A SERS Study of Charge Transfer Process in Au Nanorod-MBA@Cu₂O Assemblies: Effect of Length to Diameter Ratio of Au Nanorods.

ABSTRACT: Surface-enhanced Raman scattering (SERS) is a powerful tool in charge transfer (CT) process research. By analyzing the relative intensity of the characteristic bands in the bridging molecules, one can obtain detailed information about the CT between two materials. Herein, we synthesized a series of Au nanorods (NRs) with different length-to-diameter ratios (L/Ds) and used these Au NRs to prepare a series of core-shell structures with the same Cu₂O thicknesses to form Au NR-4-mercaptobenzoic acid (MBA)@Cu₂O core-shell structures. Surface plasmon resonance (SPR) absorption bands were adjusted by tuning the L/Ds of Au NR cores in these assemblies. SERS spectra of the core-shell structure were obtained under 633 and 785 nm laser excitations, and on the basis of the differ

SUBMITTER: Guo L 

PROVIDER: S-EPMC8066000 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature