Water-soluble BaYF5:Yb3+/Er3+ nanoparticles with the surface functionalized by a layer of poly(acrylic acid) (PAA) were synthesized via a facile one-step PAA-assisted hydrothermal method. Bovine serum albumin (BSA) protein was conjugated with BaYF5:Yb3+/Er3+ upconversion nanoparticles via free carboxylic acid groups on the surface of nanoparticles. The final products were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), infrared (IR) spectrophotometry, ultraviolet (UV) spectrophotometry and photoluminescence spectroscopy (PL). The XRD results showed that PAA-capped BaYF5:Yb3+/Er3+ upconversion nanoparticles could be obtained via a PAA assisted hydrothermal process with the pH value of 8 at 200 degrees C for 24 h. The TEM results showed that the morphology of BaYF5:Yb3+/Er3+ nanoparticles was spherical particles with an average diameter of about 4 nm. The IR and UV spectra showed that BSA has been conjugated with BaYF5:Yb3+/Er3+ up-conversion nanoparticles. The luminescence properties of BaYF5:Yb3+/Er3+ up-conversion nanoparticles were also studied. The luminescence properties of the products suggest that BaYF5:Yb3+/Er3+ upconversion nanoparticles have promising applications for labels in biological assays.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1166/jnn.2014.7972 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Unlocking advanced thermometric capabilities: BiVO: Er/Yb nanophosphors with dual-mode up-conversion and down-shifting features.
RSC Adv
January 2025
Department of Condensed Matter Physics, GdS Optronlab, LUCIA Building, University of Valladolid Paseo de Belén 19 47011 Valladolid Spain.
Luminescent materials doped with rare-earth (RE) ions have emerged as powerful tools in thermometry, offering high sensitivity and accuracy. However, challenges remain, particularly in maintaining efficient luminescence at elevated temperatures. This study investigates the thermometric properties of BiVO: Yb/Er (BVO: Er/Yb) nanophosphors synthesized the sol-gel method.
View Article and Find Full Text PDFNIR Light-triggered Green Emitting Perovskite-based Phosphor for Optical Thermometry and Future Molecular Logic Gate Applications.
J Fluoresc
November 2024
Department of Physics and Photonics Science, National Institute of Technology, Hamirpur, 177005, H.P, India.
Article Synopsis
- * The phosphors demonstrated energy emissions in green and red when exposed to a 980 nm infrared light, with power-dependent studies revealing insights into the up-conversion process and temperature sensitivity from 303 to 583 K.
- * Additionally, the materials showed potential for molecular logic gate applications, achieving impressive switching ratios for AND and INHIBIT gates, indicating their usefulness in optical thermometry and future digital devices.
Laser Characteristics of Er/Yb:K-BaF-Al-Phosphate Glasses.
Luminescence
November 2024
Department of Physics, Sri Venkateswara University, Tirupati, India.
Er and Er/Yb-doped phosphate-based glasses have been synthesized by melt quenching technique and are characterized by absorption spectra, infrared emission, decay curves, Fourier transform infrared spectrum and up-conversion studies. From the absorption spectra, intensity parameters and radiative properties have been derived utilizing the Judd-Ofelt theory. Er-doped glass is found to have larger radiative lifetime for the laser originating from I level at 1537 nm.
View Article and Find Full Text PDFLaser-Controlled Information Releasing and Hiding Based on Perovskite Phosphors.
ACS Appl Mater Interfaces
November 2024
School of Information Science and Engineering, Dalian Polytechnic University, Dalian 116034, P.R. China.
Laser-active interference with high confidentiality and convenience opens up a cutting-edge path for releasing and hiding key targets; however, its development still faces enormous challenges owing to the difficulty of concealing objects. Herein, a novel conceptual design for laser-controlled information release and hiding (LIRH) is proposed and successfully realized. CsNaInCl:Er, Yb (CNIC:Er, Yb) perovskite microcrystal is adopted as a carrier for LIRH implementation, exhibiting excellent up-conversion (UC) emission under NIR (980 and 1530 nm) irradiation due to its ultralow phonon energy.
View Article and Find Full Text PDFPatterned Lead-Free Double Perovskite/Polymer Fluorescent Piezoelectric Composite Films for Advanced Anti-Counterfeiting.
Adv Sci (Weinh)
January 2025
Frontier Institute of Science and Technology (FIST), Xi'an Jiaotong University, Xi'an, 710049, China.
The limitations of single fluorescent anti-counterfeiting technologies necessitate the development of more sophisticated encryption methods to protect information and data. Traditional optical anti-counterfeiting encryption techniques, which rely on light sources with varying wavelengths to identify information, are now insufficient to meet contemporary security demands due to their restricted response to a narrow range of wavelengths. In this study, the fabrication of patterned, lead-free double perovskite (DP)/poly(vinylidene fluoride-trifluoroethylene) (P(VDF-TrFE)) fluorescent piezoelectric composite films (CFs) is reported.
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!