Issue 33, 2006

Effects of multiple ion loading on redox and luminescence properties of ruthenium trisphenanthroline crown ether hybrids

Abstract

Homoleptic and heteroleptic ruthenium trisphenanthrolines 1b–d were prepared with azacrown ethers attached to the 4,7-positions of the phenanthrolines to maximise the electronic communication between the ruthenium and the crown ethers as complexation sites. Redox and spectral data were processed to explain the non-steady trends in the absorption and emission spectra in the series 1b–d. Addition of Ba2+ entailed large shifts in the redox potential (up to 370 mV) and in the emission spectra (up to 87 nm). Due to the crowded situation of the azacrown ether units in 1d, this complex showed a non-linear behaviour both in the redox and emission properties upon loading with Ba2+ that is postulated to originate from the intermediate formation of sandwich type complexes.

Graphical abstract: Effects of multiple ion loading on redox and luminescence properties of ruthenium trisphenanthroline crown ether hybrids

Supplementary files

Article information

Article type
Paper
Submitted
12 Apr 2006
Accepted
23 May 2006
First published
07 Jun 2006

Dalton Trans., 2006, 4020-4028

Effects of multiple ion loading on redox and luminescence properties of ruthenium trisphenanthroline crown ether hybrids

M. Schmittel, H. Lin, E. Thiel, A. J. Meixner and H. Ammon, Dalton Trans., 2006, 4020 DOI: 10.1039/B605270C

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