Water-dispersible 1-thioglycerol (TG)-capped Mn-doped ZnS quantum dots were prepared in aqueous solution using the nucleation-doping strategy. Using 4% Mn relative to Zn and a Zn(OAc)/NaS ratio of 0.9, Mn:ZnS nanocrystals with an average diameter of 3.9 ± 0.5 nm, with pure Mn-related photoluminescence (PL) at 585 nm, and with a PL quantum yield of 13.2% were obtained. Transmission electron microscopy, X-ray powder diffraction, electron spin resonance, X-ray photoelectron spectroscopy, UV-visible spectroscopy and spectrofluorometry have been used to characterize the crystal structure, the doping status, and the optical properties of the doped-dots. Folic acid (FA) was linked to TG-capped Mn:ZnS nanocrystals to produce Mn:ZnS@TG-FA nanobioconjugates that were used for targeted in vitro delivery to a human cancer cell line. Folate receptor mediated cellular uptake of FA-functionalized dots is proven via confocal and two-photon imaging.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1039/c2tb00247g | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Comparative study on structural, morphological, and optical properties of MS/Fe3O4 nanocomposites and M-doped Fe3O4 nanopowders (M = Mn, Zn).
Sci Rep
September 2024
Department of Physics, Faculty of Sciences, Urmia University, Urmia, Iran.
In the present work, the un-doped, M-doped magnetite (FeO); (M = Mn, Zn), and MS/FeO composite nanopowders with a cubic spinel-type structure and average crystallite size range from 8.30 to 12.33 nm were synthesized by co-precipitation method.
View Article and Find Full Text PDFAmpicillin detection using absorbance biosensors utilizing Mn-doped ZnS capped with chitosan micromaterials.
Heliyon
May 2024
College of Engineering and Computer Science, VinUniversity, Hanoi, 100000, Viet Nam.
The detection of ampicillin plays a crucial role in managing and monitoring its usage and resistance. This study introduces a simple and effective biosensor for ampicillin detection, utilizing the unique absorbance features of Mn-doped ZnS capped by chitosan micromaterials in conjunction with β-lactamase activity. The biosensors can detect ampicillin concentrations from 13.
View Article and Find Full Text PDFDual-channel fluorescent sensors based on chitosan-coated Mn-doped ZnS micromaterials to detect ampicillin.
Sci Rep
May 2024
College of Engineering and Computer Science, VinUniversity, Hanoi, 100000, Vietnam.
The global threat of antibiotic resistance has increased the importance of the detection of antibiotics. Conventional methods to detect antibiotics are time-consuming and require expensive specialized equipment. Here, we present a simple and rapid biosensor for detecting ampicillin, a commonly used antibiotic.
View Article and Find Full Text PDFAnisotropic Growth of Covalent Inorganic Complexes to Nanoplatelets.
Inorg Chem
April 2024
State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China.
Colloidal II-VI semiconductor nanoplatelets (NPLs) provide a new platform in material science due to their unique growth mode and advanced optical properties. However, in contrast to the rapid development of zinc blend structured NPLs, studies on the formation of wurtzite (WZ) NPLs have been limited to the lamellar assembly of specific magic-sized nanoclusters (MSCs). Therefore, the study of new precursors is important for enriching the synthesis strategy, improving the study of two-dimensional (2D) nanocrystal growth mechanisms, and constructing complex nanostructures.
View Article and Find Full Text PDFDevelopment of a new phosphorescence sensor based on surface molecularly imprinted Mn-doped ZnS quantum dots for detection of melamine in milk products.
Spectrochim Acta A Mol Biomol Spectrosc
March 2024
Gazi University, Faculty of Pharmacy, Department of Analytical Chemistry, 06330 Ankara, Turkey. Electronic address:
This paper presents a novel room temperature phosphorescence sensor (IMIPs-ZnS QDs RTP sensor) based on inorganic surface molecularly imprinted polymers and Mn-doped ZnS quantum dots (QDs) for the rapid detection of trace melamine (MEL) in commercial milk products. The surface of Mn-ZnS QDs was modified with 3-(mercaptopropyl) trimethoxy silane (MPTS). Then, MEL, 3-aminopropyltriethoxysilane (APTES) and tetraethoxysilane (TEOS) were used as a template/target molecule, functional monomer, and cross-linker, respectively.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!