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Wang X, Zhang L, Wu J, Xue M, Gu Q, Qi J, Kang F, He Q, Zhong X, Zhang Q. Constructing N-Containing Poly(p-Phenylene) (PPP) Films Through A Cathodic-Dehalogenation Polymerization Method. Small Methods 2024:e2400185. [PMID: 38616739 DOI: 10.1002/smtd.202400185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Revised: 03/27/2024] [Indexed: 04/16/2024]
Abstract
Developing the films of N-containing unsubstituted poly(p-phenylene) (PPP) films for diverse applications is significant and highly desirable because the replacement of sp2 C atoms with sp2 N atoms will bring novel properties to the as-prepared polymers. In this research, an electrochemical-dehalogenation polymerization strategy is employed to construct two N-containing PPP films under constant potentials, where 2,5-diiodopyridine (DIPy) and 2,5-dibromopyrazine (DBPz) are used as starting agents. The corresponding polymers are named CityU-23 (for polypyridine) and CityU-24 (for polypyrazine). Moreover, it is found that both polymers can form films in situ on different conductive substrates (i.e., silicon, gold, ITO, and nickel), satisfying potential device fabrication. Furthermore, the as-obtained thin films of CityU-23 and CityU-24 exhibit good performance of alkaline hydrogen evolution reaction with the overpotential of 212.8 and 180.7 mV and the Tafel slope of 157.0 and 122.4 mV dec-1, respectively.
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Affiliation(s)
- Xiang Wang
- Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, Hong Kong SAR, 999077, P. R. China
| | - Lei Zhang
- Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, Hong Kong SAR, 999077, P. R. China
| | - Jinghang Wu
- Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, Hong Kong SAR, 999077, P. R. China
| | - Miaomiao Xue
- Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, Hong Kong SAR, 999077, P. R. China
| | - Qianfeng Gu
- Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, Hong Kong SAR, 999077, P. R. China
| | - Junlei Qi
- Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, Hong Kong SAR, 999077, P. R. China
| | - Fangyuan Kang
- Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, Hong Kong SAR, 999077, P. R. China
| | - Qiyuan He
- Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, Hong Kong SAR, 999077, P. R. China
| | - Xiaoyan Zhong
- Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, Hong Kong SAR, 999077, P. R. China
- City University of Hong Kong Matter Science Research Institute (Futian, Shenzhen), Shenzhen, 518048, P. R. China
- Nanomanufacturing Laboratory (NML), City University of Hong Kong Shenzhen Research Institute, Shenzhen, 518057, P. R. China
| | - Qichun Zhang
- Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, Hong Kong SAR, 999077, P. R. China
- Department of Chemistry, Center of Super-Diamond and Advanced Films (COSDAF), Hong Kong Institute for Clean Energy (HKICE), City University of Hong Kong, Kowloon, Hong Kong SAR, 999077, P. R. China
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