Hydro‐carbon material design in a capacitively coupled radio‐frequency discharge

The synthesis and the growth of carbonaceous microparticles is observed in a capacitively coupled radio‐frequency discharge in controlled adamantane‐acetylene gas mixtures. The plasma is characterized by optical emission spectroscopy and mass spectroscopy while the produced particles were analyzed e...

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Bibliographic Details
Published in:Plasma processes and polymers 2018-03, Vol.15 (3), p.n/a
Main Authors: Mitic, Slobodan, Coussan, Stéphane, Martin, Céline, Couëdel, Lénaïc
Format: Article
Language:English
Subjects:
Acetylene
ATR FT‐IR
Chemical bonds
Condensed Matter
Discharge
Emission analysis
Gas mixtures
growth
Infrared absorption
Infrared analysis
Materials Science
Microparticles
OES
Optical emission spectroscopy
particles
Physics
Plasma
Plasma Physics
plasma polymerization
Spectrum analysis
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Summary:The synthesis and the growth of carbonaceous microparticles is observed in a capacitively coupled radio‐frequency discharge in controlled adamantane‐acetylene gas mixtures. The plasma is characterized by optical emission spectroscopy and mass spectroscopy while the produced particles were analyzed ex situ using Fourier‐Transform infrared absorption spectroscopy. It is revealed that the adamantane to acetylene ratio controlled the particle material properties, in particular the type of chemical bonds between the constituting polymers. Systematic and consistent changes in plasma parameters when changing the adamantane to acetylene ratio are also reported and are correlated to the evolution of particle material properties. Plasma from different acetylene to adamantane ratio is used for synthesis of micron size particles with different material properties. Besides the obvious changes in particle color, detailed particle analysis shows that systematic changes in type of chemical bonds between constituting polymers can be correlated to changes in plasma composition. Adamantane is identified as a source of large diamond‐like cage structures integrated into the particle by bonding hydrocarbon fragments.
ISSN:1612-8850
1612-8869
DOI:10.1002/ppap.201700152