Research output: Contribution to Journal/Magazine › Journal article › peer-review
<mark>Journal publication date</mark> | 01/2008 |
---|---|
<mark>Journal</mark> | Nano Letters |
Issue number | 1 |
Volume | 8 |
Number of pages | 5 |
Pages (from-to) | 1-5 |
Publication Status | Published |
Early online date | 18/12/07 |
<mark>Original language</mark> | English |
We report on single molecule electron transport measurements of two oligophenylenevinylene (OPV3) derivatives placed in a nanogap between gold (Au) or lead (Pb) electrodes in a field effect transistor device. Both derivatives contain thiol end groups that allow chemical binding to the electrodes. One derivative has additional methylene groups separating the thiols from the delocalized π;-electron system. The insertion of methylene groups changes the open state conductance by 3-4 orders of magnitude and changes the transport mechanism from a coherent regime with finite zero-bias conductance to sequential tunneling and Coulomb blockade behavior.