Polymerization of one-dimensional columnar assemblies made up of sorbate containing trialkyl-1,3,5-benzenetricarboxamide

M. Masuda, P. Jonkheijm, R.P. Sijbesma, E.W. Meijer

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Samenvatting

Polymerizable trialkyl benzene-1,3,5-carboxamide having sorbyl group (I) was synthesized and the self-assembly properties in cyclohexane and polymerizability within the assembly investigated. On cooling from boiling cyclohexane soln., I aggregated via amide hydrogen bonds, indicated by N-H stretching band in FT-IR spectrum. Further, evidence of columnar stacking of I in aggregate was provided by induced CD effect on internal Ph ring and amide group when a chiral chain homolog was added. The columnar assembly in cyclohexane was polymd. by UV right (365 nm) irradn. with presence of photoradical initiator (Irgacure 651). GPC anal. revealed that the d.p. based on no. av. mol. wt. was around 60. Under at. force microscopic observation, the polymd. I showed nano-sized fibers together with much bigger aggregates attributable to bundle of the monomeric and polymeric columns, while non-polymd. I gave an amorphous image due to its instability. Purified polymer gave only nano-sized fibers with high-axial-ratio (> 150) morphol. and uniform width (70 nm) and thickness (1.0 nm). [on SciFinder (R)]
Originele taal-2Engels
Pagina's (van-tot)589-590
Aantal pagina's2
TijdschriftPolymer Preprints
Volume44
Nummer van het tijdschrift1
StatusGepubliceerd - 2003

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