1,1-polymerization of acetylene

Tairan Cheng, Jiayao Qiu, Zedong Yang, Siju Li, Huanfeng Jiang and Shifa Zhu ()
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Tairan Cheng: Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology
Jiayao Qiu: Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology
Zedong Yang: Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology
Siju Li: Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology
Huanfeng Jiang: Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology
Shifa Zhu: Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology

Nature Communications, 2025, vol. 16, issue 1, 1-8

Abstract: Abstract The polymerization of alkynes has long been a cornerstone of materials science, yielding a plethora of π-bond-rich materials and underpinning the 2000 Nobel Prize in Chemistry. While 1,2-polymerization of alkynes via 1,2-addition has been extensively studied, the 1,1-polymerization of carbon carbon triple bonds remains a formidable challenge due to the necessity of an alkyne rearrangement step during polymerization. Here we report the 1,1-polymerization of acetylene gas through a Cd-catalyzed iterative 1,1-carboboration process, achieving a broad terminal functionalization scope and functional group compatibility. This product, 1,1-polyacetylene (1,1-PA), also named as dendralene, exhibits unique physical and chemical properties, including an explosive tendency, distinguishing it from the 1,2-polyacetylene (1,2-PA) counterparts.

Date: 2025
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DOI: 10.1038/s41467-025-64209-0

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