Cao, D-K., Hu, J-S., Li, M-Q. et al. (3 more authors) (2015) Two bisthienylethene-Ir(III) complexes showing acid/base-induced structural transformation and on-off luminescence switching in solution. Dalton Transactions, 44 (48). pp. 21008-21015. ISSN 1477-9226
Abstract
Complexes [Ir(dfppy)2(pbdtiH)](PF6)·2CHCl3 (1-H) and [Ir(dfppy)2(pbdti)] (1) were synthesized by the reaction of bisthienylethene pbdtiH and an [Ir(dfppy)2Cl]2 dimer under neutral and basic conditions, respectively. Thus, the {Ir(dfppy)2}+ unit is coordinated by pbdtiH in 1-H, and by pbdti− in 1, which are confirmed by their crystal structures. The structures of 1-H and 1 could be interconverted in solution, upon alternately adding NEt3 and TFA, thus resulting in reversible luminescence switching between the on-state of 1-H and the off-state of 1 at room temperature. In addition, both 1-H and 1 show solid-state luminescence, with a broad emission at 534 nm and 525 nm, respectively. The free pbdtiH ligand shows photochromic behavior in CH2Cl2 solution. However, no photochromism has been observed in 1-H and 1, indicating that the coordination of the pbdtiH/pbdti− ligand to the {Ir(dfppy)2}+ unit could suppress their photochromic behaviors.
Metadata
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Copyright, Publisher and Additional Information: | © The Royal Society of Chemistry 2015 | ||||
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Institution: | The University of Sheffield | ||||
Academic Units: | The University of Sheffield > Faculty of Science (Sheffield) > Department of Chemistry (Sheffield) | ||||
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Depositing User: | Symplectic Sheffield | ||||
Date Deposited: | 28 Mar 2017 15:44 | ||||
Last Modified: | 28 Mar 2017 15:44 | ||||
Published Version: | http://dx.doi.org/10.1039/c5dt03809j | ||||
Status: | Published | ||||
Publisher: | Royal Society of Chemistry | ||||
Refereed: | Yes | ||||
Identification Number: | https://doi.org/10.1039/c5dt03809j | ||||
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