Mechanisms of photoluminescence in the molecular state of carbon dots prepared from o-phenylenediamine
Affiliation:
1. Asymmetric Synthesis and Chiral Technology Key Laboratory of Sichuan Province, Research and Application of Small Organic Chiral Molecules Key Laboratory of Yibin City, Department of Chemistry, Xihua University, Chengdu 610039, China;2. State Key Laboratory of Analytical Chemistry for Life Science, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China;1. Key Laboratory of Light Conversion Materials and Technology of Shandong Academy of Sciences, Advanced Materials Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China;2. College of Chemistry and Materials Science, Northwest University, Xi''an 710069, China;3. College of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China;4. Institute of Materia Medica, Chinese Academy of Medical Sciences, Beijing 100050, China;5. Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Department of Chemistry, Fudan University, Shanghai 200438, China;6. Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China;7. School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China;8. Key Laboratory for Advanced Materials, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, Institute of Fine Chemicals, East China University of Science and Technology, Shanghai 200237, China;9. College of Chemistry, Sichuan University, Chengdu 610065, China;10. Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China;1. School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China;2. Department of Chemistry, Maynooth University, National University of Ireland, Maynooth, Co. Kildare, Ireland;3. State Key Laboratory of Analytical Chemistry for Life Science, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China;1. Key Laboratory of Mesoscopic Chemistry of MOE, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China;2. Institut de Chimie de Strasbourg, UMR 7177, CNRS, Université de Strasbourg, Strasbourg Cedex 67008, France;1. Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China;2. Maanshan High-Tech Research Institute of Nanjing University, Maanshan 238200, China;3. The Cancer Hospital of the University of Chinese Academy of Sciences (Zhejiang Cancer Hospital), Institute of Basic Medicine and Cancer (IBMC), Chinese Academy of Sciences, Hangzhou 310022, China;1. School of Chemistry & Chemical Engineering, Southeast University, Nanjing 211189, China;2. School of Environment and Chemical Engineering, Anhui Vocational and Technical College, Hefei 230011, China
Abstract:
Sun's group from Beijing University of Technology, China, prepared red-emission CDs in high yield by a solvent-free method based on o-phenylenediamine and analyzed the origin of the red emission and the formation of CDs. 5,14-Dihydroquinoxalino[2,3-b]phenazine (DHQP) was successfully isolated from the system and identified as the fluorophore of the CDs. These findings provide insight into the PL mechanism of this type of CDs and may guide the further development of CDs that can be tuned to obtain tailored properties.
