Langdon-Jones, Emily E., Ward, Benjamin ![]() ![]() |
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Abstract
The stepwise synthesis of imidazo[4,5-f]-1,10-phenanthroline-based ligands that incorporate conjugated benzotriazole units are described. Corresponding cyclometalated Ir(III) complexes of the type [Ir(CˆN)2(L)]BF4 (where CˆN = cyclometalating ligand; L = phenanthroline type ligand) are reported. The complexes were characterized using a variety of techniques, including IR, NMR, UV-vis. spectroscopies, mass spectrometry and cyclic voltammetry. The [Ir(ppy)2(L)]BF4 complexes display luminescence in the visible region with the benzotriazole variants showing blue shifted emission around 495 nm. Supporting TD-DFT calculations predict that a mixture of MLCT and LLCT character may contribute to the HOMO-LUMO transition of the benzotriazole derivatives.
Item Type: | Article |
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Date Type: | Publication |
Status: | Published |
Schools: | Chemistry |
Publisher: | Elsevier |
ISSN: | 0022-328X |
Date of First Compliant Deposit: | 21 March 2018 |
Date of Acceptance: | 13 February 2018 |
Last Modified: | 06 Nov 2023 18:42 |
URI: | https://orca.cardiff.ac.uk/id/eprint/110081 |
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