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Autor:  

Mera, Gabriela

Titel:  

Contributions to the synthesis of silicon-rich oligocarbosilanes and their use as precursors for electrically conductive films


Dissertation 
URN:  urn:nbn:de:hbz:294-13505
URL:  http://www-brs.ub.ruhr-uni-bochum.de/netahtml/HSS/Diss/MeraGabriela/diss.pdf
Format:  application/pdf (3.8 M)
Kommentar:  Ruhr-Universität Bochum, Fakultät für Chemie. Tag der mündlichen Prüfung: 2005-03-17

Inhaltsverzeichnis
Datei:  http://www-brs.ub.ruhr-uni-bochum.de/netahtml/HSS/Diss/MeraGabriela/Inhaltsverzeichnis.pdf
Format:  application/pdf (128.8 k)

Zusammenfassung
Datei:  http://www-brs.ub.ruhr-uni-bochum.de/netahtml/HSS/Diss/MeraGabriela/Zusammenfassung.pdf
Format:  application/pdf (192.5 k)

Schlagworte:  Hybridwerkstoff; Carbosilane; Alkene / Metathese (Chemie); Oligomere

Inhalt der Arbeit: 

This work presents an easier route to unsaturated silicon-rich oligocarbosilanes with conjugated and nonconjugated chains and the first oriented investigation of the optical and electronic properties of the synthesized materials before and after doping with iodine. The thesis has three important parts: the synthesis of the precursors as monomers for oligomerization, the oligomerization reactions and the conductivity measurements of the synthesized monomers and oligomers. The precursors are dialkenyl-oligosilanes and have been oligomerized by olefin metathesis reaction in the presence of Grubbs catalyst. An alternative method to unsaturated oligosilanes is the salt metathesis reaction of α,ω-dilithiooligosilane with dichloro-olefins. The conductivity of thin films of the products has been measured by means of four probe method. The majority of the synthesized oligocarbosilanes have the conductivity between 10-3-10-2 S/m. A nonconjugated monomer has the conductivity of 1 S/m.


Angaben des Autors:
E-Mail:  gabriela.mera@gmail.com
Homepage: 
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