TY - JOUR
T1 - Surface enhanced Raman spectroscopy of aromatic compounds on silver nanoclusters
AU - Fleger, Y.
AU - Mastai, Y.
AU - Rosenbluh, M.
AU - Dressler, D. H.
PY - 2009/3/1
Y1 - 2009/3/1
N2 - Surface enhanced Raman spectroscopy (SERS) has been used to characterize multilayers of three different aromatic compounds in the proximity of silver nanoclusters. SERS of mercapto benzoic acid (MBA), which adsorbs onto the silver nanoclusters through the sulfur moiety, exhibits frequency shifts in comparison to the Raman spectrum of crystalline MBA. Conversely, benzoic acid and benzophenone that adsorb through the oxygen species lack these frequency shifts, and show only a typical SERS enhancement. We employed X-ray photoelectron spectroscopy (XPS), to probe the nature of the binding between the silver and the three different aromatic compounds. Thereafter, we assigned the major Raman peaks of all three molecules to specific molecular vibrations. Overall, this enables us to determine the origin of the observed shifts in the SERS spectrum of MBA and similar molecules.
AB - Surface enhanced Raman spectroscopy (SERS) has been used to characterize multilayers of three different aromatic compounds in the proximity of silver nanoclusters. SERS of mercapto benzoic acid (MBA), which adsorbs onto the silver nanoclusters through the sulfur moiety, exhibits frequency shifts in comparison to the Raman spectrum of crystalline MBA. Conversely, benzoic acid and benzophenone that adsorb through the oxygen species lack these frequency shifts, and show only a typical SERS enhancement. We employed X-ray photoelectron spectroscopy (XPS), to probe the nature of the binding between the silver and the three different aromatic compounds. Thereafter, we assigned the major Raman peaks of all three molecules to specific molecular vibrations. Overall, this enables us to determine the origin of the observed shifts in the SERS spectrum of MBA and similar molecules.
KW - Aromatics
KW - Raman scattering spectroscopy
KW - Self assembly
KW - Surface enhanced Raman scattering
KW - Thiols
KW - X-ray photoelectron spectroscopy
UR - http://www.scopus.com/inward/record.url?scp=60849127590&partnerID=8YFLogxK
UR - http://scholar.google.com/scholar?num=3&hl=en&lr=&q=allintitle%3A%20Surface%20enhanced%20Raman%20spectroscopy%20of%20aromatic%20compounds%20on%20silver%20nanoclusters%2C%20author%3AYafit%20OR%20author%3AFleger%20OR%20author%3AMastai%20OR%20author%3ARosenbluh%20OR%20author%3ADressler%20OR%20author%3ADH.&as_ylo=2009&as_yhi=&btnG=Search&as_vis=0
U2 - 10.1016/j.susc.2009.01.020
DO - 10.1016/j.susc.2009.01.020
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SN - 0039-6028
VL - 603
SP - 788
EP - 793
JO - Surface Science
JF - Surface Science
IS - 5
ER -