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Modification of Ag nanoparticles with mixed thiols for improved SERS detection of poorly adsorbing target molecules:
Alan Stewart1, Steven E J Bell
1Queen's University Belfast, Belfast BT9 5AG, UK.
Chemical Communications (Cambridge, England)
|March 10, 2011
Abstract:
Here we report an example of a mixed thiol monolayer on the surface of Ag nanoparticles which promotes adsorption and quantitative SERS detection of 3,4-methylenedioxymethamphetamine (MDMA, "Ecstasy"); the thiols in the mixed monolayers act synergistically since MDMA does not adsorb onto colloids modified with either of the thiols separately.
