Sensitized Two-NIR-Photon Z→E Isomerization of a Visible-Light-Addressable Bistable Azobenzene Derivative

Javier Moreno; Mario Gerecke; Lutz Grubert; Sergey A Kovalenko; Stefan Hecht

doi:10.1002/anie.201509111

Sensitized Two-NIR-Photon Z→E Isomerization of a Visible-Light-Addressable Bistable Azobenzene Derivative

Angew Chem Int Ed Engl. 2016 Jan 22;55(4):1544-7. doi: 10.1002/anie.201509111. Epub 2015 Dec 17.

Authors

Javier Moreno¹, Mario Gerecke¹, Lutz Grubert¹, Sergey A Kovalenko², Stefan Hecht³

Affiliations

¹ Department of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Straße 2, 12489, Berlin, Germany.
² Department of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Straße 2, 12489, Berlin, Germany. skovale@chemie.hu-berlin.de.
³ Department of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Straße 2, 12489, Berlin, Germany. sh@chemie.hu-berlin.de.

PMID: 26679769
DOI: 10.1002/anie.201509111

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.

Keywords: azobenzenes; energy transfer; near infrared; photochromism; two-photon photochemistry.

Publication types

Research Support, Non-U.S. Gov't