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KTH, Superseded Departments, Chemistry.
2003 (English)Licentiate thesis, comprehensive summary (Other scientific)
Abstract [en]

This thesis deals with synthesis and characterization of newoligothiophenes and derivatives thereof, for use as organicsemiconductors in optical and electronic applications, such asfield-effect transistors and light-emitting diodes. Much workis devoted to the development of new synthetic strategies forinteresting building blocks, to beused for synthesizing suchmaterials. One series of regio-defined oligothiophenes, up tothe octamer, has been prepared and evaluated. Photoluminescencequantum efficiencies of these were 22-31 % in solution, butdropped to 2-5 % in the solid state. Another project deals withthe development of oligothiophenes with in-chain chirality.These may find use in polarized lightemitting diodes. Finally,two oligothienyl-substituted porphyrins have been synthesizedand are currently evaluated for use in light-emitting diodesand possibly in solar cells.

Place, publisher, year, edition, pages
Stockholm: Kemi , 2003. , 32 p.
Trita-IOK, ISSN 1100-7974 ; 2003:78
Keyword [en]
oligothiophenes, synthesis, light-emitting diodes, field-effect transistors, photoluminescence, quantum efficiency
URN: urn:nbn:se:kth:diva-1591ISBN: 91-7283-497-8OAI: diva2:7517
NR 20140805Available from: 2003-08-25 Created: 2003-08-25Bibliographically approved

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