کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5435448 | 1509350 | 2017 | 9 صفحه PDF | دانلود رایگان |
- Novel alkylated indolo[3,2-b]carbazole compounds are introduced.
- NHâ¯Ï interactions play a crucial role in determining their properties such as OFET behavior and solubility.
- Substitution matters.
- Pneumatic nozzle printing was used for creating crystalline printed thin films.
The synthesis, characterization, and field-effect transistor (FET) properties of new alkylated indolo[3,2-b]carbazole (ICz) based materials are reported. Dialkyl substitution at the 2,8-positions of the ICz core structure do not affect strong NHâ¯ Ï interactions, thus favoring a herringbone packing motif. OFET devices fabricated by compounds of this substitution pattern displayed a charge carrier mobility of â¼10â2 cm2 V sâ1. These interactions are suppressed when introducing substituents at the 5,11-positions, resulting in greatly enhanced solubility. A solution processable ICz derivative was finally used in a newly developed pneumatic printing setup to yield a crystalline film with aligned crystals along the printing direction.
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Journal: Synthetic Metals - Volume 228, June 2017, Pages 9-17