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Zhou L, Gao RT, Zhang XJ, He K, Xu L, Liu N, Wu ZQ. A Versatile Method for the End-Functionalization of Polycarbenes. Macromol Rapid Commun 2021; 43:e2100630. [PMID: 34791733 DOI: 10.1002/marc.202100630] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 11/06/2021] [Indexed: 12/25/2022]
Abstract
End-functionalization is an effective strategy for constructing functional materials. A method for chain-end functionalization of helical polycarbenes is herein developed that relied on Sonogashira coupling reaction. In this work, a family of helical polycarbenes with controlled molecular mass (Mn ) and low polydispersity (Mw /Mn ) is readily prepared using Pd(II) and the Wei-Phos ligand as initiator. The Pd(II) complex is confirmed to remain at the chain end of polycarbene. Subsequently, a series of terminal alkyne derivatives with interesting functional groups, including the F atom, aldehyde, or anthracene groups, are synthesized. They could be installed at the chain end of polycarbene through Sonogashira coupling reaction catalyzed by the Pd(II) complex at the chain end. Moreover, a couple of hybrid block copolymers are easily obtained by installing terminal alkynes modified by another type of polymer. The structures of the isolated polymers are confirmed by 1 H nuclear magnetic resonance (1 H NMR), 19 F nuclear magnetic resonance (19 F NMR), 31 P nuclear magnetic resonance (31 P NMR), and Fourier transform infrared spectroscopy (FT-IR), respectively. The self-assembly properties of the hybrid block copolymers are also investigated by atomic force spectroscopy analysis. By the hereby developed method, various functional groups can be introduced at the chain end of helical polycarbenes for constructing functional polymer materials, moreover, the transition metal residues at the end of polymer chains can be easily removed.
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Affiliation(s)
- Li Zhou
- Anhui Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, School of Chemistry and Chemical Engineering, Department of Polymer Science and Engineering, Hefei University of Technology, Hefei, Anhui Province, 230009, China
| | - Run-Tan Gao
- Anhui Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, School of Chemistry and Chemical Engineering, Department of Polymer Science and Engineering, Hefei University of Technology, Hefei, Anhui Province, 230009, China
| | - Xin-Jie Zhang
- Anhui Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, School of Chemistry and Chemical Engineering, Department of Polymer Science and Engineering, Hefei University of Technology, Hefei, Anhui Province, 230009, China
| | - Kai He
- Anhui Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, School of Chemistry and Chemical Engineering, Department of Polymer Science and Engineering, Hefei University of Technology, Hefei, Anhui Province, 230009, China
| | - Lei Xu
- Anhui Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, School of Chemistry and Chemical Engineering, Department of Polymer Science and Engineering, Hefei University of Technology, Hefei, Anhui Province, 230009, China
| | - Na Liu
- Anhui Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, School of Chemistry and Chemical Engineering, Department of Polymer Science and Engineering, Hefei University of Technology, Hefei, Anhui Province, 230009, China
| | - Zong-Quan Wu
- Anhui Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, School of Chemistry and Chemical Engineering, Department of Polymer Science and Engineering, Hefei University of Technology, Hefei, Anhui Province, 230009, China
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Ting MYC, Yunker LPE, Chagunda IC, Hatlelid K, Vieweg M, McIndoe JS. A mechanistic investigation of the Suzuki polycondensation reaction using MS/MS methods. Catal Sci Technol 2021. [DOI: 10.1039/d1cy00743b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The Suzuki polycondensation can be studied in real time using MS/MS methods, even with the molecular weight of the reaction components changing with every turnover.
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Affiliation(s)
| | | | | | | | - Meghan Vieweg
- Department of Chemistry
- University of Victoria
- Victoria
- Canada
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