Amplifying (im)perfection: the impact of crystallinity in discrete and disperse block co-oligomers

B van Genabeek; B.A.G. Lamers; B.F.M. de Waal; M.H.C. van Son; A.R.A. Palmans; E.W. Meijer

doi:10.1021/jacs.7b08627

Amplifying (im)perfection: the impact of crystallinity in discrete and disperse block co-oligomers

B van Genabeek, B.A.G. Lamers, B.F.M. de Waal, M.H.C. van Son, A.R.A. Palmans, E.W. Meijer

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Abstract

Crystallinity is seldomly utilized as part of the microphase segregation process in ultralow-molecular-weight block copolymers. Here, we show the preparation of two types of discrete, semicrystalline block co-oligomers, comprising an amorphous oligodimethylsiloxane block and a crystalline oligo-l-lactic acid or oligomethylene block. The self-assembly of these discrete materials results in lamellar structures with unforeseen uniformity in the domain spacing. A systematic introduction of dispersity reveals the extreme sensitivity of the microphase segregation process toward chain length dispersity in the crystalline block.

Original language	English
Pages (from-to)	14869-14872
Number of pages	4
Journal	Journal of the American Chemical Society
Volume	139
Issue number	42
DOIs	https://doi.org/10.1021/jacs.7b08627
Publication status	Published - 25 Oct 2017

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AU - de Waal, B.F.M.

AU - van Son, M.H.C.

AU - Palmans, A.R.A.

AU - Meijer, E.W.

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AB - Crystallinity is seldomly utilized as part of the microphase segregation process in ultralow-molecular-weight block copolymers. Here, we show the preparation of two types of discrete, semicrystalline block co-oligomers, comprising an amorphous oligodimethylsiloxane block and a crystalline oligo-l-lactic acid or oligomethylene block. The self-assembly of these discrete materials results in lamellar structures with unforeseen uniformity in the domain spacing. A systematic introduction of dispersity reveals the extreme sensitivity of the microphase segregation process toward chain length dispersity in the crystalline block.

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Amplifying (im)perfection: the impact of crystallinity in discrete and disperse block co-oligomers

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