Interlinking Au nanoparticles in 2D arrays via conjugated dithiolated molecules

Details Interlinking Au nanoparticles in 2D arrays via conjugated dithiolated molecules Interlinking Au nanoparticles in 2D arrays via conjugated dithiolated molecules

Jun 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008njph...10f5019l&link_type=abstract

New Journal of Physics, Volume 10, Issue 6, pp. 065019 (2008).

Physics

5

Scientific paper

We investigate the importance of anchoring end-groups in conjugated oligomers for the formation of molecular junction networks. Oligo(phenylene ethynylene) with a single (OPE-MT) and two (OPE-DT) thiol end-groups have been inserted into self-assembled octanethiol-capped gold nanoparticle arrays by taking advantage of molecular exchange. Comparing the exchange for tens of devices, we observe significantly different final conductances for devices comprising monothiol- and dithiolated compounds. Our experimental results support the picture that OPE-DT covalently bridge neighboring nanoparticles via Au S bonds at both ends of the conjugated oligomer to form interlinked networks of molecular junctions.

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