title: Repeatable mechanochemical activation of dynamic covalent bonds in thermoplastic elastomers.
abstract: Repeated mechanical scission and recombination of dynamic covalent bonds incorporated in segmented polyurethane elastomers are demonstrated by utilizing a diarylbibenzofuranone-based mechanophore and by the design of the segmented polymer structures. The repeated mechanochemical reactions can accompany clear colouration and simultaneous fading.
authors.affiliation: Department of Chemical Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan. otsuka@polymer.titech.ac.jp and Graduate School of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
authors.forename: Keiichi
authors.initials: K
authors.lastname: Imato
authors.affiliation: Graduate School of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
authors.forename: Takeshi
authors.initials: T
authors.lastname: Kanehara
authors.affiliation: Graduate School of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
authors.forename: Shiki
authors.initials: S
authors.lastname: Nojima
authors.affiliation: Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
authors.forename: Tomoyuki
authors.initials: T
authors.lastname: Ohishi
authors.affiliation: Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
authors.forename: Yuji
authors.initials: Y
authors.lastname: Higaki
authors.affiliation: Graduate School of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan and Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
authors.forename: Atsushi
authors.initials: A
authors.lastname: Takahara
authors.affiliation: Department of Chemical Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan. otsuka@polymer.titech.ac.jp.
authors.forename: Hideyuki
authors.initials: H
authors.lastname: Otsuka