Mechanically interlocked polymers are expected to show different phase properties compared to conventional properties. Progress in this area has been limited by the small quantities of interlocked polymers obtained by conventional techniques used to prepare them. To provide a solution to this limitation we have developed an efficient route to gram scale quantities of mechanically interlocked star polymers. The utility of thiol-malemide chemistry was demonstarted by synthesisizing three and four armed [2]rotaxane macroinitiators under base catalysed conditions. The route takes advantage of recently reported allyl-functionalized DNP38C10 macrocycles as well as selective thiol-ene chemistry.Temporary silyl stoppers were then removed by fluoride ion deprotection in order to study the effect of the length of guest polymer on the [2]rotaxane polymer phase properties.Glass transistions, thermal properties were measured using using DSC. Polydispersity was measured by GPC. All results were supported by NMR and MASS spectroscopy.

Novel route to synthesize polymers containing single mechanical bond

249th National Meeting (2015)

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