Far-red triplet sensitized Z-to-E photoswitching of azobenzene in bioplastics
Journal article, 2022

We report the first example of direct far-red triplet sensitized molecular photoswitching in a condensed phase wherein a liquid azobenzene derivative (Azo1) co-assembled within a liquid surfactant-protein film undergoes triplet sensitized Z-to-E photoswitching upon far-red/red light excitation in air. The role of triplet sensitization in photoswitching has been confirmed by quenching of sensitizer phosphorescence by Z-Azo1 and temperature-dependent photoswitching experiments. Herein, we demonstrate new biosustainable fabrication designs to address key challenges in solid-state photoswitching, effectively mitigating chromophore aggregation and requirement of high energy excitations by dispersing the photoswitch in the trapped liquid inside the solid framework and by shifting the action spectrum from blue-green light (450-560 nm) to the far-red/red light (740/640 nm) region.

Author

Pankaj Bharmoria

University of Gothenburg

Shima Ghasemi

Chalmers, Chemistry and Chemical Engineering, Chemistry and Biochemistry

Fredrik Edhborg

Chalmers, Chemistry and Chemical Engineering, Chemistry and Biochemistry

Raul Losantos

University of La Rioja

Centre national de la recherche scientifique (CNRS)

Paris Cité University

Zhihang Wang

Chalmers, Chemistry and Chemical Engineering, Applied Chemistry

Anders Mårtensson

Chalmers, Chemistry and Chemical Engineering, Applied Chemistry

Masa-aki Morikawa

Kyushu University

Nobuo Kimizuka

Kyushu University

Umit Isci

Gebze Institute of Technology (GYTE)

Fabienne Dumoulin

Acibadem University

Bo Albinsson

Chalmers, Chemistry and Chemical Engineering, Chemistry and Biochemistry

Kasper Moth-Poulsen

Chalmers, Chemistry and Chemical Engineering, Applied Chemistry

Chemical Science

2041-6520 (ISSN) 2041-6539 (eISSN)

Vol. 13 11904

Subject Categories

Physical Chemistry

Atom and Molecular Physics and Optics

Other Chemistry Topics

DOI

10.1039/d2sc04230d

More information

Latest update

10/26/2023