The Novel Diphenylamines - Basic Electroconducting Materials
|Joanna Cabaj 1, Krzysztof Idzik 1, Jadwiga Sołoducho 1, Mieczysław Łapkowski 2, Sylwia Golba 2|
1. Wrocław University of Technology, Department of Chemistry, Wybrzeże Wyspiańskiego 27, Wrocław 50-370, Poland
Conjugated polymers semiconductors with high charge carrier mobility air stability are of enormous interest for applications in organic electronics, particularly thin film transistors or photovoltaic cells. Although a large number of structurally diverse π- conjugated polymers have been investigated, only a small number have field effect mobility of holes or electrons.
Nearly all current p-type polymer semiconductors for OFETs with moderate to high hole mobility are poly(3-alkylthiophene)s and various thiophene-containing copolymers, that materials require, most notably good π-electron delocalization along the chain and a high degree of intramolecular order, good intramolecular π-stacking and important, low ionization potential.1
Polymers constructed from diphenylamine building blocks are versatile materials that exhibit a variety of advanced functional properties such as high hole-transporting and light-emitting efficiencies large two-photon absorption cross sections, high photorefractivity and photoconductivity, and large stabilization effect on high-spin polyradicals in organic magnets.2
In this study, a novel series of multi-diphenylamine substituted derivatives bearing an bisarylene as a functional core were synthesized. The key step in this type of synthesis 3 has been the Stille type coupling reaction between the N-alkyldibromodiphenylamine and tin derivatives of arylene as the best way for preparation of conjugated N-alkyldiphenylamine derivatives.
For this group of compounds were also investigated an electrochemical polymerization effect and widely adopted approach to prepare structurally ordered thin, electroconducting films by Langmuir – Blodgett technique.
Presentation: Poster at E-MRS Fall Meeting 2007, Symposium B, by Joanna Cabaj
See On-line Journal of E-MRS Fall Meeting 2007
Submitted: 2007-05-14 17:38 Revised: 2009-06-07 00:48
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