Journal
CHEMPHYSCHEM
Volume 7, Issue 8, Pages 1699-1704Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cphc.200600028
Keywords
charge transfer; molecular electronics; sensors; single-molecule studies; Stark effect
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A proposal for using single molecules as nanoprobes capable of detecting the trajectory of an elementary charge is discussed in detail. Presented numerical simulations prove that this singlemolecule technique allows determination of a three-dimensional single-electron displacement within a few seconds with an accurocy better than 0.006 nm. Surprisingly, this significantly exceeds the accuracy with which the probe;, molecule itself can be localized (given the same measuring time by means of single-molecule microscopy. It is also shown that the optimal concentration of probe molecules in the vicinity of:the electron (i.e. the concentration which provides the best accuracy of the inferred electron displacement) is of the order of 10(-5) m.
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