Making benzotrithiophene a stronger electron donor |
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Authors: | Guo Xin Wang Suhao Enkelmann Volker Baumgarten Martin Müllen Klaus |
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Institution: | Max-Planck-Institute for Polymer Research, Ackermannweg 10, D-55128, Mainz, Germany. |
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Abstract: | A new member of the benzotrithiophene family, benzo2,1-b:-3,4-b':5,6-c″]trithiophene (3a), and its alkyl substituted derivatives (3b-e) were synthesized and characterized. Their photophyscial, electrochemical, crystallographic, and self-assembly properties were described. Thin film structures varied widely with the exact nature of the alkyl substitution pattern, with decreasing self-assembly propensity with increasing alkyl chain length. The high HOMO levels and the coplanarity of these molecules show their potential as organic semiconductors and as donor components in donor-acceptor copolymers. |
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