Abstract
The adsorption behaviour in the SERS complex of diazepam (7-chloro-1-methyl-5-phenyl-3-dihydro-1,4-benzodiazepin-2-one) and nitrazepam (1,3-dihydro-7-nitro-5-phenyl-1,4-benzodiazepin-2-one) with the Ag colloidal particles is reported and discussed. In both cases, the CN bond vibration of the 1,4-benzodiazepine is strongly affected by adsorption and enhanced. The SERS system of Ag colloid with diazepam or nitrazepam allow the recognition of the drug sample at concentration of 10−7moll−1.
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