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Redox-active and semi-conducting donor–acceptor conjugated microporous polymers as metal-free ORR catalysts
- Roy, Syamantak, Bandyopadhyay, Arkamita, Das, Mrinmay, Ray, Partha Pratim, Pati, Swapan K., Maji, Tapas Kumar
- Journal of materials chemistry 2018 v.6 no.14 pp. 5587-5591
- catalysts, electrochemistry, energy conversion, oxygen, polymers, porous media
- Metal-free pristine conjugated microporous polymers (CMPs) catalyzing electrochemical oxygen reduction reaction (ORR) are still rare. We therefore put forward a design strategy to fabricate electrochemically active CMPs by linking donor nodes and acceptor spacers. The two new CMPs have been structurally well characterized and show semi-conduction and redox-activity. As a proof of concept, we show that both the CMPs have appreciable ORR activity and catalytic stability over time. Further, DFT calculations reveal the origin of the semi-conducting property and also the mode of oxygen binding to the catalytic centres. This work shows the potential application of pristine metal-free CMPs in energy conversion processes.