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The electronic transport properties of stacks of perylene‐bis(dicarboximide) (PDI) chromophores, covalently fixed to the side arms of rigid, helical polyisocyanopeptides, are studied using thin‐film transistors. In device architectures where the transistor channel lengths are somewhat greater than the average polymer chain length, carrier mobilities of order 10−3 cm2 V−1 s−1 at 350 K are found, which are limited by inter‐chain transport processes. The influence of π–π interactions on the material properties is studied by using PDIs with and without bulky substituents in the bay area. In order to attain a deeper understanding of both the electronic and the electronic‐transport properties of these systems, studies of self‐assembly on surfaces are combined with electronic characterization using Kelvin probe force microscopy, and also a theoretical study of electronic coupling. The use of a rigid polymer backbone as a …
Publication date: 
22 Dec 2008

Chris E Finlayson, Richard H Friend, Matthijs BJ Otten, Erik Schwartz, Jeroen JLM Cornelissen, Roeland JM Nolte, Alan E Rowan, Paolo Samori, Vicenzo Palermo, Andrea Liscio, Kalina Peneva, Klaus Müllen, Sara Trapani, David Beljonne

Biblio References: 
Volume: 18 Issue: 24 Pages: 3947-3955
Advanced functional materials