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Mercaptopropionic acid capped ZnS:Mn/ZnS core/shell quantum dots as fluorescence probe for folic acid detection

  • Xi'an Jiaotong University
  • Sri Guru Granth Sahib World University

科研成果: 书/报告/会议事项章节会议稿件同行评审

7 引用 (Scopus)

摘要

In this work, high quality 3-mercaptopropionic acid (MPA) capped ZnS:Mn/ZnS quantum dots (QDs) have been synthesized via chemical precipitation approach. Structure analysis done by XRD and TEM shows that the prepared QDs are mono-dispersed with with a size distribution of 3-5nm. Optical features of the core/shell QDs have been characterized by UV-Visible spectroscopy and photoluminescence spectrometer (PL). The addition of folic acid (FA) to ZnS:Mn/ZnS QDs solution leads to a linear range of quenching of PL with the concentration of FA from 2μM/L to 60μM/L. It thus provides an opportunity to apply MPA capped ZnS:Mn/ZnS QDs as a sensitive fluorescence probe for FA detection. The detection limit is 0.48μM/L. The fluorescence quenching mechanism caused by FA was also studied.

源语言英语
主期刊名2015 IEEE 10th International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2015
出版商Institute of Electrical and Electronics Engineers Inc.
306-309
页数4
ISBN(电子版)9781467366953
DOI
出版状态已出版 - 1 7月 2015
活动10th IEEE International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2015 - Xi'an, 中国
期限: 7 4月 201511 4月 2015

出版系列

姓名2015 IEEE 10th International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2015

会议

会议10th IEEE International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2015
国家/地区中国
Xi'an
时期7/04/1511/04/15

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