• Citer

Poly[2]catenanes and cyclic oligo[2] catenanes containing alternating topological and covalent bonds: Synthesis and characterization

par Weidmann, Jean-Luc;Kern, Jeàn;Sauvage, Jean-Pierre;Muscat, Dirk;Mullins, Susan;Kohler, Werner;Rosenauer, Christine;Räder, Hans Joachim;Martin, Kai;Geerts, Yves
Référence Chemistry, 5, 6, page (1841-1851)
Publication Publié, 1999-06-04

Article révisé par les pairs

• Accès en ligne
• Détails
• Contenu
• Statistiques

Résumé :

Large bifunctionalized catenate and catenand, composed of macrocycles containing 45 atoms, have been synthesized and copolymerized with a terephthalic acid derivative to afford a cyclic oligo[2]catenand and a linear poly[2]catenate. Poly[2]catenand was obtained by demetalation of poly[2]-catenate. The molecular weight distribution of these polymers, which are composed of alternating topological and covalent bonds, has been characterized by gel permeation chromatography (GPC) with universal calibration, viscometry, and MALDI-TOF mass spectrometry. We were able to synthesize a poly[2]catenate and a poly[2]catenand with a degree of polymerization (DP) equal to 8-9. In addition, an upper value of the Kuhn segment length of poly[2]catenand has been determined and is discussed in the light of its structure.