Carbon Dots based Tissue Equivalent Dosimeter as an Ionizing Radiation Sensor

Abstract

This work explores the potential of carbon dots as a fluorescent probe in the determination of heavy ions and as an electrochemical biosensor. It also discusses how carbon dots can be introduced into the Fricke solution to potentially serve as an ionizing radiation sensor. The study presents a novel tissue equivalent dosimeter carbon dots‐based as an ionizing radiation sensor. The methodology for the synthesis of Nitrogen‐doped Carbon Dots N‐CDs and the characterization of the material are described. The results show that the N‐CDs have a high sensitivity to ionizing radiation and can be used as a dosimeter for radiation detection. The study also discusses the limitations and challenges of using carbon dots as a dosimeter for ionizing radiation. Overall, this study provides valuable insights into the potential applications of carbon dots in different fields and highlights the importance of further research in this area.

Nitrogen-Doped Carbon Dots as Ionizing Radiation Sensors in X-ray Dosimetry

“…As shown in Table , Fricke gel dosimeters irradiated with various X-ray and gamma ray energies and evaluated by ultraviolet and visible electronic absorption clearly demonstrate that the Fricke-N-CDs dosimeters evaluated by photoluminescence spectroscopy outperformed previously reported sensitivity values. Additionally, the sensitivity of this dosimeter is comparable to the results obtained in the study of carbon dots doped with nitrogen applied as a γ radiation sensor, also evaluated by photoluminescence …”

“…Fricke solution was prepared with 1.5 mmol L-1 of Fe 2+ and 8.0 mmol L-1 of sulfuric acid, based on a previous study . Initially, concentrations of 5.0 mg mL-1 and 10.0 mg mL-1 of N-CDs were investigated and irradiated in the range of 0.0 to 5.0 Gy.…”

“…Recently, a study on N-CDs used as γ radiation sensors was published by our research group. In this study, we reported the decrease in PL with the increase in the γ radiation dose when preparing a suspension of N-CDs with Fe 2+ ions …”

“…The application of different types of nanomaterials regarding ionizing radiation results in various optical and behavioral responses. The mechanism involved between PL and the absorbed dose in a CD sensor with a Fricke solution is directly related to the oxidation of Fe 2+ ions by radical species and the interaction of Fe 3+ ions that are formed postirradiation . The variation in QDs photoluminescence in response to ionizing radiation is generally attributed to the formation of defects, surface oxidation, and aggregation of these nanoparticles. , …”