Supramolecular graft copolymers based on 2,7-diamido-1,8-naphthyridines

H. Ohkawa, G.B.W.L. Ligthart, R.P. Sijbesma, E.W. Meijer

Research output: Contribution to journalArticleAcademicpeer-review

62 Citations (Scopus)
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Supramolecular graft copolymers containing a quadruple hydrogen bond motif in the main chain have been prepared by acyclic diene metathesis (ADMET) polymerization of an ,-diene monomer containing a 2,7-diamido-1,8-naphthyridine (Napy) unit. During the ADMET polymerization, a supramolecular protection strategy was applied in order to prevent naphthyridine coordination to the ruthenium catalyst. The 2-ureido-4[1H]-pyrimidinone (UPy) derivatives used as protecting groups also allowed for detection of the supramolecular graft copolymer with size exclusion chromatography. Deprotection by simple treatment with a polar solvent afforded free Napy binding sites on the main chain. Reversible grafting of UPy derivatives of various sizes onto the free poly-Napy was demonstrated by diffusion-ordered NMR experiments.
Original languageEnglish
Pages (from-to)1453-1459
Issue number5
Publication statusPublished - 2007


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