TY - JOUR
T1 - SERS not to be taken for granted in the presence of oxygen
AU - Erol, Melek
AU - Han, Yun
AU - Stanley, Scott K.
AU - Stafford, Christopher M.
AU - Du, Henry
AU - Sukhishvili, Svetlana
PY - 2009/6/10
Y1 - 2009/6/10
N2 - (Figure Presented) Oxidation of the Ag nanoparticle surface has a dramatic effect on the adsorption, orientation, and SERS detection limit of nitroaromatic molecules in aqueous solutions. Ultrasensitive SERS detection of p-nitrophenol can be achieved when oxidation of surface-immobilized Ag nanoparticles is inhibited by replacing the oxygen dissolved in water with argon gas. The presence of silver oxide at the nanoparticle surface hinders charge transfer between the aromatic ring and the underlying Ag metal surface and drastically decreases the overall detection sensitivity.
AB - (Figure Presented) Oxidation of the Ag nanoparticle surface has a dramatic effect on the adsorption, orientation, and SERS detection limit of nitroaromatic molecules in aqueous solutions. Ultrasensitive SERS detection of p-nitrophenol can be achieved when oxidation of surface-immobilized Ag nanoparticles is inhibited by replacing the oxygen dissolved in water with argon gas. The presence of silver oxide at the nanoparticle surface hinders charge transfer between the aromatic ring and the underlying Ag metal surface and drastically decreases the overall detection sensitivity.
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U2 - 10.1021/ja807458x
DO - 10.1021/ja807458x
M3 - Article
C2 - 19445502
AN - SCOPUS:67650547239
SN - 0002-7863
VL - 131
SP - 7480
EP - 7481
JO - Journal of the American Chemical Society
JF - Journal of the American Chemical Society
IS - 22
ER -