Tunable Emission from Triplet Fusion Upconversion in Diketopyrrolopyrroles

Journal of the American Chemical Society
Andrew B PunDaniel N Congreve

Abstract

Optical upconversion based on triplet fusion (TF), also known as triplet-triplet annihilation, is a process by which two or more low-energy photons are converted to one higher energy photon. This process requires two components, a sensitizer which absorbs the incident low-energy photons and an annihilator which emits the higher energy photons. While much attention has been given to the investigation of new types of sensitizers, very little work has been done on the exploration of new annihilators. In this work, we show that the singlet energy of diketopyrrolopyrroles (DPPs) can be altered by modifying the pendant aryl substituents to the core. This allows us to meet the energetic requirements necessary for TF upconversion and demonstrates DPPs as a new class of annihilator molecules. Using this new DPP platform, the output wavelength from upconversion can easily be tuned, which will greatly diversify the number of applications of DPPs in upconversion technologies.

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Citations

Dec 11, 2019·Chemistry : a European Journal·Elżbieta GońkaLutz Ackermann
Nov 15, 2019·Angewandte Chemie·Dmitrii F Perepichka, Ehsan Hamzehpoor
Dec 18, 2020·ChemPlusChem·David RaisJosef Michl
Mar 24, 2021·The Journal of Physical Chemistry Letters·Jianlei HanPengfei Duan
May 12, 2021·Journal of the American Chemical Society·Chen YeKarl Börjesson
Mar 14, 2019·The Journal of Physical Chemistry Letters·Yaoyao HanKaifeng Wu
Aug 19, 2021·Langmuir : the ACS Journal of Surfaces and Colloids·Maximilian L HupferMartin Presselt
Oct 15, 2019·Journal of the American Chemical Society·Ayako TokunagaJiro Abe
Nov 22, 2019·The Journal of Physical Chemistry Letters·Christian J ImperialeMark W B Wilson
Nov 12, 2020·Journal of the American Chemical Society·Kealan J FallonLuis M Campos
Feb 12, 2020·ACS Applied Materials & Interfaces·Wan SunZhong-Lin Lu
Oct 20, 2020·Journal of the American Chemical Society·Ling HuangGang Han

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