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Infrared Spectroscopic Characterization of [2]Rotaxane Molecular Switch Tunnel Junction Devices

DeIonno, Erica and Tseng, Hsian-Rong and Harvey, Desmond D. and Stoddart, J. Fraser and Heath, James R. (2006) Infrared Spectroscopic Characterization of [2]Rotaxane Molecular Switch Tunnel Junction Devices. Journal of Physical Chemistry B, 110 (15). pp. 7609-7612. ISSN 1520-6106. doi:10.1021/jp0607723.

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Langmuir−Blodgett monolayers of a bistable [2]rotaxane were prepared at packing densities of 118, 73, and 54 Å^2/molecule. The monolayers were both characterized via infrared spectroscopy before and after evaporation of a 2 nm film of titanium and incorporated into molecular switch tunnel junction devices. The study suggests that the evaporation process primarily affects portions of the molecule exposed to the metal atom source. Thus, in tightly packed monolayers (73 and 54 Å^2/molecule), only the portions of the [2]rotaxane that are present at the molecule/air interface are clearly affected, leaving key functionality necessary for switching intact. Monolayers transferred at a lower pressure (118 Å^2/molecule) exhibit nonspecific damage and poor switching behavior following Ti deposition. These results indicate that tightly packed monolayers and sacrificial functionality displayed at the molecule/air interface are important design principles for molecular electronic devices.

Item Type:Article
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Stoddart, J. Fraser0000-0003-3161-3697
Heath, James R.0000-0001-5356-4385
Additional Information:© 2006 American Chemical Society. Received 6 February 2006. Published online 31 March 2006. Published in print 1 April 2006. This work was funded by the DARPA MolApps Program and by the MARCO Center for Materials, Structures and Devices. D.D.H. acknowledges Caltech's MURF program.
Funding AgencyGrant Number
Defense Advanced Research Projects Agency (DARPA)UNSPECIFIED
Microelectronics Advanced Research Corporation (MARCO)UNSPECIFIED
Caltech Minorities Undergraduate Research Fellowship (MURF)UNSPECIFIED
Issue or Number:15
Record Number:CaltechAUTHORS:20170711-110702121
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Official Citation:Infrared Spectroscopic Characterization of [2]Rotaxane Molecular Switch Tunnel Junction Devices Erica DeIonno, Hsian-Rong Tseng, Desmond D. Harvey, J. Fraser Stoddart, and James R. Heath The Journal of Physical Chemistry B 2006 110 (15), 7609-7612 DOI: 10.1021/jp0607723
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:78944
Deposited By: Ruth Sustaita
Deposited On:11 Jul 2017 21:11
Last Modified:15 Nov 2021 17:44

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