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Ruthenium Complexes with Strongly Electron-Donating Terpyridine Ligands: Effect of the Working Electrode on Electrochemical and Spectroelectrochemical Properties

Overview of attention for article published in Chemistry - A European Journal, June 2017
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Title
Ruthenium Complexes with Strongly Electron-Donating Terpyridine Ligands: Effect of the Working Electrode on Electrochemical and Spectroelectrochemical Properties
Published in
Chemistry - A European Journal, June 2017
DOI 10.1002/chem.201701431
Pubmed ID
Authors

Johannes Klein, Alexandra Stuckmann, Sebastian Sobottka, Lisa Suntrup, Margarethe van der Meer, Paul Hommes, Hans-Ulrich Reissig, Biprajit Sarkar

Abstract

The combination of 2,2':6',2″-terpyridines (tpy) and RuII is known to deliver molecular and supramolecular assemblies with remarkable properties. We present here new RuII complexes with modified tpy ligands substituted with varying numbers of dimethlyamino groups. Electrochemistry shows that the incorporation of the strongly electron-donating groups on the tpy ligands leads to a negative shift of the RuII oxidation potential by close to 1 V. The reductive electrochemical responses are strongly dependent on the nature of the working electrode, with glassy carbon and gold working electrodes showing the best results. These observations led us to develop a modified Optically Transparent Thin Layer Electrochemical (OTTLE) cell, based on a gold working electrode. The use of UV-vis-NIR spectroelectrochemical results with that OTTLE cell, together with simulations of the cyclic voltammograms, allow us to characterize four reduction steps in these complexes, the final two of which lead to bond activations at the ruthenium center. This observation is to the best of our knowledge unprecedented in coordinatively saturated complexes of type [Ru(tpy)2]2+. The various redox states of the complexes were characterized by EPR spectroelectrochemistry and through DFT calculations. The results presented here establish these substituted tpy ligands as highly attractive ligands in coordination chemistry, and display the utility of a gold-based OTTLE cell for spectroelectrochemical measurements.

Twitter Demographics

The data shown below were collected from the profiles of 2 tweeters who shared this research output. Click here to find out more about how the information was compiled.

Mendeley readers

The data shown below were compiled from readership statistics for 14 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Argentina 1 7%
Unknown 13 93%

Demographic breakdown

Readers by professional status Count As %
Student > Ph. D. Student 5 36%
Student > Bachelor 3 21%
Researcher 3 21%
Professor > Associate Professor 1 7%
Student > Postgraduate 1 7%
Other 0 0%
Unknown 1 7%
Readers by discipline Count As %
Chemistry 10 71%
Materials Science 1 7%
Biochemistry, Genetics and Molecular Biology 1 7%
Unknown 2 14%

Attention Score in Context

This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 03 September 2017.
All research outputs
#9,351,595
of 12,183,333 outputs
Outputs from Chemistry - A European Journal
#7,263
of 11,921 outputs
Outputs of similar age
#176,824
of 267,751 outputs
Outputs of similar age from Chemistry - A European Journal
#465
of 787 outputs
Altmetric has tracked 12,183,333 research outputs across all sources so far. This one is in the 20th percentile – i.e., 20% of other outputs scored the same or lower than it.
So far Altmetric has tracked 11,921 research outputs from this source. They receive a mean Attention Score of 3.3. This one is in the 32nd percentile – i.e., 32% of its peers scored the same or lower than it.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 267,751 tracked outputs that were published within six weeks on either side of this one in any source. This one is in the 27th percentile – i.e., 27% of its contemporaries scored the same or lower than it.
We're also able to compare this research output to 787 others from the same source and published within six weeks on either side of this one. This one is in the 30th percentile – i.e., 30% of its contemporaries scored the same or lower than it.