Incorporation of 2,6-connected azulene units into the backbone of conjugated polymers: towards high-performance organic optoelectronic materials

Hanshen Xin, Congwu Ge, Xuechen Jiao, Xiaodi Yang, Kira Rundel, Christopher R. McNeill, Xike Gao

Research output: Contribution to journalArticleResearchpeer-review

100 Citations (Scopus)

Abstract

Azulene is a promising candidate for constructing optoelectronic materials. An effective strategy is presented to obtain high-performance conjugated polymers by incorporating 2,6-connected azulene units into the polymeric backbone, and two conjugated copolymers P(TBAzDI-TPD) and P(TBAzDI-TFB) were designed and synthesized based on this strategy. They are the first two examples for 2,6-connected azulene-based conjugated polymers and exhibit unipolar n-type transistor performance with an electron mobility of up to 0.42 cm2 V−1 s−1, which is among the highest values for n-type polymeric semiconductors in bottom-gate top-contact organic field-effect transistors. Preliminary all-polymer solar cell devices with P(TBAzDI-TPD) as the electron acceptor and PTB7-Th as the electron donor display a power conversion efficiency of 1.82 %.

Original languageEnglish
Pages (from-to)1322-1326
Number of pages5
JournalAngewandte Chemie - International Edition
Volume57
Issue number5
DOIs
Publication statusPublished - 26 Jan 2018

Keywords

  • all-polymer solar cells
  • azulenes
  • conjugation
  • organic field-effect transistor
  • polymers

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