Diarylethene Isomerization by Using Triplet–Triplet Annihilation Photon Upconversion

Autor: Wera Larsson, Masakazu Morimoto, Masahiro Irie, Joakim Andréasson, Bo Albinsson
Rok vydání: 2023
Předmět:
Zdroj: Chemistry – A European Journal. 29
ISSN: 1521-3765
0947-6539
DOI: 10.1002/chem.202203651
Popis: Green-to-blue triplet-triplet annihilation photon upconversion using the well-studied upconversion pair 9,10-diphenylanthracene (DPA)/platinum octaethylporphyrin (PtOEP) is used to reversibly drive the photoisomerization of diarylethene (DAE) photoswitches using visible light. By carefully selecting the kinetic and spectral properties of the molecular system as well as the experimental geometry, a single green light source can be used to selectively trigger both the ring-opening and the ring-closing reactions, whilst also inducing fluorescence from the closed colored isomer that can be used as a readout to monitor the isomerization process in situ. The upconversion solution and the DAE solution are kept physically separated, allowing to characterize them both concomitantly and individually without further separation processes. The ring-closing reaction using upconverted photons is quantified and compared to the efficiency of direct isomerization using ultraviolet light.
Databáze: OpenAIRE
Externí odkaz: