KOPS - The Institutional Repository of the University of Konstanz

4-Ferrocenylphenyl-Substituted Tritylium Dyes with Open and Interlinked C<sup>+</sup>Ar<sub>2 </sub> Entities : Redox Behavior, Electrochromism, and a Quantitative Study of the Dimerization of Their Neutral Radicals

4-Ferrocenylphenyl-Substituted Tritylium Dyes with Open and Interlinked C+Ar2 Entities : Redox Behavior, Electrochromism, and a Quantitative Study of the Dimerization of Their Neutral Radicals

Cite This

Files in this item

Files Size Format View

There are no files associated with this item.

CASPER, Larissa A., Lukas WURSTHORN, Marcel GEPPERT, Patrick ROSER, Michael LINSEIS, Malte DRESCHER, Rainer F. WINTER, 2020. 4-Ferrocenylphenyl-Substituted Tritylium Dyes with Open and Interlinked C+Ar2 Entities : Redox Behavior, Electrochromism, and a Quantitative Study of the Dimerization of Their Neutral Radicals. In: Organometallics. American Chemical Society (ACS). 39(17), pp. 3275-3289. ISSN 0276-7333. eISSN 1520-6041. Available under: doi: 10.1021/acs.organomet.0c00486

@article{Casper2020-09-144Ferr-51322, title={4-Ferrocenylphenyl-Substituted Tritylium Dyes with Open and Interlinked C+Ar2 Entities : Redox Behavior, Electrochromism, and a Quantitative Study of the Dimerization of Their Neutral Radicals}, year={2020}, doi={10.1021/acs.organomet.0c00486}, number={17}, volume={39}, issn={0276-7333}, journal={Organometallics}, pages={3275--3289}, author={Casper, Larissa A. and Wursthorn, Lukas and Geppert, Marcel and Roser, Patrick and Linseis, Michael and Drescher, Malte and Winter, Rainer F.} }

We report on seven 4-ferrocenylphenyl-substituted tritylium dyes Fc-C<sub>6</sub>H<sub>4</sub>-C<sup>+</sup>Ar<sub>2</sub> with either unlinked or interlinked aryl residues Ar, including congeners with six-membered (thio)xanthylium and seven-membered (dihydro)dibenzo[a,d]cycloheptatrienylium motifs. All complexes are intensely colored and show more or less intense absorption bands owing to charge transfer from the 4-ferrocenylphenyl donor to the C<sup>+</sup>Ar<sub>2</sub> acceptor unit as well as reversible electrochromism upon reduction and oxidation. The spectral profiles and redox potentials depend on whether or not the methylium center is incorporated into a 14-π-electron arene system. T-dependent EPR spectroscopy indicates that their one-electron-reduced neutral radicals dimerize. The ensuing monomer–dimer equilibria were studied by quantitative spin-counting methods, which revealed an unexpectedly large extent of 85.0–99.6% of dimerization. 2020-10-13T11:25:59Z eng Roser, Patrick Drescher, Malte Winter, Rainer F. Linseis, Michael 4-Ferrocenylphenyl-Substituted Tritylium Dyes with Open and Interlinked C<sup>+</sup>Ar<sub>2 </sub> Entities : Redox Behavior, Electrochromism, and a Quantitative Study of the Dimerization of Their Neutral Radicals Casper, Larissa A. Geppert, Marcel Roser, Patrick Winter, Rainer F. Casper, Larissa A. Wursthorn, Lukas Linseis, Michael 2020-10-13T11:25:59Z Drescher, Malte 2020-09-14 terms-of-use Geppert, Marcel Wursthorn, Lukas

This item appears in the following Collection(s)

Search KOPS


Browse

My Account