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Synthesis and characterization of poly[2]-catenanes containing rigid catenane segments

par Muscat, Dirk;Kohler, Werner;Räder, Hans Joachim;Martin, Kai;Mullins, Susan;Müller, Beate;Müllen, Klaus;Geerts, Yves
Référence Macromolecules, 32, 6, page (1737-1745)
Publication Publié, 1999

Article révisé par les pairs

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Résumé :

The synthesis and the structure elucidation by 1H NMR and IR spectroscopy, MALDI-TOF mass spectrometry, gel permeation chromatography, and viscometry of two novel poly[2]-catenanes, composed of rigid catenanes connected by semirigid spacers, are reported. The poly[2]-catenanes 4 and 5 differ by the geometry of the catenane units forming kinks between repeat units of angle β ≈ 60° and 150°, respectively. The geometry of the catenane units governs the shape of the molecular weight distribution, the conformational behavior, and the thermal properties of poly[2]-catenanes 4 and 5.