journal article·2024-05-28

Balancing Solubility and Thermoelectric Performance in π-Extended Poly(benzimidazoanthradiisoquinolinedione) Ladder-Type Conjugated Polymer

Qiang He, Xiaopeng Zhang, Teck Lip Dexter Tam, Jianing Wang, Hongming Chen, Sheau Wei Chien, Nguk Neng Tham, Xue Qi Koh, Johnathan Joo Cheng Lee, Ming Lin, Peng Xian Soh, Hong Meng, Wei Huang, Jianwei Xu

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Abstract

Herein, we report a new n -type ladder-type conjugated polymer, dichlorinated poly(benzimidazoanthradiisoquinolinedione) (Cl 2 –BAL), that possesses a slightly twisted polymer backbone and a preferred edge-on orientation. Upon n -doping, its maximum electrical conductivity and power factor in thermoelectric devices reached 1.1 ± 0.07 S cm –1 and 3.52 ± 0.37 μW m –1 K –2, respectively, and is almost on par with the best performing ladder-type conjugated polymer BBL. As compared to our previously reported tetrachlorinated analogue Cl 4 –BAL, our results demonstrate that the chlorine atoms can influence not only the torsion angle but also the orientation and π–π stacking, which in turn dramatically affects its performance.
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Research context

OpenAlex topics: Perovskite Materials and Applications · Conducting polymers and applications · Organic Electronics and Photovoltaics

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Frontiers Science Center for Flexible Electronics (FSCFE), Institute of Flexible Electronics (IFE), Northwestern Polytechnical University (NPU), 127 West Youyi Road, Xi’an 710072, People’s Republic of China

Institute of Materials Research and Engineering (IMRE), Agency of Science Technology and Research (A*STAR), 2 Fusionopolis Way, Innovis, Singapore 138634, Singapore

School of Advanced Materials, Peking University Shenzhen Graduate School, 2199 Lishui Road, Shenzhen 518055, People’s Republic of China

Institute of Sustainability for Chemical, Energy and Environment (ISCE2), Agency of Science, Technology and Research (A*STAR), 1 Pesek Road, Singapore 627833, Singapore

College of Materials Science and Engineering, Fuzhou University, Fuzhou 350116, People’s Republic of China

School of Electronics and Information, Northwestern Polytechnical University, 127 West Youyi Road, Xi’an 710072, People’s Republic of China

Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore

Funding

Shenzhen Fundamental Research Program · Science and Engineering Research Council · Guangdong Basic and Applied Basic Research Foundation · Natural Science Basic Research Program of Shaanxi

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