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 11904Subject Categories
Physical Chemistry
Atom and Molecular Physics and Optics
Other Chemistry Topics
DOI
10.1039/d2sc04230d