TY  - JOUR
A1  - Wessig, Pablo
A1  - Schulze, Tanja
A1  - Pfennig, Alexandra
A1  - Weidner, Steffen M.
A1  - Prentzel, Sascha
A1  - Schlaad, Helmut
T1  - Thiol-ene polymerization of oligospiroketal rods
JF  - 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.
Y1  - 2017
U6  - https://doi.org/10.1039/c7py01569k
SN  - 1759-9954
SN  - 1759-9962
VL  - 8
SP  - 6879
EP  - 6885
PB  - Royal Society of Chemistry
CY  - Cambridge
ER  -