Covalent incorporation of diphenylanthracene in oxotriphenylhexanoate organogels as a quasi-solid photon upconversion matrix
Journal article, 2020
Triplet-triplet annihilation photon upconversion (TTA-UC) in solid state assemblies are desirable since they can be easily incorporated into devices such as solar cells, thus utilizing more of the solar spectrum. Realizing this is, however, a significant challenge that must circumvent the need for molecular diffusion, poor exciton migration, and detrimental back energy transfer among other hurdles. Here, we show that the above-mentioned issues can be overcome using the versatile and easily synthesized oxotriphenylhexanoate (OTHO) gelator that allows covalent incorporation of chromophores (or other functional units) at well-defined positions. To study the self-assembly properties as well as its use as a TTA-UC platform, we combine the benchmark couple platinum octaethylporphyrin as a sensitizer and 9,10-diphenylanthracene (DPA) as an annihilator, where DPA is covalently linked to the OTHO gelator at different positions. We show that TTA-UC can be achieved in the chromophore-decorated gels and that the position of attachment affects the photophysical properties as well as triplet energy transfer and triplet-triplet annihilation. This study not only provides proof-of-principle for the covalent approach but also highlights the need for a detailed mechanistic insight into the photophysical processes underpinning solid state TTA-UC.
Author
Deise Fernanda Barbosa de Mattos
Chalmers, Chemistry and Chemical Engineering, Chemistry and Biochemistry
Ambra Dreos
Chalmers, Chemistry and Chemical Engineering, Applied Chemistry
Mark Douglas Johnstone
Chalmers, Chemistry and Chemical Engineering, Chemistry and Biochemistry
Auckland University of Technology
August Runemark
Chalmers, Chemistry and Chemical Engineering, Chemistry and Biochemistry
Claire Sauvée
Chalmers, Chemistry and Chemical Engineering
Victor Gray
Chalmers, Chemistry and Chemical Engineering, Chemistry and Biochemistry
Uppsala University
Kasper Moth-Poulsen
Chalmers, Chemistry and Chemical Engineering, Applied Chemistry
Henrik Sundén
University of Gothenburg
Chalmers, Chemistry and Chemical Engineering, Chemistry and Biochemistry
Maria Abrahamsson
Chalmers, Chemistry and Chemical Engineering, Chemistry and Biochemistry
Journal of Chemical Physics
0021-9606 (ISSN) 1089-7690 (eISSN)
Vol. 153 21 0029307Driving Forces
Sustainable development
Areas of Advance
Nanoscience and Nanotechnology
Materials Science
Subject Categories
Physical Chemistry
Atom and Molecular Physics and Optics
Other Physics Topics
Roots
Basic sciences
DOI
10.1063/5.0029307
PubMed
33291902