Aniés, Filip;
Hamilton, Iain;
De Castro, Catherine SP;
Furlan, Francesco;
Marsh, Adam V;
Xu, Weidong;
Pirela, Valentina;
... Heeney, Martin; + view all
(2024)
A Conjugated Carboranyl Main Chain Polymer with Aggregation-Induced Emission in the Near-Infrared.
Journal of the American Chemical Society
, 146
(19)
pp. 13607-13616.
10.1021/jacs.4c03521.
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Abstract
Materials exhibiting aggregation-induced emission (AIE) are both highly emissive in the solid state and prompt a strongly red-shifted emission and should therefore pose as good candidates toward emerging near-infrared (NIR) applications of organic semiconductors (OSCs). Despite this, very few AIE materials have been reported with significant emissivity past 700 nm. In this work, we elucidate the potential of ortho-carborane as an AIE-active component in the design of NIR-emitting OSCs. By incorporating ortho-carborane in the backbone of a conjugated polymer, a remarkable solid-state photoluminescence quantum yield of 13.4% is achieved, with a photoluminescence maximum of 734 nm. In contrast, the corresponding para and meta isomers exhibited aggregation-caused quenching. The materials are demonstrated for electronic applications through the fabrication of nondoped polymer light-emitting diodes. Devices employing the ortho isomer achieved nearly pure NIR emission, with 86% of emission at wavelengths longer than 700 nm and an electroluminescence maximum at 761 nm, producing a significant light output of 1.37 W sr-1 m-2
| Type: | Article |
|---|---|
| Title: | A Conjugated Carboranyl Main Chain Polymer with Aggregation-Induced Emission in the Near-Infrared |
| Location: | United States |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1021/jacs.4c03521 |
| Publisher version: | https://doi.org/10.1021/jacs.4c03521 |
| Language: | English |
| Additional information: | Copyright © 2024 The Authors. Published by American Chemical Society. This publication is licensed under CC-BY 4.0 (https://creativecommons.org/licenses/by/4.0/). |
| Keywords: | Diodes, Layers, Materials, Molecular Structure, Polymers |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10207537 |
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