title: Micro-emulsion synthesis, surface modification, and photophysical properties of Zn(1-x) Mn(x)S nanocrystals for biomolecular recognition.
abstract: In this research, we mainly focused on the micro-emulsion synthesis of biotinylated ZnS (zinc sulfide) nanocrystals for avidin recognition. Various samples of Zn(1-x)Mn(x) S, with x = 0.0001, 0.007, 0.02, 0.03, 0.055, 0.09 and 0.13, prepared by quaternary W/O (water-in-oil) microemulsion system. Cyclohexane was used as oil, Triton X-100 as surfactant, n-hexanol as a co-surfactant and mercaptoethanol and thioglycolic acid as linking agents. The obtained products were evaluated by commonly techniques such as: scanning electron microscopy (SEM), transmission electron microscopy (TEM), zeta meter for measurement ZP (zeta potential) and fluorescence spectroscopy analyses. The above-experimental results indicated that the optimum doping concentration of Mn was ~ 5.5% . The fluorescence spectra of the doped crystals consist of orange-red emissions. Eventually, this research showed with increasing more than 18 μl biotin to nanocrystals, no changes were observed in the emission intensity spectra.
authors.affiliation: Biomaterial Group, Faculty of Biomedical Engineering (Center of Excellence), Amirkabir University of Technology, 424 Tehran, Iran.
authors.forename: Elham
authors.initials: E
authors.lastname: Mohagheghpour
authors.forename: Fathollah
authors.initials: F
authors.lastname: Moztarzadeh
authors.forename: Mohammad
authors.initials: M
authors.lastname: Rabiee
authors.forename: Mohammadreza
authors.initials: M
authors.lastname: Tahriri
authors.forename: Maziar
authors.initials: M
authors.lastname: Ashuri
authors.forename: Hassan
authors.initials: H
authors.lastname: Sameie
authors.forename: Reza
authors.initials: R
authors.lastname: Salimi
authors.forename: Shahab
authors.initials: S
authors.lastname: Moghadas
mesh_terms: D001360:Avidin / Q000032:analysis*; D015374:Biosensing Techniques; D001710:Biotin / Q000737:chemistry*; D004655:Emulsions; D000441:Hexanols / Q000737:chemistry; D049449:Luminescence; D008345:Manganese / Q000737:chemistry*; D008623:Mercaptoethanol / Q000737:chemistry; D008855:Microscopy, Electron, Scanning; D046529:Microscopy, Electron, Transmission; D053758:Nanoparticles / Q000737:chemistry / Q000648:ultrastructure; D017830:Octoxynol / Q000737:chemistry; D055668:Photochemical Processes; D013440:Sulfides / Q000737:chemistry*; D013499:Surface Properties; D013501:Surface-Active Agents / Q000737:chemistry; D013864:Thioglycolates / Q000737:chemistry; D014466:Ultraviolet Rays; D017967:Zinc Compounds / Q000737:chemistry*
chemical_list: D004655:Emulsions; D000441:Hexanols; D013440:Sulfides; D013501:Surface-Active Agents; D013864:Thioglycolates; D017967:Zinc Compounds; D001360:Avidin; D008345:Manganese; D008623:Mercaptoethanol; C036260:1-hexanol; D001710:Biotin; C017487:2-mercaptoacetate; D017830:Octoxynol; C031238:zinc sulfide