Investigation of the properties of carbon quantum dots synthesized by the hydrothermal method

Abstract Carbon quantum dots have a number of advantages and can be widely used as a material for photodetectors, chemical element detectors, biosensors, and for various optoelectronic applications. The optimal conditions for the hydrothermal synthesis of carbon quantum dots from glucose are considered. Carbon quantum dots, having an amorphous-crystalline structure with functional surface groups, were obtained. Luminescence spectra of these dots showed the presence of bright luminescence in the green region. The dependences of the luminescence spectra as a function of the excitation length were measured. Experiments on the functionalization of the carbon quantum dots with chromophores were carried out in order to study their effect on the luminescence intensity.