Fluorescence characteristics of carbon nanoemitters derived from sucrose by green hydrothermal and microwave methods

• Two green routes i.e. microwave and hydrothermal methods employed to prepare fluorescent carbon nanoparticles
• Water-dispersible fluorescent carbon nanoparticles obtained
• Their luminous characteristics are investigated.

In this work, fluorescent carbon nanoparticles (CNPs) were prepared through two green methods i.e. microwave and hydrothermal, using sucrose as carbon precursor. Both of these methods have offered fluorescent CNPs as characterized by TEM, FTIR, zeta potential, absorbance and emission techniques. Excitation dependent emission spectra were exhibited by aqueous dispersion of these CNPs when they were subjected to different excitation wavelengths. The luminous characteristics of CNPs obtained from both of these methods were studied and compared. Their fluorescence stability in water and buffer was monitored for about three months. Influence of pH and various metal ions on emission spectra were investigated.

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