Martin Baumgarten
Max Planck Institute for Polymer Research, Germany
Title: Conjugated copolymers and their optimization for ambipolar field effect transistors
Biography
Biography: Martin Baumgarten
Abstract
Starting from cyclopentadithiophene-benzothisdiazoles, we varied the side chains from hexadecyl to branched decyl-tetradecyl ones and further included linear cis and trans-alkenes which had a major influence on the backbone packing. We further concluded to strengthen the acceptor part upon introducing thiadiazoloquinoxalines leading to a lowering of the LUMO levels and more suited ambipolar character. Upon condensation of the diamino benzothiadiazoles with benzodithiophene-dione phenthrene-dione and phenanthroline-dione the acceptor part could be further strengthened and open a variety of new copolymers and small molecule acceptor structures.
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