%0 Generic %A Li, Zhen %A W. Y. Lam, Jacky %A Dong, Yongqiang %A Dong, Yuping %A H. Y. Sung, Herman %A Williams, Ian D. %A Tang, Ben Zhong %D 2006 %T Construction of Hyperbranched Polyphenylenes Containing Ferrocenyl Units by Alkyne Polycyclotrimerization %U https://acs.figshare.com/articles/dataset/Construction_of_Hyperbranched_Polyphenylenes_Containing_Ferrocenyl_Units_by_Alkyne_Polycyclotrimerization/3058510 %R 10.1021/ma0601823.s002 %2 https://ndownloader.figshare.com/files/4764271 %K vinyl unit %K Hyperbranched Polyphenylenes Containing Ferrocenyl Units %K polycyclotrimerization reaction %K E isomer %K redox activity %K Alkyne PolycyclotrimerizationCopolycyclotrimerizations %K ferrocenyl moiety %K hyperbranched copolymers %X Copolycyclotrimerizations of [(E/Z)-2-(1-ferrocenyl)vinyl]-m/p-phenylacetylene [(E/Z)-1(m/p)] with 1,8-nonadiyne (I) were studied. The conformation of the vinyl unit of 1 affected the polycyclotrimerization reaction dramatically:  while (Z)-1 failed to give any polymeric products, its E isomer underwent polymerization smoothly, producing hyperbranched copolymers hb-P1/I in good to high yields (up to 100 wt %). The hyperbranched copolymers are soluble in common organic solvents and are thermally stable, losing little of their weights when heated to high temperatures (up to 466 °C). The incorporation of the ferrocenyl moiety endowed the copolymers with redox activity. %I ACS Publications