Metal‐Free Cycloaddition of Internal Alkynes and Multifunctional Azides Under Solvent‐Free Conditions. Issue 17 (8th July 2014)

• Record Type: Journal Article
• Authors: Sandmann, Benedict; Happ, Bobby; Vitz, Jürgen; Paulus, Renzo M.; Hager, Martin D.; Burtscher, Peter; Moszner, Norbert; Schubert, U. S.
• Is Part Of: Macromolecular chemistry and physics. Volume 215:Issue 17(2014:Sep.)
• Page Start: 1603
• Page End: 1608
• Publication Date: 2014-07-08
• Subjects: Polymers -- Periodicals; Polymerization -- Periodicals; Synthetic products -- Periodicals; Macromolecules -- Periodicals; 547.7
• DOI: 10.1002/macp.201400149
• Languages: English
• ISSNs: 1022-1352

Abstract

<abstract abstract-type="main" xml:lang="en"> <title> <x xml:space="preserve">Abstract</x> </title> <p>The synthesis of three different electron‐deficient internal alkynes for the metal‐free 1, 3‐dipolar azide–alkyne cycloaddition is shown. The alkynes are polymerized with several multifunctional azides and the reaction enthalpy (Δ<italic>H</italic>) is investigated by differential scanning calorimetry (DSC). The mechanical properties of the resulting polymers are analyzed using nanoindentation. The polymerization results in hard materials with an <italic>E</italic>‐modulus of maximum 2.5 GPa, which make them interesting in particular for biomedical applications. <boxed-text content-type="graphic" position="anchor" orientation="portrait"><graphic position="anchor" mimetype="image" xlink:href="ark:/27927/pgh177nh8p4" orientation="portrait" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" /></boxed-text></p> </abstract>