Issue 12, 2022

Purely organic Vis-to-UV upconversion with an excited annihilator singlet beyond 4 eV

Abstract

The conversion of visible light into high-energy UV photons via sensitized triplet–triplet annihilation (TTA-UC) could pave the way for several energy-demanding applications. However, only a handful of annihilator chromophores for Vis-to-UV upconversion are known and the current limit for the excited-state energy of the UV emitter in TTA-UC schemes is below 4 eV, i.e., in the spectral region (>310 nm) where the sun still provides a considerable photon flux. Herein, we present a novel biphenyl-based annihilator with a highly fluorescent singlet state at 4.04 eV. This annihilator can be combined with a widely-used TADF sensitizer to yield an efficient blue-light (2.77 eV) driven upconversion system with unprecedented properties.

Graphical abstract: Purely organic Vis-to-UV upconversion with an excited annihilator singlet beyond 4 eV

Supplementary files

Article information

Article type
Communication
Submitted
06 اکتوٗبر 2021
Accepted
03 نومبر 2021
First published
04 نومبر 2021

J. Mater. Chem. C, 2022,10, 4568-4573

Purely organic Vis-to-UV upconversion with an excited annihilator singlet beyond 4 eV

T. J. B. Zähringer, M. Bertrams and C. Kerzig, J. Mater. Chem. C, 2022, 10, 4568 DOI: 10.1039/D1TC04782E

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements