Scholarlink

Abstract <p>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, such as electronics, optics, biomedicine, and catalysis. C-dots have a huge number of benefits: simplicity and low cost of synthesis, biocompatibility and low toxicity, high quantum yield, and 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, and <i>d</i>- and&#xa0; <i>f</i>-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. In the luminescence spectra, the emission maximum for the synthesized carbon dots is observed 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 synthesis and study of carbon nanoparticles and materials based on them.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Synthesis and Optical Properties of Blue Carbon Dots

  • 期刊论文

  • 发表日期：

    2025年8月1日

查看全文
  • A. E. Zavorotko,
  • A. S. Krupin,
  • Yu. G. Galyametdinov

摘要

Abstract

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, such as electronics, optics, biomedicine, and catalysis. C-dots have a huge number of benefits: simplicity and low cost of synthesis, biocompatibility and low toxicity, high quantum yield, and 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, and d- and  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. In the luminescence spectra, the emission maximum for the synthesized carbon dots is observed 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 synthesis and study of carbon nanoparticles and materials based on them.