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Insulated molecular wires: inhibiting orthogonal contacts in metal complex based molecular junctions

Overview of attention for article published in Nanoscale, January 2017
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About this Attention Score

  • Good Attention Score compared to outputs of the same age (67th percentile)
  • Good Attention Score compared to outputs of the same age and source (79th percentile)

Mentioned by

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5 tweeters
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1 Facebook page

Citations

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4 Dimensions

Readers on

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25 Mendeley
Title
Insulated molecular wires: inhibiting orthogonal contacts in metal complex based molecular junctions
Published in
Nanoscale, January 2017
DOI 10.1039/c7nr01829k
Pubmed ID
Authors

Oday A. Al-Owaedi, Sören Bock, David C. Milan, Marie-Christine Oerthel, Michael S. Inkpen, Dmitry S. Yufit, Alexandre N. Sobolev, Nicholas J. Long, Tim Albrecht, Simon J. Higgins, Martin R. Bryce, Richard J. Nichols, Colin J. Lambert, Paul J. Low

Abstract

Metal complexes are receiving increased attention as molecular wires in fundamental studies of the transport properties of metal|molecule|metal junctions. In this context we report the single-molecule conductance of a systematic series of d(8) square-planar platinum(ii) trans-bis(alkynyl) complexes with terminal trimethylsilylethynyl (C[triple bond, length as m-dash]CSiMe3) contacting groups, e.g. trans-Pt{C[triple bond, length as m-dash]CC6H4C[triple bond, length as m-dash]CSiMe3}2(PR3)2 (R = Ph or Et), using a combination of scanning tunneling microscopy (STM) experiments in solution and theoretical calculations using density functional theory and non-equilibrium Green's function formalism. The measured conductance values of the complexes (ca. 3-5 × 10(-5)G0) are commensurate with similarly structured all-organic oligo(phenylene ethynylene) and oligo(yne) compounds. Based on conductance and break-off distance data, we demonstrate that a PPh3 supporting ligand in the platinum complexes can provide an alternative contact point for the STM tip in the molecular junctions, orthogonal to the terminal C[triple bond, length as m-dash]CSiMe3 group. The attachment of hexyloxy side chains to the diethynylbenzene ligands, e.g. trans-Pt{C[triple bond, length as m-dash]CC6H2(Ohex)2C[triple bond, length as m-dash]CSiMe3}2(PPh3)2 (Ohex = OC6H13), hinders contact of the STM tip to the PPh3 groups and effectively insulates the molecule, allowing the conductance through the full length of the backbone to be reliably measured. The use of trialkylphosphine (PEt3), rather than triarylphosphine (PPh3), ancillary ligands at platinum also eliminates these orthogonal contacts. These results have significant implications for the future design of organometallic complexes for studies in molecular junctions.

Twitter Demographics

The data shown below were collected from the profiles of 5 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 25 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 25 100%

Demographic breakdown

Readers by professional status Count As %
Student > Ph. D. Student 6 24%
Unspecified 5 20%
Researcher 4 16%
Student > Master 3 12%
Student > Postgraduate 1 4%
Other 6 24%
Readers by discipline Count As %
Chemistry 11 44%
Unspecified 6 24%
Physics and Astronomy 5 20%
Materials Science 2 8%
Engineering 1 4%
Other 0 0%

Attention Score in Context

This research output has an Altmetric Attention Score of 4. 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 08 July 2017.
All research outputs
#2,963,499
of 11,438,239 outputs
Outputs from Nanoscale
#589
of 3,071 outputs
Outputs of similar age
#83,401
of 259,620 outputs
Outputs of similar age from Nanoscale
#33
of 172 outputs
Altmetric has tracked 11,438,239 research outputs across all sources so far. This one has received more attention than most of these and is in the 73rd percentile.
So far Altmetric has tracked 3,071 research outputs from this source. They typically receive a little more attention than average, with a mean Attention Score of 5.1. This one has done well, scoring higher than 80% of its peers.
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 259,620 tracked outputs that were published within six weeks on either side of this one in any source. This one has gotten more attention than average, scoring higher than 67% of its contemporaries.
We're also able to compare this research output to 172 others from the same source and published within six weeks on either side of this one. This one has done well, scoring higher than 79% of its contemporaries.