title: Control of Imine Exchange Kinetics with Photoswitches to Modulate Self-Healing in Polysiloxane Networks by Light Illumination.
abstract: Various aldehyde-containing photoswitches have been developed whose reactivity toward amines can be controlled externally. A thermally stable bifunctional diarylethene, which in its ring-closed form exhibits imine formation accelerated by one order of magnitude, was used as a photoswitchable crosslinker and mixed with a commercially available amino-functionalized polysiloxane to yield a rubbery material with viscoelastic and self-healing properties that can be reversibly tuned by irradiation.
authors.affiliation: Department of Chemistry & IRIS Adlershof, Humboldt-Universität zu Berlin, Brook-Taylor Strasse 2, 12489, Berlin, Germany.
authors.forename: Michael
authors.initials: M
authors.lastname: Kathan
authors.affiliation: Department of Chemistry & IRIS Adlershof, Humboldt-Universität zu Berlin, Brook-Taylor Strasse 2, 12489, Berlin, Germany.
authors.forename: Petr
authors.initials: P
authors.lastname: Kovaříček
authors.affiliation: Department of Chemistry & IRIS Adlershof, Humboldt-Universität zu Berlin, Brook-Taylor Strasse 2, 12489, Berlin, Germany.
authors.forename: Christoph
authors.initials: C
authors.lastname: Jurissek
authors.affiliation: Department of Chemistry & IRIS Adlershof, Humboldt-Universität zu Berlin, Brook-Taylor Strasse 2, 12489, Berlin, Germany.
authors.forename: Antti
authors.initials: A
authors.lastname: Senf
authors.affiliation: Department of Chemistry & IRIS Adlershof, Humboldt-Universität zu Berlin, Brook-Taylor Strasse 2, 12489, Berlin, Germany.
authors.forename: Andre
authors.initials: A
authors.lastname: Dallmann
authors.affiliation: Federal Institute for Materials Research and Testing, Unter den Eichen 87, 12205, Berlin, Germany.
authors.forename: Andreas F
authors.initials: AF
authors.lastname: Thünemann
authors.affiliation: Department of Chemistry & IRIS Adlershof, Humboldt-Universität zu Berlin, Brook-Taylor Strasse 2, 12489, Berlin, Germany. sh@chemie.hu-berlin.de.
authors.forename: Stefan
authors.initials: S
authors.lastname: Hecht
keywords: adaptive materials; diarylethenes; dynamic covalent chemistry; photochromism; self-healing