title: A fluorescent probe for detecting thiamine using the luminescence intensity of nanoparticles.
abstract: Determination of molecules and biomolecules using nanoparticles is promising in the development of analytical techniques. Modified Eu-doped Y2O3 nanoparticles (Y2O3:Eu NPs) by captopril have been used as a probe for thiamine (vitamin B1) determination. According to the fluorescence enhancement of modified Eu-doped Y2O3 nanoparticles caused by thiamine, a simple and sensitive method were proposed for its detection. The increase in modified Y2O3:Eu NPs fluorescence signal as a function of thiamine concentration was found to be linear in the concentration range of 0-44 μM. The limit of detection (LOD) of thiamine by this method was 0.144 μM. All the measurements were performed in natural pH, at the room temperature under ambient conditions. Possible interaction mechanism was discussed.
authors.affiliation: Department of Engineering Science, College of Engineering, University of Tehran, P.O. Box 11155-4563, Tehran, Iran, bayandori@ut.ac.ir.
authors.forename: Abdolmajid
authors.initials: A
authors.lastname: Bayandori Moghaddam
authors.forename: Forugh
authors.initials: F
authors.lastname: Gudarzy
authors.forename: Yadolah
authors.initials: Y
authors.lastname: Ganjkhanlou
mesh_terms: D005063:Europium / Q000737:chemistry*; D005456:Fluorescent Dyes / Q000032:analysis* / Q000737:chemistry; D049449:Luminescence; D053758:Nanoparticles / Q000737:chemistry*; D013831:Thiamine / Q000032:analysis* / Q000737:chemistry; D015019:Yttrium / Q000737:chemistry*
chemical_list: D005456:Fluorescent Dyes; D005063:Europium; D015019:Yttrium; D013831:Thiamine; C091417:yttria
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