Simple Approach to Synthesize Amino-Functionalized Carbon Dots by Carbonization of Chitosan

Scientific Reports
Xin LiuXueming Zhang


Carbon dots (CDs) as a new series of fluorescent nanomaterials have drawn great attention in recent years owning to their unique properties. In this paper, a simple carbonization approach to synthesize amino-functionalized CDs was developed by using chitosan as the carbon precursor. The as-prepared CDs possessed desirable amino function group on their surface and exhibited bright luminescence with absolute quantum yield (QY) of 4.34%, excitation-, pH-dependent and up-conversion fluorescence behaviors. Furthermore, we have investigated the cytotoxicity and biocompatibility of the as-prepared CDs, which demonstrated that the as-prepared CDs have the potential applications in biosensing, cellular imaging and drug delivery.


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Methods Mentioned

atomic-force microscopy
transmission electron microscopy
fluorescence imaging

Software Mentioned

Quantum Yield Wizard )
Edinburgh FLS

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