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Synthesis of new building blocks for conjugated oligomers
KTH, Superseded Departments, Chemistry.
2004 (English)Doctoral thesis, comprehensive summary (Other scientific)
Abstract [en]

This thesis deals with the synthesis of new organicmaterials for electronic applications. Several new ring-formingmethods are employed to construct sulphur heterocycles: Tandemelectrophilic aromatic substitution and acid-catalyzedtransetherification of methoxythiophene, double electrophilicaromatic substitutions with ethane-1, 2-disulphenyl chloride,and also, the reaction of dienes with sulphur dichloride. Twonew condensed thiophenes have been incorporated in end-cappedoligothiophenes. An improvement of the synthesis of [3,2-b:2Â’, 3-d]thiophene is reported, with some attempts toincorporate it in oligomers. A synthesis of substitutednaphthalenes is also described. A new method of producingdisubstituted thiophenes from substituted butadienes anssulphur dichloride is employed in a new route to 3, 4-ethylenedioxythiophene, a very important monomer for conductingpolymers.

Keywords :Organic Semiconductors, Thiophenes,Heterocyclic Synthesis, Dithienothiophene, Naphthalene,Ethylenedioxythiophene

Place, publisher, year, edition, pages
Stockholm: Kemi , 2004. , 68 p.
Trita-IOK, ISSN 1100-7974 ; 04:89
Keyword [en]
organic semiconductors, thiophenes, heterocyclic synthesis, dithienothiophene, naphthalene
URN: urn:nbn:se:kth:diva-3782ISBN: 91-7283-764-0OAI: diva2:9634
Public defence
2004-06-04, 00:00
Available from: 2004-06-02 Created: 2004-06-02 Last updated: 2012-03-19

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