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]‐NH2 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]‐NH2 onto the AuNR@Ag surface. Furthermore, we observed additional broadening of the LSPR linewidth when the guest molecule (oxaliplatin) was encapsulated into CB[7]‐NH2 chemisorbed onto the AuNR@Ag surface.
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