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 language | English (US) |
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Title of host publication | Materials Research Society Symposium - Proceedings |
Editors | S.C. Moss |
Pages | 211-215 |
Number of pages | 5 |
Volume | 728 |
State | Published - 2002 |
Event | Functional Nanostructured Materials through Multiscale Assembly and Novel Pattering Techniques - San Francisco, CA, United States Duration: Apr 2 2002 → Apr 5 2002 |
Other
Other | Functional Nanostructured Materials through Multiscale Assembly and Novel Pattering Techniques |
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Country/Territory | United States |
City | San Francisco, CA |
Period | 4/2/02 → 4/5/02 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials