title: Sensitized Two-NIR-Photon Z→E Isomerization of a Visible-Light-Addressable Bistable Azobenzene Derivative.
abstract: Two-NIR-photon-triggered Z→E isomerization of an azobenzene was accomplished by covalently linking a two-photon-harvesting triarylamine antenna to a thermally stable ortho-fluorinated azobenzene derivative. The obtained photoswitch is fully addressable with visible and NIR light by using one-photon and two-photon excitation, respectively, with the latter offering enhanced penetration depth and improved spatial resolution.
authors.affiliation: Department of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Straße 2, 12489, Berlin, Germany.
authors.forename: Javier
authors.initials: J
authors.lastname: Moreno
authors.affiliation: Department of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Straße 2, 12489, Berlin, Germany.
authors.forename: Mario
authors.initials: M
authors.lastname: Gerecke
authors.affiliation: Department of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Straße 2, 12489, Berlin, Germany.
authors.forename: Lutz
authors.initials: L
authors.lastname: Grubert
authors.affiliation: Department of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Straße 2, 12489, Berlin, Germany. skovale@chemie.hu-berlin.de.
authors.forename: Sergey A
authors.initials: SA
authors.lastname: Kovalenko
authors.affiliation: Department of Chemistry, 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: azobenzenes; energy transfer; near infrared; photochromism; two-photon photochemistry