FU Berlin Digitale Dissertation
Iris Sandra Retzko : Pulse Plasma Polymerization of Acetylene, Ethylene, 1,3-Butadiene and Styrene: Spectroscopic Characterization, Alkali-Metall-Doping and Conductivity of the thin Films Pulsplasmapolymerisation von Acetylen, Ethylen, 1,3-Butadien und Styrol:
|Abstract| |Table of Contents| |More Information|

Abstract Retzko, Iris: Pulse Plasma Polymerization of Acetylene, Ethylene, 1,3-Butadiene and Styrene: Spectroscopic Characterization, Alkali-Metal-Doping and Conductivity of the thin Films Organic thin films with defined chemical structures and physical properties are required for various applications in fields concerning e.g. electronics, optics or life-science. Plasma polymerization is of technological interest, since the deposition of plasma polymers is possible on any material of any shape in the desired thickness. An asymmetrically pulsed rf plasma is used to deposit such coatings in the nm range of thickness. The deposition rates of the polymerization processes are measured by means of a quartz micro balance. The chemical structures of the plasma polymers deposited from the monomers acetylene, ethylene, 1,3-butadiene and styrene, are characterized by spectroscopic methods as XPS, NEXAFS, UV/Vis, FTIR and TOF-SIMS. On the basis of the deposition data and the spectroscopic results the polymerization mechanisms are discussed. Since the plasma polymers contain a sufficient amount of unsaturated bonds, reductive doping shall yield electrically conductive films. Therefore the alkali metals lithium, sodium and potassium are evaporated simultaneously to the polymerization process of the monomers acetylene, ethylene, 1,3-butadiene and styrene. The alkali metal doped films are analyzed by XPS and TOF-SIMS spectroscopy to get information about the chemical structure of the organometallic species. The specific electrical resistance of the pure and doped plasma polymers is measured in dependency on the frequency. Moreover the insertion of atmospheric oxygen into the plasma polymers, which were stored in air, is treated. Radical sites that remain in the plasma film are considered to play an important role in the aging-behavior of the coatings.

Table of Contents Download the whole PhDthesis as a zip-tar file or as zip-File For download in PDF format click the chapter title Titelblatt Gutachter 1. Einleitung 2. Theoretische Grundlagen 3. Experimenteller Teil 4. Methoden der Charakterisierung 5. Charakterisierung der undotierten Plasmapolymere 6. Charakterisierung der alkalimetalldotierten Plasmapolymere 7. Elektrische Leitfähigkeit der Plasmapolymere 8. Zusammenfassung der Ergebnisse und Ausblick 9. Literaturverzeichnis

More Information:
Online available:	http://www.diss.fu-berlin.de/2001/133/indexe.html
Language of PhDThesis:	german
Keywords:	Plasma Polymerization, Alkali-Metall-Doping, Conductivity, XPS, NEXAFS, FTIR
DNB-Sachgruppe:	30 Chemie
Date of disputation:	20-Jul-2001
PhDThesis from:	Fachbereich Biologie, Chemie, Pharmazie, Freie Universität Berlin
First Referee:	Prof. Dr. Manfred Hennecke
Second Referee:	Prof. Dr. Helmut Baumgärtel
Third Referee:	Prof. Dr. Ulrich Abram, Prof. Dr. Klaus Christmann
Contact (Author):	iris.retzko@bam.de
Contact (Advisor):	manfred.hennecke@bam.de
Date created:	23-Jul-2001
Date available:	25-Jul-2001

 

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