Implementing fluorescent MOFs as down-converting layers in hybrid light-emitting diodes

Angioni, Enrico, Marshall, Ross J., Findlay, Neil J., Bruckbauer, Jochen, Breig, Benjamin, Wallis, David J. ORCID: https://orcid.org/0000-0002-0475-7583, Martin, Robert W., Forgan, Ross S. and Skabara, Peter J. 2019. Implementing fluorescent MOFs as down-converting layers in hybrid light-emitting diodes. Journal of Materials Chemistry. C 7 (8) , pp. 2394-2400. 10.1039/C9TC00067D

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Abstract

One of the most important non-radiative relaxation processes that limits the quantum yield of a fluorophore is related to aggregation of the molecules in the solid-state causing excimer quenching. To limit this quenching mechanism, the fluorophore can be contained within a well-ordered 3D system that minimises aggregation through rigid bonds and spatial separation in a defined topological construct. Herein, the synthesis, characterisation and application as a down-converter of a new luminescent 3D material (MOF-BTBMBA) that incorporates a building block based on a benzothiadiazole (BT) derivative (BTBMBA) in a metal–organic framework (MOF) is presented. Notably, the photoluminescence quantum yield and hybrid LED performance are significantly improved for the MOF-based device compared to that prepared with the free ligand, highlighting the effectiveness of the rigid scaffold arrangement.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Engineering
Publisher:	Royal Society of Chemistry
ISSN:	2050-7526
Date of First Compliant Deposit:	18 February 2019
Date of Acceptance:	30 January 2019
Last Modified:	06 May 2023 05:38
URI:	https://orca.cardiff.ac.uk/id/eprint/119460

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