Chemical Interface Damping of <scp>Silver‐coated</scp> Gold Nanorods Using Supramolecular <scp>Host–Guest</scp> Chemistry
Kyeong Rim Ryu, Ji Won Ha
Abstract
We present the chemical interface damping (CID) of single Ag‐coated Au nanorods (AuNRs@Ag) using cucurbit[7]uril (CB[7])‐based host–guest chemistry. The chemisorption of CB[7]‐NH 2 onto an AuNR@Ag surface resulted in a redshift of its localized surface plasmon resonance (LSPR) scattering peak, with a considerably increased linewidth. This LSPR broadening was ascribed to CID caused by the formation of a strong nitrogen–Ag interaction during the chemisorption of CB[7]‐NH 2 onto the AuNR@Ag surface. Furthermore, we observed additional broadening of the LSPR linewidth when the guest molecule (oxaliplatin) was encapsulated into CB[7]‐NH 2 chemisorbed onto the AuNR@Ag surface.
Topics & Concepts
ChemisorptionSurface plasmon resonanceNanorodChemistryLaser linewidthMoleculeNanotechnologyChemical engineeringNanoparticleAdsorptionMaterials sciencePhysical chemistryOrganic chemistryLaserOpticsPhysicsEngineeringSupramolecular Chemistry and ComplexesBlock Copolymer Self-AssemblyDendrimers and Hyperbranched Polymers