Time and frequency dependent intensity variations in sequences of Raman spectra recorded at plasmonic junctions can be assigned to molecular reorientation. This is revealed through Raman trajectories recorded at a nanojunction formed between a silver AFM tip and a corrugated silver surface coated with biphenyl-4,4’-dithiol. Molecular motion is not observed when the tip is retracted and only surface enhancement is operative. In effect, junction plasmon induced molecular reorientation is tracked.
Revised: February 6, 2014 |
Published: October 17, 2013
Citation
El-Khoury P.Z., D. Hu, and W.P. Hess. 2013.Junction Plasmon-Induced Molecular Reorientation.The Journal of Physical Chemistry Letters 4, no. 20:3435-3439.PNNL-SA-97929.doi:10.1021/jz401838b