Chiroptical Effect in Charge Transfer Processes in Chiral Carbon Dot-Doped Biopolymers: Application Toward Developing Chiral Electrodes

The unique chiral properties exhibited by nanoscale materialsandtheir preferable interactions with the helicity of free-standing protein-basedbiopolymers offer a novel platform for developing spintronic applications.We investigated the chiroptical effect in charge transfer processesin a chiral carbon dot (C-Dot)-doped biopolymer, specifically a free-standingprotein-based film composed of bovine serum albumin (BSA). Here, wereveal a chiroptical effect in the charge transfer process, indicatingspin selectivity of the charge carriers by measuring the circulardichroism spectra and by conducting an electrical study of the chiralC-dot-doped BSA film. To our knowledge, this is the first study toinvestigate chiral-selected electron transfer through a free-standingchiral C-Dot-doped protein-based film. Our results provide new insightsinto the chiral properties of materials and suggest potential applicationsin the development of chiral-sensitized bioelectronic devices, includingthe fabrication of chiral electrodes. These advancements in biopolymer-basedchiral electronics could have important implications in biosensing,drug delivery, and other biomedical applications.

Automated summary

The chiral properties of nanoscale materials and their interactions with protein-based biopolymers offer new opportunities for spintronic applications. In this study, we investigated the chiroptical effect in a chiral carbon dot-doped biopolymer film. We observed a spin selectivity of charge carriers, indicating the potential for chiral-sensitized bioelectronic devices and chiral electrode fabrication. These advancements in biopolymer-based chiral electronics have important implications in biosensing, drug delivery, and biomedical applications.