| Abstract
| - In this paper we present a joint experimental and theoretical approach for the study of the assembly of end-substituted oligothiophenes at surfaces with different polarities (i.e., mica vs graphite). Scanning probemicroscopy studies of (sub)monolayer deposits show various types of structures (one-dimensional fibrils,two-dimensional regular layers, and monolayers), depending on the nature of the end groups and the substrate.Using molecular modeling with an atomistic approach, we focus on the interplay between the molecule−molecule (and segment−segment) interactions and the molecule−substrate interactions and their influenceon the observed morphologies and the stacking geometry. Such information is relevant for controling thestructural order in thin layers of thiophene oligomers for use in field-effect transistor applications, for example,by modifying the nature of dielectric material over which those compounds are deposited.
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