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Efficient luminescence control in dithienylethene functionalized cyclen macrocyclic lanthanide complexes

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Abstract

We report the synthesis of an original ligand scaffold based on a dimethyl-cyclen platform Medo2pa with two dithienylethene units attached to each picolinate arm and the corresponding yttrium(III), europium(III) and ytterbium(III) complexes. All three compounds show reversible photochromism with high photo-conversions. Photoluminescence experiments demonstrate that this design is versatile and adapted for both europium and ytterbium emission switching when measured in frozen organic glasses at 77 K. The OFF/ON luminescence ratio is excellent in the case of europium (4 to 8%) and still quite good in the case of ytterbium (around 13%).

Graphical abstract: Efficient luminescence control in dithienylethene functionalized cyclen macrocyclic lanthanide complexes

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Article information


Submitted
24 Mar 2020
Accepted
24 Jun 2020
First published
24 Jun 2020

Inorg. Chem. Front., 2020, Advance Article
Article type
Research Article

Efficient luminescence control in dithienylethene functionalized cyclen macrocyclic lanthanide complexes

H. Al Sabea, N. Hamon, O. Galangau, L. Norel, O. Maury, F. Riobé, R. Tripier and S. Rigaut, Inorg. Chem. Front., 2020, Advance Article , DOI: 10.1039/D0QI00354A

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