TY - JOUR A1 - Wessig, P. A1 - Schulze, T. A1 - Pfennig, A. A1 - Weidner, Steffen A1 - Prentzel, S. A1 - Schlaad, H. T1 - Thiol–ene polymerization of oligospiroketal rods T2 - Polymer Chemistry N2 - 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. PB - Royal Society of Chemistry KW - Oligospiroketals KW - Polymerization KW - MALDI-TOF MS PY - 2017 UR - https://opus4.kobv.de/opus4-bam/frontdoor/index/index/docId/42685 AN - OPUS4-42685 SN - 1759-9954 SN - 1759-9962 VL - 8 IS - 44 SP - 6879 EP - 6885 AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany