Surface-enhanced Raman spectroscopy of one and a few molecules of acid 4-mercaptobenzoic in AgNP enabled by hot spots generated by hydrogen bonding
Flávia C. Marques, Raisa Siqueira Alves, Diego P. dos Santos, Gustavo F. S. Andrade
Abstract
. The average SERS of the 4-MBA in low surface coverage shows a mixture of structures, such as protonated and deprotonated 4-MBA, as well as a small amount of benzenethiol coming from decarboxylation of part of 4-MBA molecules. The few molecules SERS detection of 4-MBA was demonstrated experimentally and the experimental results were associated with a greater number of hot spots formed, being befitting with the generalized Mie theory simulations.
Topics & Concepts
Raman spectroscopyMoleculeSurface-enhanced Raman spectroscopyHydrogen bondChemistrySpectroscopySpotsAnalytical Chemistry (journal)PhotochemistryNanotechnologyMaterials sciencePhysical chemistryOrganic chemistryRaman scatteringOpticsPhysicsQuantum mechanicsGold and Silver Nanoparticles Synthesis and ApplicationsNanocluster Synthesis and ApplicationsQuantum Dots Synthesis And Properties