlled formation of self-assembled, molecularly thin films on optically transparent patterned polymer surfaces with very low autofluorescence.

show abstract

Section: Resultssupporting

confidence: 90%

Nanopatterning of Mobile Lipid Monolayers on Electron-Beam-Sculpted Teflon AF Surfaces

Shaali¹,

Lara‐Avila²,

Dommersnes

et al. 2015

ACS Nano

View full text Add to dashboard Cite

show abstract

“…While, as we have explained, the presence of several simultaneous phenomena (surface disorder, ligand field effects, and Russell−Saunders coupling) prevents our demonstration of surface disorder in the Fe 2p spectrum, this is not the case for the O 1s spectrum. There, we base ourselves on the fact that, since the inception of our laboratory in 1984 with its VG ESCALab 3 Mk II spectrometer, the width of the O 1s peak, in many different environments, has always been found to be 1.8 eV. ,,,− We have thus found it possible to separate oxygen environments when several exist in a sample, whether organic or inorganic. It is for this reason that we undertook to explore the introduction of an additional O 1s peak in our oxide samples.…”

Section: Discussionmentioning

confidence: 99%

Confirmation of X-ray Photoelectron Spectroscopy Peak Attributions of Nanoparticulate Iron Oxides, Using Symmetric Peak Component Line Shapes

et al. 2010

Self Cite

View full text Add to dashboard Cite

We use high purity Fe oxide nanoparticles to confirm the Fe 2p X-ray photoemission peak attributions made in our previous study of Fe nanoparticles and the initial stage of their oxidation. To accomplish this, we have found it necessary to consider the spectral contributions of the ligand field of the Fe−O crystal structure, the crystalline disorder at the nanoparticle surface, and the Russell−Saunders broadening of the FeIII components of the Fe 2p spectra.

show abstract

“…The C 1s spectrum of FC coated ITO in figure 3(a) can be resolved into five peaks located at 293.2 (CF 3 ), 291 (CF 2 ), 288 (COO), 286.5 (C-CF) and 284.5 (C-C or C-H) functional groups. The F1s spectral analysis shows the peak at 688.5 eV (F-C) by the fluoropolymer on the ITO surface, where the main peak can be further resolved with 3 component peaks due to CF 2 , CF 3 and CF in order of decreasing binding energies [17]. The atomic concentration of indium was decreased from 32.9% to 11.8% (530 eV peak in oxygen spectra, caused by indium oxide [18]).…”

Section: Resultsmentioning

confidence: 99%

Ultra-thin fluoropolymer buffer layer as an anode stabilizer of organic light emitting devices

Yang¹,

Lee²,

Song³

et al. 2007

J. Phys. D: Appl. Phys.

View full text Add to dashboard Cite

We have investigated the effect of thin fluoro-acrylic polymer as an anode stabilizer on the lifetime of an organic light emitting device (OLED). Surface chemical properties of commercial fluoropolymer, FC-722 (Fluorad™ of 3M), on indium–tin oxide (ITO) were characterized by x-ray photoemission spectroscopy. An OLED with 1 nm thick fluoropolymeric film showed identical brightness and efficiency behaviour and improved operational stability compared with the reference device with UV-O3 treated ITO. The improvement in the lifetime was accompanied by the suppression of the voltage increase at the initial stage of constant-current driving, which can be attributed to the action of the FC-722 layer by smoothing the ITO surface. Fluoropolymer coating, therefore, improves the lifetime of the small molecular OLED by the simple and reliable anode-stabilizing process.

show abstract

Photodegradation of teflon AF1600 during XPS analysis

Cited by 15 publications

References 4 publications

Nanopatterning of Mobile Lipid Monolayers on Electron-Beam-Sculpted Teflon AF Surfaces

Nanopatterning of Mobile Lipid Monolayers on Electron-Beam-Sculpted Teflon AF Surfaces

Confirmation of X-ray Photoelectron Spectroscopy Peak Attributions of Nanoparticulate Iron Oxides, Using Symmetric Peak Component Line Shapes

Ultra-thin fluoropolymer buffer layer as an anode stabilizer of organic light emitting devices

Contact Info

Product

Resources

About