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Ultrafast ammonia-driven, microwave-assisted synthesis of nitrogen-doped graphene quantum dots and their optical properties
Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review
DOI
- https://doi.org/10.1515/nanoph-2016-0102
Final published version
- Binjie Zheng, Univ Elect Sci & Technol China, University of Electronic Science & Technology of China, State Key Lab Elect Thin Films & Integrated Devic ,
- Yuanfu Chen, Univ Elect Sci & Technol China, University of Electronic Science & Technology of China, State Key Lab Elect Thin Films & Integrated Devic ,
- Pingjian Li, Univ Elect Sci & Technol China, University of Electronic Science & Technology of China, State Key Lab Elect Thin Films & Integrated Devic ,
- Zegao Wang ,
- Bingqiang Cao, University of Jinan ,
- Fei Qi, Univ Elect Sci & Technol China, University of Electronic Science & Technology of China, State Key Lab Elect Thin Films & Integrated Devic ,
- Jinbo Liu, Univ Elect Sci & Technol China, University of Electronic Science & Technology of China, State Key Lab Elect Thin Films & Integrated Devic ,
- Zhiwen Qiu, University of Jinan ,
- Wanli Zhang, Univ Elect Sci & Technol China, University of Electronic Science & Technology of China, State Key Lab Elect Thin Films & Integrated Devic
For the first time, a facile, ultrafast, ammoniadriven microwave-assisted synthesis of high-quality nitrogen-doped graphene quantum dots (NGQDs) at room temperature and atmospheric pressure is presented. This one-step method is very cheap, environment friendly, and suitable for large-scale production. The as-synthesized NGQDs consisting of one to three graphene monolayers exhibit highly crystalline quality with an average size of 5.3 nm. A new fluorescence (FL) emission peak at 390 nm is observed, which might be attributed to the doped nitrogen atoms into the GQDs. An interesting red-shift is observed by comparing the FL excitation spectra to the UV-visible absorption spectra. Based on the optical properties, the detailed Jablonski diagram representing the energy level structure of NGQDs is derived.
| Original language | English |
|---|---|
| Journal | Nanophotonics |
| Volume | 6 |
| Issue | 1 |
| Pages (from-to) | 259-267 |
| Number of pages | 9 |
| ISSN | 2192-8606 |
| DOIs | |
| Publication status | Published - Jan 2017 |
- nitrogen-doped, graphene quantum dots, ultrafast synthesis, fluorescence nanophotonics, ONE-POT SYNTHESIS, DEEP-ULTRAVIOLET, AQUEOUS-MEDIA, CARBON, IONS, PHOTOLUMINESCENCE, FLUORESCENCE, OXIDE
Research areas
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