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Fluorometric determination of dopamine by using molybdenum disulfide quantum dots
Liu, Xinnan1; Zhang, Wentao1; Huang, Lunjie1; Hu, Na2; Liu, Wei3; Liu, Yingnan1; Li, Sihang1; Yang, Chengyuan1; Suo, Yourui2; Wang, Jianlong1
2018-04-01
Source PublicationMICROCHIMICA ACTA
Volume185Issue:4
SubtypeArticle
AbstractA method is described for the rapid fluorometric determination of dopamine (DA) by using molybdenum disulfide quantum dots (MoS2 QDs) that were fabricated via an ammonium hydroxide etching method. The probe has a fluorescence (with excitation/ emission peaks at 267/380 nm) that is quenched by DA with high selectivity over various interferences. This is attributed to a reaction that occurs between DA and the molybdate ions in pH 9 solutions of MoS2 QDs. The formation of organic molybdate complexes and of dopamine-quinone results in strong quenching of the fluorescence of the QDs which is due to both electron transfer and an inner filter effect. Under the optimum conditions, the assay works in the 0.1-100 mu M DA concentration range, with two linear ranges and a 10 nM detection limit. The method was applied to the determination of DA in spiked artificial urine samples, where it gave recoveries ranging from 97.6 to 102.2%, demonstrating that the method a promising tool for rapid and selective detection of DA.
KeywordDopamine Dynamic Quenching Etching Synthesis Fluorescent Probe Transition Metal Dichalcogenides
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1007/s00604-018-2771-0
WOS KeywordFLUORESCENCE DETECTION ; CARBON DOTS ; MOS2 ; FOOD ; NANOPARTICLES ; SAMPLES ; ACID ; PHOTOLUMINESCENCE ; NANOMATERIALS ; CYSTEINE
Indexed BySCI
Language英语
Funding OrganizationNational Natural Science Foundation of China(21675127) ; Fundamental Research Funds for the Northwest A&F University of China(2014YB093 ; Development Project of Qinghai Key Laboratory(2017-ZJ-Y10) ; 2452015257)
WOS Research AreaChemistry
WOS SubjectChemistry, Analytical
WOS IDWOS:000429381600031
Citation statistics
Document Type期刊论文
Identifierhttp://210.75.249.4/handle/363003/13349
Collection中国科学院西北高原生物研究所
Affiliation1.Northwest A&F Univ, Coll Food Sci & Engn, Yangling 712100, Shaanxi, Peoples R China
2.Chinese Acad Sci, Northwest Inst Plateau Biol, Qinghai Key Lab Qinghai Tibet Plateau Biol Resour, Xining 810008, Qinghai, Peoples R China
3.Yangling Vocat & Tech Coll, Biol Engn Dept, Yangling 712100, Shaanxi, Peoples R China
Recommended Citation
GB/T 7714
Liu, Xinnan,Zhang, Wentao,Huang, Lunjie,et al. Fluorometric determination of dopamine by using molybdenum disulfide quantum dots[J]. MICROCHIMICA ACTA,2018,185(4).
APA Liu, Xinnan.,Zhang, Wentao.,Huang, Lunjie.,Hu, Na.,Liu, Wei.,...&Wang, Jianlong.(2018).Fluorometric determination of dopamine by using molybdenum disulfide quantum dots.MICROCHIMICA ACTA,185(4).
MLA Liu, Xinnan,et al."Fluorometric determination of dopamine by using molybdenum disulfide quantum dots".MICROCHIMICA ACTA 185.4(2018).
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