Nanobelt self-assembly from an organic n-type semiconductor: Propoxyethyl-PTCDI

Kaushik Balakrishnan, Aniket Datar, Randy Oitker, Hao Chen, Jianmin Zuo, Ling Zang

Research output: Contribution to journalArticlepeer-review


Nanobelt structures have been fabricated for an n-type semiconductor molecule, N,N′-di(propoxyethyl)perylene-3,4,9,10-tetracarboxylic diimide (PTCDI). The short alkyloxy side chain not only affords effective π-π stacking in polar solvents for self-assembling but also provides sufficient solubility in nonpolar solvents for solution processing. As revealed by both AFM and electron microscopies, the nanobelts have an approximately rectangular cross section, with a typical thickness of about 100 nm and a width in the range of 300-500 nm. The length of the nanobelts ranges from 10 to a few tens of micrometers. The highly organized molecular packing (uniaxial crystalline phase) has been deduced from the measurement of electron diffraction and polarized microscopy imaging. The detected optical axis is consistent with the one-dimensional stacking of the molecules.

Original languageEnglish (US)
Pages (from-to)10496-10497
Number of pages2
JournalJournal of the American Chemical Society
Issue number30
StatePublished - Aug 3 2005

ASJC Scopus subject areas

  • Catalysis
  • General Chemistry
  • Biochemistry
  • Colloid and Surface Chemistry


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