title: Dopamine fluorescent sensors based on polypyrrole/graphene quantum dots core/shell hybrids.
abstract: A facilely prepared fluorescent sensor was developed for dopamine (DA) detection with high sensitivity and selectivity based on polypyrrole/graphene quantum dots (PPy/GQDs) core/shell hybrids. The composites exhibit strong fluorescence emission, which is dramatically enhanced as high as three times than pristine GQDs. The prepared sensor allows a highly sensitive determination of DA by fluorescent intensity decreasing with the addition of DA and presents a good linearity in range of 5-8000 nM with the detection limit of 10 pM (S/N = 3). Furthermore, the application of the proposed approach have been demonstrated in real samples and showed promise in diagnostic purposes.
authors.affiliation: School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China.
authors.forename: Xi
authors.initials: X
authors.lastname: Zhou
authors.affiliation: School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China.
authors.forename: Peipei
authors.initials: P
authors.lastname: Ma
authors.affiliation: School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China.
authors.forename: Anqi
authors.initials: A
authors.lastname: Wang
authors.affiliation: School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China.
authors.forename: Chenfei
authors.initials: C
authors.lastname: Yu
authors.affiliation: School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China.
authors.forename: Tao
authors.initials: T
authors.lastname: Qian
authors.affiliation: School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China. Electronic address: shishanwu@nju.edu.cn.
authors.forename: Shishan
authors.initials: S
authors.lastname: Wu
authors.affiliation: School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China; Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Nanjing 210046, China. Electronic address: shenj57@nju.edu.cn.
authors.forename: Jian
authors.initials: J
authors.lastname: Shen
mesh_terms: D015374:Biosensing Techniques; D004298:Dopamine / Q000302:isolation & purification*; D005453:Fluorescence; D006108:Graphite / Q000737:chemistry; D057230:Limit of Detection; D011108:Polymers / Q000737:chemistry; D011758:Pyrroles / Q000737:chemistry; D045663:Quantum Dots / Q000737:chemistry*
chemical_list: D011108:Polymers; D011758:Pyrroles; C067635:polypyrrole; D006108:Graphite; D004298:Dopamine
keywords: Dopamine; Fluorescent sensor; Graphene quantum dots; Polypyrrole