Nanoparticle networks as chemoselective sensing devices

Details Nanoparticle networks as chemoselective sensing devices Nanoparticle networks as chemoselective sensing devices

2008-10-27

arxiv.org/abs/0810.4835v2

J. Chem. Phys. 130, 094702 (2009);

Physics

Condensed Matter

Materials Science

4 pages, 2 figures, text added, accepted for publication in J. Chem. Phys

Scientific paper

10.1063/1.3081185

We theoretically analyzed transport properties of a molecular network constructed of gold nanoparticles linked with oligophenylenevinulene (OPV) molecules. We showed that the conductance of such system was strongly reduced when trinitrotoluene (TNT) became attached to the OPV linkers in the network. The reported results are based on the ab inicio electronic structure calculations. These results corroborate and elucidate experiments which revealed significant drops in the conductance the network while the latter was exposed to TNT vapors. The results suggest that the detected sensitivity of transport characteristics of the considered nanoparticle network to TNT may be used to design a sensing nanodevice.

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