A Chemically Doped Naphthalenediimide-Bithiazole Polymer for n-Type Organic Thermoelectrics

Suhao Wang, Hengda Sun, Tim Erdmann, Gang Wang, Daniele Fazzi, Uwe Lappan, Yuttapoom Puttisong, Zhihua Chen, Magnus Berggren, Xavier Crispin, Anton Kiriy, Brigitte Voit, Tobin J Marks, Simone Fabiano, Antonio Facchetti

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

The synthesis of a novel naphthalenediimide (NDI)-bithiazole (Tz2)-based polymer [P(NDI2OD-Tz2)] is reported, and structural, thin-film morphological, as well as charge transport and thermoelectric properties are compared to the parent and widely investigated NDI-bithiophene (T2) polymer [P(NDI2OD-T2)]. Since the steric repulsions in Tz2 are far lower than in T2, P(NDI2OD-Tz2) exhibits a more planar and rigid backbone, enhancing π–π chain stacking and intermolecular interactions. In addition, the electron-deficient nature of Tz2 enhances the polymer electron affinity, thus reducing the polymer donor–acceptor character. When n-doped with amines, P(NDI2OD-Tz2) achieves electrical conductivity (≈0.1 S cm−1) and a power factor (1.5 µW m−1 K−2) far greater than those of P(NDI2OD-T2) (0.003 S cm−1 and 0.012 µW m−1 K−2, respectively). These results demonstrate that planarized NDI-based polymers with reduced donor–acceptor character can achieve substantial electrical conductivity and thermoelectric response.

Original languageEnglish
Article number1801898
JournalAdvanced Materials
Volume30
Issue number31
DOIs
Publication statusPublished - Aug 2 2018

Fingerprint

Polymers
Electron affinity
Amines
Charge transfer
naphthalenediimide
Thin films
Electrons
Electric Conductivity

Keywords

  • donor–acceptor polymers
  • doping
  • n-type polymers
  • NDI-based polymers
  • organic thermoelectrics

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Wang, S., Sun, H., Erdmann, T., Wang, G., Fazzi, D., Lappan, U., ... Facchetti, A. (2018). A Chemically Doped Naphthalenediimide-Bithiazole Polymer for n-Type Organic Thermoelectrics. Advanced Materials, 30(31), [1801898]. https://doi.org/10.1002/adma.201801898

A Chemically Doped Naphthalenediimide-Bithiazole Polymer for n-Type Organic Thermoelectrics. / Wang, Suhao; Sun, Hengda; Erdmann, Tim; Wang, Gang; Fazzi, Daniele; Lappan, Uwe; Puttisong, Yuttapoom; Chen, Zhihua; Berggren, Magnus; Crispin, Xavier; Kiriy, Anton; Voit, Brigitte; Marks, Tobin J; Fabiano, Simone; Facchetti, Antonio.

In: Advanced Materials, Vol. 30, No. 31, 1801898, 02.08.2018.

Research output: Contribution to journalArticle

Wang, S, Sun, H, Erdmann, T, Wang, G, Fazzi, D, Lappan, U, Puttisong, Y, Chen, Z, Berggren, M, Crispin, X, Kiriy, A, Voit, B, Marks, TJ, Fabiano, S & Facchetti, A 2018, 'A Chemically Doped Naphthalenediimide-Bithiazole Polymer for n-Type Organic Thermoelectrics', Advanced Materials, vol. 30, no. 31, 1801898. https://doi.org/10.1002/adma.201801898
Wang, Suhao ; Sun, Hengda ; Erdmann, Tim ; Wang, Gang ; Fazzi, Daniele ; Lappan, Uwe ; Puttisong, Yuttapoom ; Chen, Zhihua ; Berggren, Magnus ; Crispin, Xavier ; Kiriy, Anton ; Voit, Brigitte ; Marks, Tobin J ; Fabiano, Simone ; Facchetti, Antonio. / A Chemically Doped Naphthalenediimide-Bithiazole Polymer for n-Type Organic Thermoelectrics. In: Advanced Materials. 2018 ; Vol. 30, No. 31.
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