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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

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

7 Scopus citations

Abstract

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.

Original languageEnglish
Title of host publication2015 IEEE 10th International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages306-309
Number of pages4
ISBN (Electronic)9781467366953
DOIs
StatePublished - 1 Jul 2015
Event10th IEEE International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2015 - Xi'an, China
Duration: 7 Apr 201511 Apr 2015

Publication series

Name2015 IEEE 10th International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2015

Conference

Conference10th IEEE International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2015
Country/TerritoryChina
CityXi'an
Period7/04/1511/04/15

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