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Attention Score in Context
| Title |
Efficient Vibrational Energy Transfer through Covalent Bond in Indigo Carmine Revealed by Nonlinear IR Spectroscopy
|
|---|---|
| Published in |
Journal of Physical Chemistry B, September 2017
|
| DOI | 10.1021/acs.jpcb.7b06766 |
| Pubmed ID | |
| Authors |
Xuemei He, Pengyun Yu, Juan Zhao, Jianping Wang |
| Abstract |
Ultrafast vibrational relaxation and structural dynamics of indigo carmine in dimethylsulfoxide were examined using femtosecond pump-probe infrared and two-dimensional infrared (2D IR) spectroscopies. Using the intramolecularly hydrogen-bonded C=O and delocalized C=C stretching modes as infrared probes, local structural and dynamical variations of this blue dye molecule were observed. Energy relaxation of vibrationally excited C=O stretching mode was found to occur through covalent bond to the delocalized aromatic vibrational modes on the time scale of a few picoseconds or less. Vibrational quantum beating was observed in magic-angle pump-probe, anisotropy, and 2D IR cross-peak dynamics, showing an oscillation period of ca. 1010 femtoseconds, which corresponds to the energy difference between the C=O and C=C transition frequency (33 cm(-1)). This confirms a resonant vibrational energy transfer happened between the two vibrators. However, more efficient energy-accepting mode of the excited C=O stretching was believed to be a nearby combination and/or overtone mode that is more tightly connected to the C=O species. On the structural aspect, dynamical-time dependent 2D IR spectra reveal insignificant inhomogeneous contribution to time-correlation relaxation for both the C=O and C=C stretching modes, which is in agreement with the generally believed structural rigidity of such conjugated molecules. |
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.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Unknown | 1 | 100% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 1 | 100% |
Mendeley readers
The data shown below were compiled from readership statistics for 27 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Unknown | 27 | 100% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Ph. D. Student | 5 | 19% |
| Student > Doctoral Student | 3 | 11% |
| Student > Bachelor | 2 | 7% |
| Student > Master | 2 | 7% |
| Researcher | 2 | 7% |
| Other | 3 | 11% |
| Unknown | 10 | 37% |
| Readers by discipline | Count | As % |
|---|---|---|
| Chemistry | 12 | 44% |
| Physics and Astronomy | 1 | 4% |
| Pharmacology, Toxicology and Pharmaceutical Science | 1 | 4% |
| Materials Science | 1 | 4% |
| Engineering | 1 | 4% |
| Other | 0 | 0% |
| Unknown | 11 | 41% |
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 01 October 2017.
All research outputs
#22,764,772
of 25,382,440 outputs
Outputs from Journal of Physical Chemistry B
#11,809
of 14,912 outputs
Outputs of similar age
#289,102
of 328,838 outputs
Outputs of similar age from Journal of Physical Chemistry B
#170
of 290 outputs
Altmetric has tracked 25,382,440 research outputs across all sources so far. This one is in the 1st percentile – i.e., 1% of other outputs scored the same or lower than it.
So far Altmetric has tracked 14,912 research outputs from this source. They receive a mean Attention Score of 2.9. This one is in the 1st percentile – i.e., 1% of its peers scored the same or lower than it.
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We're also able to compare this research output to 290 others from the same source and published within six weeks on either side of this one. This one is in the 1st percentile – i.e., 1% of its contemporaries scored the same or lower than it.