Conducting organic materials have long been investigated for application in a range of flexible electronic and optoelectronic devices. A key aspect to realising the potential of such materials is to understand and control the assembly of constituent molecules and resultant supramolecular structures – which are fundamentally related to the conductive properties. In this work we have used synchrotron surface diffraction to understand the self-assembly of drop-cast nanoflims of oligomeric derivatives of the conducting polymer poly(aniline) (PANI) on silicon. We found that by treating oligomeric derivatives with an acid surfactant, we simultaneously generated the conductive species through protonic doping and induced self-assembly into well-ordered lamellar morphologies with d-spacing ranging between 2.15 nm and 2.35 nm. The exact structural nature of the nanofilm was investigated as a function of the oligomer molecular architecture, the film thickness and the interfacial roughness.
|Translated title of the contribution||Understanding the nanoscale self-organisation of conducting organic materials|
|Publisher||Diamond Light Source, UK|
|Number of pages||5|
|Volume||Diamond Annual Report|
|Publication status||Published - 2012|