January 13, 2021 Journal article Open Access

Yasir, Mohammad; Kilbinger, Andreas F.M.

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  <identifier identifierType="URL">https://zenodo.org/record/5946824</identifier>
  <creators>
    <creator>
      <creatorName>Yasir, Mohammad</creatorName>
      <givenName>Mohammad</givenName>
      <familyName>Yasir</familyName>
      <affiliation>University of Fribourg</affiliation>
    </creator>
    <creator>
      <creatorName>Kilbinger, Andreas F.M.</creatorName>
      <givenName>Andreas F.M.</givenName>
      <familyName>Kilbinger</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0002-2929-7499</nameIdentifier>
    </creator>
  </creators>
  <titles>
    <title>Cascade Ring-Opening/Ring-Closing Metathesis Polymerization of a Monomer Containing a Norbornene and a Cyclohexene Ring</title>
  </titles>
  <publisher>Zenodo</publisher>
  <publicationYear>2021</publicationYear>
  <subjects>
    <subject>polymerization</subject>
    <subject>ring-opening metathesis polymerization</subject>
    <subject>cascade polymerization</subject>
  </subjects>
  <dates>
    <date dateType="Issued">2021-01-13</date>
  </dates>
  <resourceType resourceTypeGeneral="JournalArticle"/>
  <alternateIdentifiers>
    <alternateIdentifier alternateIdentifierType="url">https://zenodo.org/record/5946824</alternateIdentifier>
  </alternateIdentifiers>
  <relatedIdentifiers>
    <relatedIdentifier relatedIdentifierType="DOI" relationType="IsIdenticalTo">10.1021/acsmacrolett.0c00882</relatedIdentifier>
  </relatedIdentifiers>
  <rightsList>
    <rights rightsURI="https://creativecommons.org/licenses/by/4.0/legalcode">Creative Commons Attribution 4.0 International</rights>
    <rights rightsURI="info:eu-repo/semantics/openAccess">Open Access</rights>
  </rightsList>
  <descriptions>
    <description descriptionType="Abstract">&lt;p&gt;Norbornene is polymerized extremely fast when reacted with Grubbs&amp;rsquo; first (&lt;strong&gt;G1&lt;/strong&gt;) or third generation catalyst (&lt;strong&gt;G3&lt;/strong&gt;) because of its very high ring strain energy. Cyclohexene, on the other hand, cannot be polymerized using &lt;strong&gt;G1&lt;/strong&gt; or &lt;strong&gt;G3&lt;/strong&gt; 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 &lt;strong&gt;M&lt;/strong&gt; containing both the norbornene and the cyclohexene ring using &lt;strong&gt;G1&lt;/strong&gt; or &lt;strong&gt;G3&lt;/strong&gt; is reported. The polymer structure was analyzed by &lt;sup&gt;1&lt;/sup&gt;H NMR, &lt;sup&gt;1&lt;/sup&gt;H&amp;ndash;&lt;sup&gt;1&lt;/sup&gt;H COSY, and &lt;sup&gt;1&lt;/sup&gt;H&amp;ndash;&lt;sup&gt;1&lt;/sup&gt;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 &lt;strong&gt;M&lt;/strong&gt; and &lt;strong&gt;G1&lt;/strong&gt;.&lt;/p&gt;</description>
  </descriptions>
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