Journal article Open Access

Cascade Ring-Opening/Ring-Closing Metathesis Polymerization of a Monomer Containing a Norbornene and a Cyclohexene Ring

Yasir, Mohammad; Kilbinger, Andreas F.M.


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    "doi": "10.1021/acsmacrolett.0c00882", 
    "description": "<p>Norbornene is polymerized extremely fast when reacted with Grubbs&rsquo; first (<strong>G1</strong>) or third generation catalyst (<strong>G3</strong>) because of its very high ring strain energy. Cyclohexene, on the other hand, cannot be polymerized using <strong>G1</strong> or <strong>G3</strong> due to its very low ring strain energy. Subsequently, the sequence-selective polymerization of these two monomers is extremely challenging. A sequence-selective cascade ring-opening/ring-closing metathesis polymerization of the monomer <strong>M</strong> containing both the norbornene and the cyclohexene ring using <strong>G1</strong> or <strong>G3</strong> is reported. The polymer structure was analyzed by <sup>1</sup>H NMR, <sup>1</sup>H&ndash;<sup>1</sup>H COSY, and <sup>1</sup>H&ndash;<sup>1</sup>H ROESY spectroscopy and MALDI-ToF mass spectrometry. Polymers with moderate molecular weight dispersities and good molecular weight control were achieved by varying the ratio between monomer <strong>M</strong> and <strong>G1</strong>.</p>", 
    "license": {
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    "title": "Cascade Ring-Opening/Ring-Closing Metathesis Polymerization of a Monomer Containing a Norbornene and a Cyclohexene Ring", 
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    "keywords": [
      "polymerization", 
      "ring-opening metathesis polymerization", 
      "cascade polymerization"
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    "publication_date": "2021-01-13", 
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        "affiliation": "University of Fribourg", 
        "name": "Yasir, Mohammad"
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        "name": "Kilbinger, Andreas F.M."
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