Work

Diaryltriazolium Photoswitch: Reaching a Millisecond Cycloreversion with High Stability and NIR Absorption

Year: 2023

Type: article

Abstract: The exceptional thermal stability of diarylethene closed isomers enabled many applications but also prevented utilization in photochromic systems that require rapid thermal reversibility. Herein, we report the diaryltriazolium (DAT+) photoswitch undergoing thermal cycloreversion within a few milliseconds and absorption of the closed form in the near‐infrared region above 900 nm. Click chemistry followed by alkylation offers modular and fast access to the electron‐deficient DAT+ scaffold. In addition to excellent fatigue resistance, the introduced charge increases water solubility, rendering this photoswitch an ideal candidate for exploring biological applications.

Source: Angewandte Chemie

DOI: 10.1002/ange.202318015

Authors: Dušan Kolarski, Pit Steinbach, Christoph Bannwarth, Kristin Klaue, Stefan Hecht

Institutions: DWI – Leibniz Institute for Interactive Materials, Max Planck Institute for Multidisciplinary Sciences, RWTH Aachen University, Humboldt-Universität zu Berlin

Language: English

Topic: Photochromic and Fluorescence Chemistry

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $5,250