| ZnS掺Mn磷光量子点对金属离子传感机理的探讨 |
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| 引用本文： | 段玉娇,李文婷,申前进,晋卫军.ZnS掺Mn磷光量子点对金属离子传感机理的探讨[J].化学传感器,2011,31(2):26-32. |
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| 作者姓名： | 段玉娇 李文婷 申前进 晋卫军 |
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| 作者单位： | 北京师范大学化学学院,北京,100875 |
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| 摘 要： | 合成了以3-巯基丙酸或L-半胱氨酸修饰的水溶性ZnS掺Mn磷光量子点,磷光发射峰在590 nm,产生于Mn2+的4T1-6A1跃迁.磷光信号稳定,不易受溶解氧的影响.检测了七种常见金属离子对磷光性质的影响,结果表明:对于3-巯基丙酸修饰的ZnS:Mn量子点,Cu2+,Mn2+,Fe3+,Co2+,pb2和Hg2+离子能...
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| 关 键 词： | ZnS掺Mn量子点 磷光 金属离子 猝灭 |
Phosphorescent ZnS doped Mn quantum dots for sensing metal ions and responding mechanism |
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| Duan Yu-jiao,Li Wen-ting,Shen Qian-jin,Jin Wei-jun.Phosphorescent ZnS doped Mn quantum dots for sensing metal ions and responding mechanism[J].Chemical Sensors,2011,31(2):26-32. |
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| Authors: | Duan Yu-jiao Li Wen-ting Shen Qian-jin Jin Wei-jun |
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| Affiliation: | Duan Yu-jiao,Li Wen-ting,Shen Qian-jin,Jin Wei-jun (College of Chemistry,Beijing Normal University,Beijing 100875,China) |
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| Abstract: | Water-soluble Mn2+ doped ZnS phosphorescent quantum dots (QDs) were prepared using 3-mercaptopropionic acid and L-cysteine as stabilizer.Phosphorescent emission peak was at 590nm which originated from 4T1-6A1 transition of Mn2+ ions on Zn2+ sites,and were excited by the energy transferred from the excited electron-hole pairs in the ZnS host.Two kinds of QDs were used to detect metal ions.For 3-MPA capped quantum dots,the presence of Cu2+,Mn2+,Fe3+,Co2+,Pb2+,Hg2+ resulted in quenching of phosphorescence whil... |
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| Keywords: | ZnS doped Mn quantum dots phosphorescence metal ions quenching |
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