Molecular recognition in a thermoplastic elastomer

R.A. Koevoets; R.M. Versteegen; H. Kooijman; A.L. Spek; R.P. Sijbesma; E.W. Meijer

doi:10.1021/ja0451160

Molecular recognition in a thermoplastic elastomer

R.A. Koevoets, R.M. Versteegen, H. Kooijman, A.L. Spek, R.P. Sijbesma, E.W. Meijer

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Abstract

Selective incorporation of bisurea guests in thermoplastic elastomers with poly(tetrahydrofuran) soft blocks and bisurea containing hard blocks is observed when the distances between the urea groups of host and guest match. The incorporation leads to significant modulation of mechanical properties. With bisurea-functionalized dyes as guests, a strong difference in extractability by detergent solution was shown between dyes differing by just one methylene unit between urea groups. Upon elongation of elastomer films, strong differences in alignability of matching and nonmatching dyes were observed.

Original language	English
Pages (from-to)	2999-3003
Journal	Journal of the American Chemical Society
Volume	127
Issue number	9
DOIs	https://doi.org/10.1021/ja0451160
Publication status	Published - 2005

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abstract = "Selective incorporation of bisurea guests in thermoplastic elastomers with poly(tetrahydrofuran) soft blocks and bisurea containing hard blocks is observed when the distances between the urea groups of host and guest match. The incorporation leads to significant modulation of mechanical properties. With bisurea-functionalized dyes as guests, a strong difference in extractability by detergent solution was shown between dyes differing by just one methylene unit between urea groups. Upon elongation of elastomer films, strong differences in alignability of matching and nonmatching dyes were observed.",

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AU - Koevoets, R.A.

AU - Versteegen, R.M.

AU - Kooijman, H.

AU - Spek, A.L.

AU - Sijbesma, R.P.

AU - Meijer, E.W.

PY - 2005

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N2 - Selective incorporation of bisurea guests in thermoplastic elastomers with poly(tetrahydrofuran) soft blocks and bisurea containing hard blocks is observed when the distances between the urea groups of host and guest match. The incorporation leads to significant modulation of mechanical properties. With bisurea-functionalized dyes as guests, a strong difference in extractability by detergent solution was shown between dyes differing by just one methylene unit between urea groups. Upon elongation of elastomer films, strong differences in alignability of matching and nonmatching dyes were observed.

AB - Selective incorporation of bisurea guests in thermoplastic elastomers with poly(tetrahydrofuran) soft blocks and bisurea containing hard blocks is observed when the distances between the urea groups of host and guest match. The incorporation leads to significant modulation of mechanical properties. With bisurea-functionalized dyes as guests, a strong difference in extractability by detergent solution was shown between dyes differing by just one methylene unit between urea groups. Upon elongation of elastomer films, strong differences in alignability of matching and nonmatching dyes were observed.

U2 - 10.1021/ja0451160

DO - 10.1021/ja0451160

M3 - Article

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JO - Journal of the American Chemical Society

JF - Journal of the American Chemical Society

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Molecular recognition in a thermoplastic elastomer

Abstract

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