Single-component panchromatic white light generation, and tuneable excimer-like visible orange and NIR emission in a Dy quinolinolate complex

Dimitrije Mara; Luca Pilia; Maxim Van de Steen; Ivana Miletto; Min Zeng; Kristof Van Hecke; Angela Serpe; Paola Deplano; Rik Van Deun; Flavia Artizzu

doi:10.1039/D1TC04191F

Single-component panchromatic white light generation, and tuneable excimer-like visible orange and NIR emission in a Dy quinolinolate complex†

Dimitrije Mara,

^a Luca Pilia,

^b Maxim Van de Steen,^c Ivana Miletto,

^d Min Zeng,^e Kristof Van Hecke,

^c Angela Serpe,

^f Paola Deplano,

^f Rik Van Deun

^c and Flavia Artizzu

*^cd

Author affiliations

* Corresponding authors

^a Department of Chemistry, KU Leuven, Celestijnenlaan 200D, Leuven, Belgium

^b Department of Chemical, Mechanical and Materials Engineering, Cagliari State University, via Marengo 2, Cagliari, Italy

^c Department of Chemistry, Ghent University, Krijgslaan 281-S3, Ghent, Belgium

^d Department of Sciences and Technological Innovation, University of Eastern Piedmont “Amedeo Avogadro”, Viale Teresa Michel, 11, 15121 Alessandria, Italy
E-mail: flavia.artizzu@uniupo.it

^e Hubei Key Laboratory of Ferro & Piezoelectric Materials and Devices, Faculty of Physics & Electronic Sciences, Hubei University, Wuhan 430062, China

^f Department of Civil, Environmental and Architectural Engineering, Cagliari State University, via Marengo 2, Cagliari, Italy

Abstract

Panchromatic single-component pure white light generation with a PLQY of ∼14.5% is obtained from a dysprosium complex with the 5,7-dichloro-8-quinolinol ligand (HClQ) thanks to a peculiar orange-red excimer-like emission induced by π-staking interactions between discrete dimeric units in the crystal packing. The emission color is highly tunable by phase change and mechanical stimuli. Remarkably, this compound also displays Dy-centered NIR emission at telecommunication wavelengths upon photoexcitation over an extraordinarily broad spectral range.

Journal of Materials Chemistry C

Single-component panchromatic white light generation, and tuneable excimer-like visible orange and NIR emission in a Dy quinolinolate complex†

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Single-component panchromatic white light generation, and tuneable excimer-like visible orange and NIR emission in a Dy quinolinolate complex

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