碳量子点(CQDs)的合成
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Ref. Youfu Wang, Aiguo Hu. J. Mater. Chem. C, 2014, 2, 6921–6939
2.1 Arc discharge method
Arc discharge soot
oxidative introduce carboxyl functional groups
3. Future target
1. High Quantum yield 2. High yield 3. Fluorescence
Thank you !
材料合成化学 2015-1-5
2.3 Electrochemical Electrochemical carbonization
Three electrodes a degassed acetonitrile solution withTBAP Cycled applied potential CQDs solution Purification process
2.5 Microwave irradiation
color: transparent(l) brown(l) dark-brown(s)
( indicating the formation of C-dots )
add distilled water to form aqueous solution
3、Future target
1. Introduction
Carbon quantum dots (CQDs) are a new class of quantum dots materials
Inorganic quantum dots
Carbon quantum dots
Ref. 1 Youfu Wang, Aiguo Hu. J. Mater. Chem. C, 2014, 2, 6921–6939 2 Shi Ying Lim, Wei Shen and Zhiqiang Gao, Chem. Soc. Rew., 2015, 362-281
Experimental configuration
2.4 Laser ablation
graphite powder cement
carbon target
Laser
Carbon precursor
Acid treated
Ref. Sun Y P. et al. J Am Chem Soc. 2006, 128( 24) : 7756-7757.
carbon source
H2SO4
carbonaceous materials
HNO3
Ref. 1 L. Shen, L. Zhang, M. Chen, X. Chen and J. Wang, Carbon,2013,55, 343. 2 H. Peng and J. Travas-Sejdic, Chem. Mater., 2009, 21, 5563
gel electrophoresis method extraction
suspension
CQDs
Arc processing
Ref. Xu X Y，Ray R，Gu Y L，et al． J Am Chem Soc，2004，126 ( 40 ) : 12736-12737.
2.2 Chemical ablation
evaporating the acetonitrile from solution CQDs dissolving the remaining solid in water dialyzing the aqueous solution with a cellulose ester membrane bag Ref: [1] Zheng L, Chi Y, Dong Y, et al. J Am Chem Soc, 2009, 131(13): 4564-4565.. [2] Wang Y F, Hu A J. J. Mater. Chem. C, 2014, 2, 6921
2.7 Template
Choose a suitable template
synthesis CQDs Acid etching template
CQDs
Ref. Ruili Liu et.al Angew. Chem. Int. Ed. 2009(48):4598 –4601
TEM images of CQDs: uniformity particle
2.1 2.2 2.3 2.4 2.5 2.6 2.7 Arc discharge method Chemical ablation Electrochemical carbonization Laser ablation Microwave irradiation Hydrothermal/solvothermal Template
The Synthesis of Carbon Quantum Dots(CQDs)
speaker：叶江林
组员：汪冬冬 叶江林 王长来 章小同 杜娟 高峰 魏绍娟 郭亚丽 潘世友 刘克 潘祺
材料合成化学 2015-1-5
Content
1、Introduction
2、Synthetic approaches
saccharose
citric acid
Ref. S. Sahu, B. Behera, T. K. Maiti and S. Mohapatra, Chem.Commun., 2012, 48, 8835.
fluorescence quench
Ref. Zhu S, Meng Q, Wang L, et al. Angewandte Chemie, 2013, 125(14): 4045-4049.
Great potential applications
2. S来自百度文库nthetic methods
Many methods have been proposed to prepare CQDs during the last decade, which can be roughly classified into “Top-down” and “Bottom-up” approaches.
transferred to vacuum oven and heated purified in a centrifuge
Ref. Zhu H, Wang X, Li Y, et al. Chem. Commun., 2009 (34): 5118-5120.
2.6 Hydrothermal/Solveothermal
2.1 Arc discharge method
Arc discharge soot
oxidative introduce carboxyl functional groups
3. Future target
1. High Quantum yield 2. High yield 3. Fluorescence
Thank you !
材料合成化学 2015-1-5
2.3 Electrochemical Electrochemical carbonization
Three electrodes a degassed acetonitrile solution withTBAP Cycled applied potential CQDs solution Purification process
2.5 Microwave irradiation
color: transparent(l) brown(l) dark-brown(s)
( indicating the formation of C-dots )
add distilled water to form aqueous solution
3、Future target
1. Introduction
Carbon quantum dots (CQDs) are a new class of quantum dots materials
Inorganic quantum dots
Carbon quantum dots
Ref. 1 Youfu Wang, Aiguo Hu. J. Mater. Chem. C, 2014, 2, 6921–6939 2 Shi Ying Lim, Wei Shen and Zhiqiang Gao, Chem. Soc. Rew., 2015, 362-281
Experimental configuration
2.4 Laser ablation
graphite powder cement
carbon target
Laser
Carbon precursor
Acid treated
Ref. Sun Y P. et al. J Am Chem Soc. 2006, 128( 24) : 7756-7757.
carbon source
H2SO4
carbonaceous materials
HNO3
Ref. 1 L. Shen, L. Zhang, M. Chen, X. Chen and J. Wang, Carbon,2013,55, 343. 2 H. Peng and J. Travas-Sejdic, Chem. Mater., 2009, 21, 5563
gel electrophoresis method extraction
suspension
CQDs
Arc processing
Ref. Xu X Y，Ray R，Gu Y L，et al． J Am Chem Soc，2004，126 ( 40 ) : 12736-12737.
2.2 Chemical ablation
evaporating the acetonitrile from solution CQDs dissolving the remaining solid in water dialyzing the aqueous solution with a cellulose ester membrane bag Ref: [1] Zheng L, Chi Y, Dong Y, et al. J Am Chem Soc, 2009, 131(13): 4564-4565.. [2] Wang Y F, Hu A J. J. Mater. Chem. C, 2014, 2, 6921
2.7 Template
Choose a suitable template
synthesis CQDs Acid etching template
CQDs
Ref. Ruili Liu et.al Angew. Chem. Int. Ed. 2009(48):4598 –4601
TEM images of CQDs: uniformity particle
2.1 2.2 2.3 2.4 2.5 2.6 2.7 Arc discharge method Chemical ablation Electrochemical carbonization Laser ablation Microwave irradiation Hydrothermal/solvothermal Template
The Synthesis of Carbon Quantum Dots(CQDs)
speaker：叶江林
组员：汪冬冬 叶江林 王长来 章小同 杜娟 高峰 魏绍娟 郭亚丽 潘世友 刘克 潘祺
材料合成化学 2015-1-5
Content
1、Introduction
2、Synthetic approaches
saccharose
citric acid
Ref. S. Sahu, B. Behera, T. K. Maiti and S. Mohapatra, Chem.Commun., 2012, 48, 8835.
fluorescence quench
Ref. Zhu S, Meng Q, Wang L, et al. Angewandte Chemie, 2013, 125(14): 4045-4049.
Great potential applications
2. S来自百度文库nthetic methods
Many methods have been proposed to prepare CQDs during the last decade, which can be roughly classified into “Top-down” and “Bottom-up” approaches.
transferred to vacuum oven and heated purified in a centrifuge
Ref. Zhu H, Wang X, Li Y, et al. Chem. Commun., 2009 (34): 5118-5120.
2.6 Hydrothermal/Solveothermal