Fig. 3: Synthesis of polyyne polyrotaxanes.
From: Masked alkynes for synthesis of threaded carbon chains

a, Capped polymerization of 6·Ma or 6·Mb, followed by unmasking, was used to prepare polyyne polyrotaxanes. b, Analytical GPC trace of masked polyrotaxanes precursors in the Mb series. TMEDA, tetramethylethylenediamine.