Issue 15, 2022

Photocontrolled reversible modulation of lanthanide luminescence in mesoporous silica nanospheres by photochromic diarylethenes

Abstract

Reversible modulation of the luminescence properties of Ln3+ ions has found many applications in the fields of biology, information and chemistry. However, it is still a challenge to efficiently remote control the luminescence of Ln3+ by light stimuli. In this paper, light-controlled luminescence ON–OFF switchable hybrid materials are successfully synthesized by loading Eu3+ complexes and photochromic diarylethenes (DAEs) into monodisperse mesoporous silica nanospheres (MSNs). Repeated cycles of UV and visible light irradiation switch the DAEs between closed-form and open-form isomers, where the closed-form DAEs (CF-DAEs) and Eu3+ complexes undergo Förster resonance energy transfer (FRET) due to the spectral overlap between the emission band of Eu3+ complexes and the absorbance band of CF-DAEs. Therefore, the luminescence of Eu3+ ions was repeatedly switched between ON and OFF states after successive UV and visible irradiation of the hybrid materials. This study opens the possibility of developing lanthanide-based photoswitches for optical anti-counterfeiting and data storage.

Graphical abstract: Photocontrolled reversible modulation of lanthanide luminescence in mesoporous silica nanospheres by photochromic diarylethenes

Supplementary files

Article information

Article type
Paper
Submitted
07 Jan 2022
Accepted
13 Mar 2022
First published
14 Mar 2022

J. Mater. Chem. C, 2022,10, 6036-6042

Photocontrolled reversible modulation of lanthanide luminescence in mesoporous silica nanospheres by photochromic diarylethenes

Q. Li, H. Xia, E. Li, J. Wang and Z. Wang, J. Mater. Chem. C, 2022, 10, 6036 DOI: 10.1039/D2TC00073C

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