期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 9, 期 15, 页码 9729-9734出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1ta01138c
关键词
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资金
- EC [GrapheneCore3 881603]
- Ningbo 3315 Innovation Programme [2019-17-C]
- Excellent Youth Foundation of Zhejiang Province of China [LR21E030001]
- Key Laboratory of Marine Materials and Related Technologies (CAS) [2020K10]
- National Natural Science Foundation of China [21703248]
- National Key Research and Development Program of China [2017YFA0700103, 2018YFA0704502]
- Strategic Priority Research Program of the Chinese Academy of Sciences [XDB20000000]
A solvent-mediated strategy is demonstrated for tailoring conjugated acetylenic polymers from metal-free to copper-metallated diacetylenic linkages. Metalation extends light absorption and promotes charge transport in acetylenic polymers, resulting in higher hydrogen-evolution photocurrent density on a photocathode. This work provides a feasible strategy for modulating the Cu-metalation of acetylenic polymers, potentially inspiring further studies in this field.
The covalent linking of acetylenes presents an important route for the fabrication of novel carbon-based scaffolds with potential utilities in a large variety of applications. Beyond that, the incorporation of metal atoms into the acetylenic scaffold could significantly improve its physical, chemical and electronic properties, but the synthesis of such metalated materials remains a challenge. Herein, we demonstrate a solvent-mediated strategy for tailoring conjugated acetylenic polymers from metal-free to copper-metallated diacetylenic linkages. The metalation extends light absorption and promotes charge transport in acetylenic polymers. As a result, the Cu-metallated acetylenic polymers on a photocathode exhibit a hydrogen-evolution photocurrent density of 7-70 mu A cm(-2) at 0.3 V vs. the reversible hydrogen electrode, which is superior to that of their metal-free counterpart. This work offers a feasible strategy to modulate the Cu-metalation of acetylenic polymers, which may inspire further studies in this field.
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