Covalent incorporation of diphenylanthracene in oxotriphenylhexanoate organogels as a quasi-solid photon upconversion matrix
Artikel i vetenskaplig tidskrift, 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.

Författare

Deise Fernanda Barbosa de Mattos

Chalmers, Kemi och kemiteknik, Kemi och biokemi, Fysikalisk kemi

Ambra Dreos

Chalmers, Fysik, Grafen Flaggskepp

Mark Douglas Johnstone

Chalmers, Kemi och kemiteknik, Kemi och biokemi

Auckland University of Technology

August Runemark

Chalmers, Kemi och kemiteknik, Kemi och biokemi, Fysikalisk kemi

Claire Sauvée

Chalmers, Kemi och kemiteknik

Victor Gray

Uppsala universitet

Chalmers, Kemi och kemiteknik, Kemi och biokemi

Kasper Moth-Poulsen

Chalmers, Kemi och kemiteknik, Tillämpad kemi, Kasper Moth-Poulsen Group

Henrik Sundén

Göteborgs universitet

Chalmers, Kemi och kemiteknik, Kemi och biokemi

Maria Abrahamsson

Chalmers, Kemi och kemiteknik, Kemi och biokemi

Journal of Chemical Physics

0021-9606 (ISSN) 1089-7690 (eISSN)

Vol. 153 21 0029307

Drivkrafter

Hållbar utveckling

Styrkeområden

Nanovetenskap och nanoteknik (SO 2010-2017, EI 2018-)

Materialvetenskap

Ämneskategorier

Fysikalisk kemi

Atom- och molekylfysik och optik

Annan fysik

Fundament

Grundläggande vetenskaper

DOI

10.1063/5.0029307

PubMed

33291902

Mer information

Senast uppdaterat

2021-01-11