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Langmuir. 2013 Jan 29;29(4):1206-10. doi: 10.1021/la303609g. Epub 2013 Jan 15.

Sensitivity to molecular order of the electrical conductivity in oligothiophene monolayer films.

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1
Materials Science Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, USA.

Abstract

Using conducting probe atomic force microscopy (CAFM), we show that electrical conductivity in oligothiophene molecular films deposited on SiO(2)/Si wafers is extremely sensitive to degree of crystalline order in the film. By locally distorting the molecular order in the films through the controlled application of pressure with the AFM tip, the lateral charge transport was reduced by factors varying from 2 to 10, even when no changes in the height of the film could be observed.

PMID:
23244532
DOI:
10.1021/la303609g
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