title: Enhancing electrochemical detection of dopamine via dumbbell-like FePt-Fe3O4nanoparticles.
abstract: We synthesize dumbbell-like FePt-Fe3O4nanoparticles (NPs) and study their electrocatalytic oxidation and sensing of dopamine (DA). The FePt and Fe3O4NPs are strongly coupled in the dumbbell structure and as a result, the dumbbell FePt-Fe3O4NPs show the best activity for DA oxidation with the DA detection limit reaching 1 nM. They are used successfully to monitor the DA concentration increase induced by K+-stimulation of PC12 cells. Our data show that an electrode modified with dumbbell-like FePt-Fe3O4NPs can serve as the most sensitive probe for real-time quantitative detection of DA in a neurological environment.
authors.affiliation: MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China.
authors.forename: Weiwei
authors.initials: W
authors.lastname: Yang
authors.affiliation: MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China.
authors.forename: Yongsheng
authors.identifier: http://orcid.org/0000-0002-3907-693X
authors.initials: Y
authors.lastname: Yu
authors.affiliation: Department of Neurology, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, China.
authors.forename: Ying
authors.initials: Y
authors.lastname: Tang
authors.affiliation: MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China.
authors.forename: Keyun
authors.initials: K
authors.lastname: Li
authors.affiliation: MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China.
authors.forename: Zheng
authors.initials: Z
authors.lastname: Zhao
authors.affiliation: MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China.
authors.forename: Menggang
authors.initials: M
authors.lastname: Li
authors.affiliation: MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China.
authors.forename: Geping
authors.initials: G
authors.lastname: Yin
authors.affiliation: Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, China.
authors.forename: Haibo
authors.initials: H
authors.lastname: Li
authors.affiliation: Department of Chemistry, Brown University, Providence, Rhode Island 02912, USA. ysyu@hit.edu.cn ssun@brown.edu.
authors.forename: Shouheng
authors.initials: S
authors.lastname: Sun