25 October 2006 The photodynamics of Ag thin metal film surface enhanced Raman spectroscopy substrates
Author Affiliations +
Surface enhanced Raman spectroscopy (SERS) has been widely demonstrated to be capable of single molecule detection. In addition to enhancement of Raman scattering, the substrates used for SERS also display other unique optical properties such as photoluminescence and blinking. In this work, the photoactivation of Ag thin metal films as it relates to the mechanism of SERS enhancement and the production of Ag cluster SERS active sites was explored. Specifically, the photodynamics of SERS-active thin Ag films were qualitatively studied using a combination of optical imaging and high and low resolution spectroscopy. A key hypothesis tested in this work addressed the role of oxygen in thin metal film photodynamics. Based on spectroscopic and kinetic differences observed from thin Ag films under both ambient and nitrogen atmospheres, a simple photochemical mechanism for blinking in optical phenomena was developed and tested. The proposed mechanism relies on the photoreduction of silver oxide to produce an active species, which was postulated to be silver clusters.
© (2006) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Michele L. Jacobson, Michele L. Jacobson, Jordan D. Corbman, Jordan D. Corbman, Kathy L. Rowlen, Kathy L. Rowlen, } "The photodynamics of Ag thin metal film surface enhanced Raman spectroscopy substrates", Proc. SPIE 6378, Chemical and Biological Sensors for Industrial and Environmental Monitoring II, 63780B (25 October 2006); doi: 10.1117/12.685136; https://doi.org/10.1117/12.685136


Tip-enhanced Raman scattering of a DNA binding compound
Proceedings of SPIE (February 26 2006)
SERS used to study the effect of Langmuir Blodgett spacer...
Proceedings of SPIE (November 30 1991)
Harnessing surface plasmons
Proceedings of SPIE (October 13 2004)
The effect of aqueous solution in Raman spectroscopy
Proceedings of SPIE (October 28 2009)

Back to Top