Surface modifications of carbon nanodots reveal the chemical source of their bright fluorescence.

ABSTRACT: Fluorescent carbon nanodots (CNDs) have drawn increasing attention in recent years. These cost-effective and eco-friendly nanomaterials with bright fluorescence have been investigated as promising materials for electrooptic and bioimaging applications. However, the chemical source stimulating their strong fluorescence has not been completely identified to date. Depending on the chemical composition, two absorption peaks are observed in the visible range. In this study, we applied selected chemical modifications to CNDs in order to elucidate the correlation between the chemical structure and optical behavior of CNDs. Varying the amount of acetic acid in the synthesis process resulted in different effects on the absorbance and fluorescence photo-spectra. Specifically, at a low concentration

SUBMITTER: Dutta A 

PROVIDER: S-EPMC9417464 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature