Title |
A Chemically Doped Naphthalenediimide‐Bithiazole Polymer for n‐Type Organic Thermoelectrics
|
---|---|
Published in |
Advanced Materials, June 2018
|
DOI | 10.1002/adma.201801898 |
Pubmed ID | |
Authors |
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 |
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. |
X Demographics
Geographical breakdown
Country | Count | As % |
---|---|---|
Sweden | 2 | 33% |
Spain | 1 | 17% |
Italy | 1 | 17% |
Unknown | 2 | 33% |
Demographic breakdown
Type | Count | As % |
---|---|---|
Science communicators (journalists, bloggers, editors) | 2 | 33% |
Members of the public | 2 | 33% |
Scientists | 2 | 33% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
Unknown | 140 | 100% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Student > Ph. D. Student | 29 | 21% |
Researcher | 18 | 13% |
Student > Master | 17 | 12% |
Student > Doctoral Student | 14 | 10% |
Student > Bachelor | 10 | 7% |
Other | 17 | 12% |
Unknown | 35 | 25% |
Readers by discipline | Count | As % |
---|---|---|
Chemistry | 39 | 28% |
Materials Science | 26 | 19% |
Physics and Astronomy | 13 | 9% |
Chemical Engineering | 9 | 6% |
Energy | 5 | 4% |
Other | 7 | 5% |
Unknown | 41 | 29% |