Hystersis of charge tunneling in assemblies of carboxylix acid-modified gold nanoparticles

M Biancardo, AJ Quinn, L Floyd, Paula Mendes, Simon Briggs, Jon Preece, CA Bignozzi, G Redmond

Research output: Contribution to journalArticle

11 Citations (Scopus)


We report on charge transport measurements through laterally contacted assemblies of Au nanoparticles capped with 11-mercaptoundecanoic acid ligands. Both alternating- and direct-current data indicate that although the nanoparticles behave as electrically isolated metallic islands, there is a significant influence from the nanoparticle environment, indicating the existence of a slow reorganization process linked to charge transport. On the basis of the observation of temperature-dependent hysteresis of charge tunneling, we propose that this process is due to proton transfer between the carboxylic acid tails of the ligands.
Original languageEnglish
Pages (from-to)8718-8722
Number of pages5
JournalThe Journal of Physical Chemistry Part B: Condensed Matter, Materials, Surfaces, Interfaces & Biophysical
Issue number18
Publication statusPublished - 1 Jan 2005


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