比例變化的碳點通過水熱過程產生具NH2。透射電子顯微鏡圖像和X 射線衍射分
析給出了碳點具有量子點尺寸和無定形結構的信息。
紅外吸收光譜和X 射線光電子能譜分析證實，碳點具有石墨和脂肪族碳以及羧基
和胺基團的官能團。紫外-可見光譜和熒光光譜表明，碳點在340nm 處有一個激發
帶，再440nm 處有一個發射帶。由於參雜NH2 的碳點具有優異的強度和量子產率，
量子產量隨著NH2 含量的增加而增加。另外，單線態氧產生從碳點被檢驗出來。

Carbon dots with variation of NH2 ratio doped was produced by hydrothermal
procedure. Transmission electron microscopic images and X-ray diffraction analyses
gave the information that carbon dots had a quantum dot size and the amorphous
structure. Infrared absorption spectra and X-ray photoelectron spectroscopic analyses
confirmed that carbon dots had functional groups of graphitic and aliphatic carbon and
carboxyl and amine groups. Ultraviolet-visible and fluorescence spectra showed that
carbon dots had an excitation band at 340 nm and an emission band at 440 nm. Carbon
dots had excellent intensities and quantum yields due to doped NH2. Quantum yields
increased with increasing NH2 content. Additionally, singlet oxygen generation from
carbon dots was examined.

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