Controllable Growth and Field-Effect Property of Monolayer to Multilayer Microstripes of an Organic Semiconductor

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2010
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Li, Liqiang
Gao, Peng
Schuermann, Klaus C.
Ostendorp, Stefan
Wang, Wenchong
Du, Chuan
Lei, Yong
Fuchs, Harald
Cola, Luisa de
Müllen, Klaus
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Journal of the American Chemical Society. 2010, 132(26), pp. 8807-8809. ISSN 0002-7863. eISSN 1520-5126. Available under: doi: 10.1021/ja1017267
Zusammenfassung

The controllable growth of partially aligned monolayer to multilayer micrometer stripes was demonstrated by adjusting the pulling speed in a dip-coating process. The number of molecular layers decreases with the increasing pulling speed. A lower pulling speed yields mixed multilayers (3−9 monolayers). It is noteworthy that pure monolayer and bilayer microstripes over large areas can be obtained at high pulling speeds. The stripe morphology strongly depends on the pulling speed or the number of molecular layers. XRD and confocal fluorescence measurements manifest that monolayer stripes are amorphous, while multilayer stripes (≥2) consist of crystalline states. FET devices were fabricated on these stripes. Monolayer stripes failed to reveal a field effect due to their amorphous state. In contrast, multilayer stripes exhibit good field-effect behavior. This study provides useful information for future molecular design in controlling molecular architectures. The controllable growth from monolayer to multilayer offers a powerful experimental system for fundamental research into the real charge accumulation and transporting layers for OFETs.

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ISO 690LI, Liqiang, Peng GAO, Klaus C. SCHUERMANN, Stefan OSTENDORP, Wenchong WANG, Chuan DU, Yong LEI, Harald FUCHS, Luisa de COLA, Klaus MÜLLEN, Lifeng CHI, 2010. Controllable Growth and Field-Effect Property of Monolayer to Multilayer Microstripes of an Organic Semiconductor. In: Journal of the American Chemical Society. 2010, 132(26), pp. 8807-8809. ISSN 0002-7863. eISSN 1520-5126. Available under: doi: 10.1021/ja1017267
BibTex
@article{Li2010-07-07Contr-12558,
  year={2010},
  doi={10.1021/ja1017267},
  title={Controllable Growth and Field-Effect Property of Monolayer to Multilayer Microstripes of an Organic Semiconductor},
  number={26},
  volume={132},
  issn={0002-7863},
  journal={Journal of the American Chemical Society},
  pages={8807--8809},
  author={Li, Liqiang and Gao, Peng and Schuermann, Klaus C. and Ostendorp, Stefan and Wang, Wenchong and Du, Chuan and Lei, Yong and Fuchs, Harald and Cola, Luisa de and Müllen, Klaus and Chi, Lifeng}
}
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