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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:, 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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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

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