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P. Wessig, T. Schulze, A. Pfennig, S. M. Weidner, S. Prentzel, H. Schlaad
Thiol–ene polymerization of oligospiroketal rods
Polym. Chem. 2017, 8, 6879-6885
DOI: 10.1039/c7py01569k
The nucleophilic thiol–ene (thia-Michael) reaction between molecular rods bearing terminal thiols and bis-maleimides was investigated. The molecular rods have oligospiroketal (OSK) and oligospirothioketal (OSTK) backbones. Contrary to the expectations, cyclic oligomers were always obtained instead of linear rigid-rod polymers. Replacing the OS(T)K rods with a flexible chain yielded polymeric products, suggesting that the OS(T)K structure is responsible for the formation of cyclic products. The reason for the preferred formation of cyclic products is due to the presence of folded conformations, which have already been described for articulated rods.
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Welcome to the WEB-SITE of Chemistry at the University of Potsdam. We invite you to get acquainted with our research and teaching expertise, the outstanding equipment of our laboratories and already existing national and international collaborations. You find us in Wissenschaftspark Golm. If you would like to study Chemistry at the University of Potsdam or if you want to benefit from our research activities and collaborate with us, you are cordially welcome.
 
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