(2002) 'Currentvoltage characteristics of an LB monolayer of didecylammonium tricyanoquinodimethanide measured between macroscopic gold electrodes.', Journal of materials chemistry., 12 (10). pp. 3167-3171. Further information on publisher's website:http://dx.doi.org/10.1039/b203789kPublisher's copyright statement:Additional information:
Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. monolayer onto a gold surface. Using the "cold-gold" evaporation technique, a set of several macroscopic gold electrode pads were evaporated atop the LB monolayer. Pads which had macroscopic defects were electrical short circuits, but across many pads finite electrical currents were observed as a function of applied bias; however, no obvious electrical rectification was found. The monolayer thickness on a gold substrate measured by XPS to be ~22 Å. Reflection-absorption infrared spectroscopy (RAIRS) indicates that the molecules have a preferred orientation in the film, but are not well ordered. Angleresolved X-ray photoelectron spectroscopy (XPS) suggests that many of the molecules 2 are oriented anti-parallel to each other, possibly because dipole-dipole forces favor such an anti-parallel orientation. This latter observation helps to explain why no electrical rectification was found.