1418008-75-9Relevant academic research and scientific papers
Introduction of ferrocene-containing [2]rotaxanes onto siloxane, silsesquioxane and polysiloxanes via click chemistry
Yu, Gilbert,Suzaki, Yuji,Abe, Tomoko,Osakada, Kohtaro
, p. 1476 - 1482 (2013)
The reaction of N3(CH2)3Si(OTMS) 3 (TMS = SiMe3) with a dialkylammonium having hexynyl group 1, [FcCH2NH2CH2C6H 4-4-O(CH2)4CCH]PF6 (Fc = Fe(C 5H4)(C5H5)), in the presence of dibenzo[24]crown-8-ether (DB24C8) and [Cu{Fe(CN)4}]PF6 catalyst yielded the [2]rotaxane containing the dialkylammonium unit terminated by a bulky silyl group. Azides with a silsesquioxane group react similarly to form the corresponding [2]rotaxanes having a bulky silsesquioxane end group. The azide-functionalized polysiloxane, [-O-SiMe{(CH2)3N 3}-]n[-O-SiMe2-]m also undergoes a click reaction with 1 to produce the side chain polyrotaxane. Cyclic voltammograms of these rotaxanes and 1 [(DB24C8)1] show the Fe(ii)/Fe(iii) redox at the same potential, but with different current depending on their molecular weights. Addition of PdCl2(MeCN)2 to a solution of the side-chain polyrotaxane forms gel which regenerates the sol upon addition of PPh3. The Royal Society of Chemistry 2013.
