Size-controlled synthesis of cyclodextrin-capped gold nanoparticles for molecular recognition using surface-enhanced Raman scattering
Koichiro Saito, Keegan McGehee, Yasuo Norikane
Abstract
and NaOH were not used. The size-controlled synthesis of β-CD-capped AuNPs was achieved by changing the amount of seed solution. We fabricated monolayers of β-CD-capped AuNPs by liquid-liquid interfacial self-assembly for application in surface-enhanced Raman scattering (SERS). The SERS intensity is significantly improved by using larger β-CD-capped AuNPs. In addition, we found that β-CDs can detect pyrene with higher sensitivity than α-CDs on the basis of the difference in molecular recognition ability between α-CDs and β-CDs.
Topics & Concepts
Colloidal goldRaman scatteringSurface plasmon resonanceMonolayerMaterials scienceCyclodextrinNanoparticleRaman spectroscopyReagentNanotechnologyReducing agentMolecular recognitionPyreneChemical engineeringMoleculeChemistryOrganic chemistryEngineeringPhysicsOpticsGold and Silver Nanoparticles Synthesis and ApplicationsNanocluster Synthesis and ApplicationsBiosensors and Analytical Detection