Anisotropy in the mobility and photogeneration of charge carriers in thin films of discotic hexabenzocoronenes, columnarly self-assembled on friction-deposited poly(tetrafluoroethylene)

J. Piris, M.G. Debije, N. Stutzmann, A.M. Craats, van de, M.D. Watson, K. Müllen, J.M. Warman

Research output: Contribution to journalArticleAcademicpeer-review

55 Citations (Scopus)

Abstract

Discotic derivatives of hexabenzocoronene macroscopically self-align on friction-deposited poly(tetrafluoroethylene) (see Figure for polarization microscopy image of a partially coated sample). Such films display highly anisotropic photoconductivity with charge transport along the columnar director favored by a factor of at least 20. The anisotropy in the optical absorption depends on the tilt angle of the aromatic core in the columns.
Original languageEnglish
Pages (from-to)1736-1740
JournalAdvanced Materials
Volume15
Issue number20
DOIs
Publication statusPublished - 2003

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