↓ Skip to main content

PNAS

Correlating the motion of electrons and nuclei with two-dimensional electronic–vibrational spectroscopy

Overview of attention for article published in Proceedings of the National Academy of Sciences of the United States of America, June 2014
Altmetric Badge

About this Attention Score

  • In the top 5% of all research outputs scored by Altmetric
  • High Attention Score compared to outputs of the same age (97th percentile)
  • High Attention Score compared to outputs of the same age and source (83rd percentile)

Mentioned by

news
7 news outlets
blogs
3 blogs
twitter
1 X user

Citations

dimensions_citation
167 Dimensions

Readers on

mendeley
186 Mendeley
citeulike
1 CiteULike
Title
Correlating the motion of electrons and nuclei with two-dimensional electronic–vibrational spectroscopy
Published in
Proceedings of the National Academy of Sciences of the United States of America, June 2014
DOI 10.1073/pnas.1409207111
Pubmed ID
Authors

Thomas A. A. Oliver, Nicholas H. C. Lewis, Graham R. Fleming

Abstract

Multidimensional nonlinear spectroscopy, in the electronic and vibrational regimes, has reached maturity. To date, no experimental technique has combined the advantages of 2D electronic spectroscopy and 2D infrared spectroscopy, monitoring the evolution of the electronic and nuclear degrees of freedom simultaneously. The interplay and coupling between the electronic state and vibrational manifold is fundamental to understanding ensuing nonradiative pathways, especially those that involve conical intersections. We have developed a new experimental technique that is capable of correlating the electronic and vibrational degrees of freedom: 2D electronic-vibrational spectroscopy (2D-EV). We apply this new technique to the study of the 4-(di-cyanomethylene)-2-methyl-6-p-(dimethylamino)styryl-4H-pyran (DCM) laser dye in deuterated dimethyl sulfoxide and its excited state relaxation pathways. From 2D-EV spectra, we elucidate a ballistic mechanism on the excited state potential energy surface whereby molecules are almost instantaneously projected uphill in energy toward a transition state between locally excited and charge-transfer states, as evidenced by a rapid blue shift on the electronic axis of our 2D-EV spectra. The change in minimum energy structure in this excited state nonradiative crossing is evident as the central frequency of a specific vibrational mode changes on a many-picoseconds timescale. The underlying electronic dynamics, which occur on the hundreds of femtoseconds timescale, drive the far slower ensuing nuclear motions on the excited state potential surface, and serve as a excellent illustration for the unprecedented detail that 2D-EV will afford to photochemical reaction dynamics.

X Demographics

X Demographics

The data shown below were collected from the profile of 1 X user who shared this research output. Click here to find out more about how the information was compiled.
Mendeley readers

Mendeley readers

The data shown below were compiled from readership statistics for 186 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
United States 3 2%
Switzerland 2 1%
United Kingdom 2 1%
France 1 <1%
Canada 1 <1%
Germany 1 <1%
Unknown 176 95%

Demographic breakdown

Readers by professional status Count As %
Student > Ph. D. Student 62 33%
Researcher 39 21%
Student > Doctoral Student 18 10%
Professor > Associate Professor 8 4%
Student > Postgraduate 7 4%
Other 26 14%
Unknown 26 14%
Readers by discipline Count As %
Chemistry 106 57%
Physics and Astronomy 35 19%
Agricultural and Biological Sciences 4 2%
Medicine and Dentistry 2 1%
Computer Science 2 1%
Other 9 5%
Unknown 28 15%
Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 68. 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 24 June 2014.
All research outputs
#598,692
of 24,625,114 outputs
Outputs from Proceedings of the National Academy of Sciences of the United States of America
#10,389
of 101,438 outputs
Outputs of similar age
#5,543
of 233,862 outputs
Outputs of similar age from Proceedings of the National Academy of Sciences of the United States of America
#151
of 925 outputs
Altmetric has tracked 24,625,114 research outputs across all sources so far. Compared to these this one has done particularly well and is in the 97th percentile: it's in the top 5% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 101,438 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 38.8. This one has done well, scoring higher than 89% 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 233,862 tracked outputs that were published within six weeks on either side of this one in any source. This one has done particularly well, scoring higher than 97% of its contemporaries.
We're also able to compare this research output to 925 others from the same source and published within six weeks on either side of this one. This one has done well, scoring higher than 83% of its contemporaries.