Download PDF Opens in a new window. Article suggestions will be shown in a dialog on return to ScienceDirect. ... Please enable JavaScript to use all the features on this page. ... The Cu(I)-catalyzed dipolar cycloaddition of azides and terminal alkynes ('click' chemistry) has been used as a mild and efficient stoppering reaction for the preparation of new copper(I)-complexed rotaxanes. ... In a preliminary communication, our group has recently described the ...