Novel ionic liquid-functionalized carbon quantum dots (IL-CDs) were prepared by hydrothermal method, and characterized with FT-IR, TEM and XPS. The IL-CDs exhibited narrower particle size distribution with more uniform dispersion and the surface potential changes from negative to positive due to the function of IL. IL-CDs could be quenched (“turned off”) after adding ascorbic acid (AA), and as an “on–off”, fluorescent probe could be established for direct analysis AA. The linear range of AA was 0.34–30.00 μg/mL and the LOD was 0.11 μg/mL. The method was successfully applied to the determination of AA in real samples with satisfactory results.
机构:
Hong Kong Baptist Univ, Dept Phys, Kowloon Tong, Hong Kong, Peoples R China
Hong Kong Baptist Univ, Ctr Adv Luminescence Mat, Kowloon Tong, Hong Kong, Peoples R ChinaNatl Univ Singapore, Dept Chem, Singapore 117543, Singapore
机构:
Jining Med Univ, Bionanotechnol & Med Engn Inst, Jining 272067, Peoples R ChinaJining Med Univ, Bionanotechnol & Med Engn Inst, Jining 272067, Peoples R China
Yang, Jie
Yang, Tao
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机构:
Qingdao Univ Sci & Technol, Coll Chem & Mol Engn, Qingdao 266042, Peoples R ChinaJining Med Univ, Bionanotechnol & Med Engn Inst, Jining 272067, Peoples R China
Yang, Tao
Hou, Shi Feng
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机构:
Montclair State Univ, Dept Chem & Biochem, Montclair, NJ 07043 USAJining Med Univ, Bionanotechnol & Med Engn Inst, Jining 272067, Peoples R China
机构:
Engineering Research Center for Nanophotonics and Advanced Instrument,Ministry of Education,and Department of Physics,East China Normal University Engineering Research Center for Nanophotonics and Advanced Instrument,Ministry of Education,and Department of Physics,East China Normal University
Feng Zhu
Xiaohong Chen
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机构:
Engineering Research Center for Nanophotonics and Advanced Instrument,Ministry of Education,and Department of Physics,East China Normal University Engineering Research Center for Nanophotonics and Advanced Instrument,Ministry of Education,and Department of Physics,East China Normal University
Xiaohong Chen
Zhe Lu
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Engineering Research Center for Nanophotonics and Advanced Instrument,Ministry of Education,and Department of Physics,East China Normal University Engineering Research Center for Nanophotonics and Advanced Instrument,Ministry of Education,and Department of Physics,East China Normal University
Zhe Lu
Jiaxiang Yang
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机构:
Department of Chemistry,Anhui Engineering Research Center for Nanophotonics and Advanced Instrument,Ministry of Education,and Department of Physics,East China Normal University
Jiaxiang Yang
Sumei Huang
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机构:
Engineering Research Center for Nanophotonics and Advanced Instrument,Ministry of Education,and Department of Physics,East China Normal University Engineering Research Center for Nanophotonics and Advanced Instrument,Ministry of Education,and Department of Physics,East China Normal University
Sumei Huang
Zhuo Sun
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机构:
Engineering Research Center for Nanophotonics and Advanced Instrument,Ministry of Education,and Department of Physics,East China Normal University Engineering Research Center for Nanophotonics and Advanced Instrument,Ministry of Education,and Department of Physics,East China Normal University
机构:
E China Normal Univ, Minist Educ, Engn Res Ctr Nanophoton & Adv Instrument, Shanghai 200062, Peoples R China
E China Normal Univ, Dept Phys, Shanghai 200062, Peoples R ChinaE China Normal Univ, Minist Educ, Engn Res Ctr Nanophoton & Adv Instrument, Shanghai 200062, Peoples R China
Zhu, Feng
Chen, Xiaohong
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机构:
E China Normal Univ, Minist Educ, Engn Res Ctr Nanophoton & Adv Instrument, Shanghai 200062, Peoples R China
E China Normal Univ, Dept Phys, Shanghai 200062, Peoples R ChinaE China Normal Univ, Minist Educ, Engn Res Ctr Nanophoton & Adv Instrument, Shanghai 200062, Peoples R China
Chen, Xiaohong
Lu, Zhe
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E China Normal Univ, Minist Educ, Engn Res Ctr Nanophoton & Adv Instrument, Shanghai 200062, Peoples R China
E China Normal Univ, Dept Phys, Shanghai 200062, Peoples R ChinaE China Normal Univ, Minist Educ, Engn Res Ctr Nanophoton & Adv Instrument, Shanghai 200062, Peoples R China
Lu, Zhe
Yang, Jiaxiang
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机构:
Anhui Univ, Dept Chem, Hefei 230039, Anhui, Peoples R ChinaE China Normal Univ, Minist Educ, Engn Res Ctr Nanophoton & Adv Instrument, Shanghai 200062, Peoples R China
Yang, Jiaxiang
Huang, Sumei
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机构:
E China Normal Univ, Minist Educ, Engn Res Ctr Nanophoton & Adv Instrument, Shanghai 200062, Peoples R China
E China Normal Univ, Dept Phys, Shanghai 200062, Peoples R ChinaE China Normal Univ, Minist Educ, Engn Res Ctr Nanophoton & Adv Instrument, Shanghai 200062, Peoples R China
Huang, Sumei
Sun, Zhuo
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机构:
E China Normal Univ, Minist Educ, Engn Res Ctr Nanophoton & Adv Instrument, Shanghai 200062, Peoples R China
E China Normal Univ, Dept Phys, Shanghai 200062, Peoples R ChinaE China Normal Univ, Minist Educ, Engn Res Ctr Nanophoton & Adv Instrument, Shanghai 200062, Peoples R China