Negative differential resistance in phenylene ethynylene oligomers

J. Cornil, Y. Karzazi, J. L. Brédas*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

131 Scopus citations


The origin of the sharp peak profile (i.e., negative differential resistance, NDR) observed in the I/V curves of three-ring phenylene ethynylene oligomers is a topic of major current interest. Here, quantum-chemical calculations are performed to analyze the evolution of the one-electron structure of an unsubstituted three-ring oligomer under the influence of a static electric field (which models the driving voltage applied in the experiments). The results indicate that the rotation of the central ring of the oligomer induces resonant tunneling processes over a limited voltage range. This can thus be responsible for the NDR signature observed experimentally.

Original languageEnglish (US)
Pages (from-to)3516-3517
Number of pages2
JournalJournal of the American Chemical Society
Issue number14
StatePublished - Apr 10 2002
Externally publishedYes

ASJC Scopus subject areas

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


Dive into the research topics of 'Negative differential resistance in phenylene ethynylene oligomers'. Together they form a unique fingerprint.

Cite this