Evidence of natural isotopic distribution from single-molecule SERS

Details Evidence of natural isotopic distribution from single-molecule SERS Evidence of natural isotopic distribution from single-molecule SERS

2008-11-03

arxiv.org/abs/0811.0374v1

Physics

Condensed Matter

Soft Condensed Matter

4 pages, 3 figures

Scientific paper

We report on the observation of the natural isotopic spread of carbon from single-molecule Surface Enhanced Raman Spectroscopy (SM-SERS). By choosing a dye molecule with a very localized Raman active vibration in a cyano bond (C$\equiv$N triple bond), we observe (in a SERS colloidal liquid) a small fraction of SM-SERS events where the frequency of the cyano mode is softened and in agreement with the effect of substituting $^{12}$C by the next most abundant $^{13}$C isotope. This example adds another demonstration of single molecule sensitivity in SERS through isotopic editing which is done, in this case, not by artificial isotopic editing but rather by nature itself. It also highlights SERS as a unique spectroscopic tool, capable of detecting an isotopic change in one atom of a single molecule.

Affiliated with

Also associated with

No associations

Rating

Evidence of natural isotopic distribution from single-molecule SERS does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Evidence of natural isotopic distribution from single-molecule SERS, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Evidence of natural isotopic distribution from single-molecule SERS will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-234481