Organic molecules in an electrical circuit: An AFM study of a negative-differential-resistance molecule

Ganesh K. Ramachandran, Adam M. Rawlett, Theresa J. Hopson, Larry A. Nagahara, Raymond K. Tsui, Stuart Lindsay

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

2,5-di(phenylethynyl)-4′4″-dithiolate-l-nitrobenzene has been shown to exhibit negative differential resistance (NDR) and spontaneous switching when inserted into inert molecular monolayers between metal contacts. We have used conducting atomic force microscopy to measure the electronic properties of individual dithiolated molecules 2,5-di(phenylethynyl)-4′4″-dithiolate-l-nitrobenzene and 2,5-di(phenylethynyl)-4′4″-thioacetyl-benzene inserted into an alkanethiol monolayer and chemically bonded to gold nano-contacts to form a covalently-connected molecular circuit (bonded contacts). The data show qualitative agreement with previously published results for similar molecules deposited in a nanopore containing several hundred molecules, allowing us to make the important conclusion that the measured negative differential resistance (NDR) is native to the molecule and not an intermolecular phenomenon.

Original languageEnglish (US)
Title of host publicationMaterials Research Society Symposium - Proceedings
EditorsS.C. Moss
Pages211-215
Number of pages5
Volume728
StatePublished - 2002
EventFunctional Nanostructured Materials through Multiscale Assembly and Novel Pattering Techniques - San Francisco, CA, United States
Duration: Apr 2 2002Apr 5 2002

Other

OtherFunctional Nanostructured Materials through Multiscale Assembly and Novel Pattering Techniques
CountryUnited States
CitySan Francisco, CA
Period4/2/024/5/02

Fingerprint

Molecules
Nitrobenzene
Networks (circuits)
Monolayers
Nanopores
Benzene
Gold
Electronic properties
Atomic force microscopy
Metals
nitrobenzene

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

Cite this

Ramachandran, G. K., Rawlett, A. M., Hopson, T. J., Nagahara, L. A., Tsui, R. K., & Lindsay, S. (2002). Organic molecules in an electrical circuit: An AFM study of a negative-differential-resistance molecule. In S. C. Moss (Ed.), Materials Research Society Symposium - Proceedings (Vol. 728, pp. 211-215)

Organic molecules in an electrical circuit : An AFM study of a negative-differential-resistance molecule. / Ramachandran, Ganesh K.; Rawlett, Adam M.; Hopson, Theresa J.; Nagahara, Larry A.; Tsui, Raymond K.; Lindsay, Stuart.

Materials Research Society Symposium - Proceedings. ed. / S.C. Moss. Vol. 728 2002. p. 211-215.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Ramachandran, GK, Rawlett, AM, Hopson, TJ, Nagahara, LA, Tsui, RK & Lindsay, S 2002, Organic molecules in an electrical circuit: An AFM study of a negative-differential-resistance molecule. in SC Moss (ed.), Materials Research Society Symposium - Proceedings. vol. 728, pp. 211-215, Functional Nanostructured Materials through Multiscale Assembly and Novel Pattering Techniques, San Francisco, CA, United States, 4/2/02.
Ramachandran GK, Rawlett AM, Hopson TJ, Nagahara LA, Tsui RK, Lindsay S. Organic molecules in an electrical circuit: An AFM study of a negative-differential-resistance molecule. In Moss SC, editor, Materials Research Society Symposium - Proceedings. Vol. 728. 2002. p. 211-215
Ramachandran, Ganesh K. ; Rawlett, Adam M. ; Hopson, Theresa J. ; Nagahara, Larry A. ; Tsui, Raymond K. ; Lindsay, Stuart. / Organic molecules in an electrical circuit : An AFM study of a negative-differential-resistance molecule. Materials Research Society Symposium - Proceedings. editor / S.C. Moss. Vol. 728 2002. pp. 211-215
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