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Issue 43, 2016
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Exploring the self-assembly and energy transfer of dynamic supramolecular iridium-porphyrin systems

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Abstract

We present the first examples of dynamic supramolecular systems composed of cyclometalated Ir(III) complexes of the form of [Ir(C^N)2(N^N)]PF6 (where C^N is mesppy = 2-phenyl-4-mesitylpyridinato and dFmesppy = 2-(4,6-difluorophenyl)-4-mesitylpyridinato and N^N is 4,4′:2′,2′′:4′′,4′′′-quaterpyridine, qpy) and zinc tetraphenylporphyrin (ZnTPP), assembled through non-covalent interactions between the distal pyridine moieties of the qpy ligand located on the iridium complex and the zinc of the ZnTPP. The assemblies have been comprehensively characterized by a series of analytical techniques (1H NMR titration experiments, 2D COSY and HETCOR NMR spectra and low temperature 1H NMR spectroscopy) and the crystal structures have been elucidated by X-ray diffraction. The optoelectronic properties of the assemblies and the electronic interaction between the iridium and porphyrin chromophoric units have been explored with detailed photophysical measurements, supported by time-dependent density functional theory (TD-DFT) calculations.

Graphical abstract: Exploring the self-assembly and energy transfer of dynamic supramolecular iridium-porphyrin systems

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Article information


Submitted
01 Jul 2016
Accepted
22 Sep 2016
First published
22 Sep 2016

Dalton Trans., 2016,45, 17195-17205
Article type
Paper
Author version available

Exploring the self-assembly and energy transfer of dynamic supramolecular iridium-porphyrin systems

D. Rota Martir, G. J. Hedley, D. B. Cordes, A. M. Z. Slawin, D. Escudero, D. Jacquemin, T. Kosikova, D. Philp, D. M. Dawson, S. E. Ashbrook, I. D. W. Samuel and E. Zysman-Colman, Dalton Trans., 2016, 45, 17195
DOI: 10.1039/C6DT02619B

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