Constructing N-Containing Poly(p-Phenylene) (PPP) Films Through A Cathodic-Dehalogenation Polymerization Method

Xiang Wang; Lei Zhang; Jinghang Wu; Miaomiao Xue; Qianfeng Gu; Junlei Qi; Fangyuan Kang; Qiyuan He; Xiaoyan Zhong; Qichun Zhang

doi:10.1002/smtd.202400185

Author(s)

Related Research Unit(s)

Detail(s)

Original language	English
Article number	2400185
Journal / Publication	Small Methods
Volume	8
Issue number	11
Online published	15 Apr 2024
Publication status	Published - 20 Nov 2024

Link(s)

DOI	DOI https://doi.org/10.1002/smtd.202400185 Final Published version
	Check@CityULib
Attachment(s)	Documents 210686758.pdf Final Published version, 1.61 MB, PDF Publisher's Copyright Statement This full text is made available under CC-BY 4.0. https://creativecommons.org/licenses/by/4.0/
Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-85190291462&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(241c0cd4-dcb3-4bba-8fdc-171aa3dbb07a).html

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.

© 2024 The Authors. Small Methods published by Wiley-VCH GmbH.