Groves, Lara M., Schotten, Christiane, Beames, Joseph  ORCID: https://orcid.org/0000-0002-5508-8236, Platts, James A. ORCID: https://orcid.org/0000-0002-1008-6595, Coles, Simon J., Horton, Peter N., Browne, Duncan L. ORCID: https://orcid.org/0000-0002-8604-229X and Pope, Simon J. A. ORCID: https://orcid.org/0000-0001-9110-9711
2017.
From ligand to phosphor: rapid, machine-assisted synthesis of substituted iridium(III) pyrazolate complexes with tuneable luminescence.
Chemistry - A European Journal
23
(39)
, pp. 9407-9418.
10.1002/chem.201701551
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Abstract
A first generation machine-assisted approach towards the preparation of hybrid ligand/metal materials has been explored. A comparison of synthetic approaches demonstrates that incorporation of both flow chemistry and microwave heating, can be successfully applied to the rapid synthesis of a range of new phenyl-1H-pyrazoles (ppz) substituted with electron withdrawing groups (-F, -CF3, -OCF3, -SF5), and these, in turn, can be translated in to heteroleptic complexes, [Ir(ppz)2(bipy)]BF4 (bipy = 2,2’-bipyridine). Microwave-assisted syntheses for the IrIII complexes allows isolation of spectroscopically pure species in less than 1 hour of reaction time from IrCl3. All new complexes have been explored photophysically (including nanosecond time-resolved transient absorption spectroscopy), electrochemically and by TD-DFT studies which show that the complexes possess ligand-dependent, and thus, tuneable green-yellow luminescence (500-560 nm), with quantum yields in the range 5-15 %.
| Item Type: | Article |
|---|---|
| Date Type: | Publication |
| Status: | Published |
| Schools: | Professional Services > Advanced Research Computing @ Cardiff (ARCCA) Schools > Chemistry |
| Subjects: | Q Science > QD Chemistry |
| Uncontrolled Keywords: | multistep continuous flow; phosphorescent materials |
| Publisher: | Wiley |
| ISSN: | 0947-6539 |
| Date of First Compliant Deposit: | 6 June 2017 |
| Date of Acceptance: | 19 May 2017 |
| Last Modified: | 06 Nov 2024 19:30 |
| URI: | https://orca.cardiff.ac.uk/id/eprint/100872 |
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