Orientation-Controlled Growth of Pentacene Single Crystal Films on an Alignment Layer Using Liquid Crystal as Solvent

• Fujikake Hideo

  NHK Science & Technical Research Laboratories

• Suzuki Takaaki

  Department of Applied Physics, Tokyo University of Science

• Isaka Fumito

  Department of Applied Physics, Tokyo University of Science

• Sato Fumio

  NHK Science & Technical Research Laboratories

Abstract

We found that organic semiconductor pentacene is soluble in some liquid crystal materials with large π-electron conjugated groups. The solubility of pentacene in the heated cyanoterphenyl liquid crystal reached 20 wt%. We considered that both elongated molecular structures of pentacene and liquid crystal produce temporary molecular aggregates in the solution. We also clarified that a large molecular-alignment-controlled thin plate of single crystal pentacene up to 200 μm in length can be grown on a rubbed alignment layer of polyimide when the heated solution film was slowly cooled between glass substrates.

Journal

• Japanese Journal of Applied Physics

  Japanese Journal of Applied Physics 43 (4B), L536-L539, 2004

  The Japan Society of Applied Physics

Keywords

• pentacene
• single crystal growth
• liquid crystal solvent
• molecular-alignment control
• dichroic absorption

Details

• CRID: 1390001206264093952
• NII Article ID: 210000057236
• NII Article ID: 10012904067
• NII Book ID: AA11906093
• DOI: 10.1143/jjap.43.l536
• ISSN: 13474065
• ISSN: 00214922
• NDL BIB ID: 6931689
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I6931689
• Web Site: https://iopscience.iop.org/article/10.1143/JJAP.43.L536
• Web Site: https://iopscience.iop.org/article/10.1143/JJAP.43.L536/pdf
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed