SYNTHESIS AND STUDY OF THE OPTICAL PROPERTIES OF LUMINESCENT CARBON (C) DOTS
Rubrics: 1. CHEMISTRY
Authors:
1.
Kazan National Research Technological University
(physical and colloid chemistry department)
graduate student from 01.01.2022 until now
Russian Federation
graduate student from 01.01.2022 until now
Russian Federation
2.
Kazan National Research Technological University
3.
KNITU
4.
Kazan National Research Technological University
Russian Federation
Russian Federation
Type:
Article
Pages:
from 18
to 22
Status:
In work
Language:
Russian
Keywords:
CARBON DOTS, LUMINESCENCE, C-DOTS, HYDROTHERMAL SYNTHESIS, O-PHENYLENEDIAMINE
Abstract (English):
Carbon dots (C-dots) are carbon nanostructures that have unique optical characteristics. They have potential for application in a wide range of areas of modern technology: electronics, optics, biomedicine, catalysis and etc. C-dots have a huge number of benefits: simplicity and low cost of synthesis, biocompatibility and low toxicity, high quantum yield, resistance to photodegradation. Nowadays the synthesis and study of carbon dots is a relevant area of modern science, which can be used for creation of new functional materials with a wide range of characteristics. Optically transparent polymer films, hybrid materials with nanoparticles, d-, f-metal compounds have already been obtained on CD basis. In this work we have studied the possibility of obtaining carbon dots and investigating their optical properties. Luminescent carbon dots were synthesized under hydrothermal conditions. Fluorescence microscopy showed that the obtained particles have a uniform distribution in aqueous solutions, which makes them useful for preparation of luminescent materials. The luminescence spectra of the synthesized carbon dots revealed that the maximum of their emission intensity showed at 443 nm, which corresponds to the blue region of the spectrum. Concentration dependence of the maximum luminescence intensity analysis revealed the maximum effective particle content in aqueous solutions. It was established that the quantum yield of the obtained C-dots is equal to 25%. The results obtained in this work will serve as a basis for further studies on the development of approaches to the synthesis and study of carbon nanoparticles and materials based on them.
Carbon dots (C-dots) are carbon nanostructures that have unique optical characteristics. They have potential for application in a wide range of areas of modern technology: electronics, optics, biomedicine, catalysis and etc. C-dots have a huge number of benefits: simplicity and low cost of synthesis, biocompatibility and low toxicity, high quantum yield, resistance to photodegradation. Nowadays the synthesis and study of carbon dots is a relevant area of modern science, which can be used for creation of new functional materials with a wide range of characteristics. Optically transparent polymer films, hybrid materials with nanoparticles, d-, f-metal compounds have already been obtained on CD basis. In this work we have studied the possibility of obtaining carbon dots and investigating their optical properties. Luminescent carbon dots were synthesized under hydrothermal conditions. Fluorescence microscopy showed that the obtained particles have a uniform distribution in aqueous solutions, which makes them useful for preparation of luminescent materials. The luminescence spectra of the synthesized carbon dots revealed that the maximum of their emission intensity showed at 443 nm, which corresponds to the blue region of the spectrum. Concentration dependence of the maximum luminescence intensity analysis revealed the maximum effective particle content in aqueous solutions. It was established that the quantum yield of the obtained C-dots is equal to 25%. The results obtained in this work will serve as a basis for further studies on the development of approaches to the synthesis and study of carbon nanoparticles and materials based on them.
Keywords:
CARBON DOTS, LUMINESCENCE, C-DOTS, HYDROTHERMAL SYNTHESIS, O-PHENYLENEDIAMINE
CARBON DOTS, LUMINESCENCE, C-DOTS, HYDROTHERMAL SYNTHESIS, O-PHENYLENEDIAMINE
