Synthesis of carboxyl-capped and bright YVO4:Eu,Bi nanoparticles and their applications in immunochromatographic test strip assay

White light emitting from YVO4/Y2O3:Eu3+,Bi3+ composite phosphors for UV light-emitting diodes

“…In addition, Bi 3 þ ion could broaden the absorption band edge to longer wavelength (from 350 to 400 nm) [5,6]. YVO 4 : Bi 3 þ ,Eu 3 þ phosphors or composite films [7] were prepared by different methods, such as high temperature solid state reaction [5], solvothermal/hydrothermal methods [8,9], sol-gel method [10], and spray pyrolysis method [11]. In these studies the YVO 4 :Bi 3 þ , Eu 3 þ phosphors were excited by 320-360 nm wavelength and emitted red light.…”

Photoluminescence properties of Y0.5−xGd0.35Eu0.15BixNbO4 (0≤x≤0.30) and Y0.35Gd0.35Eu0.15Bi0.15Nb1−yPyO4 (0≤y≤0.20) phosphors

“…Via introducing the Bi 3+ ion into YNbO 4 phosphors, the emission band will be shifted to the longer wavelength [11]. According to some previous reports [12], the Bi 3+ ion can be also used as the sensitizer to strengthen and broaden the near ultraviolet excitation bands of the Eu 3+ luminescence. In addition, some reports have shown that, to obtain more superior luminescent properties, PO 4 3À group has been usually introduced in YVO 4 :Eu 3+ phosphors [13,14].…”

Red Zn2SiO4:Eu3+ and Mg2TiO4:Mn4+ nanophosphors for on-site rapid optical detections: Synthesis and characterization

“…Approaches that can rapidly screen infectious viruses are expected to provide timely essential medical treatment to infected people and inhibit the proliferation of the virus. Lateral flow assays (LFAs) are a promising biological identification technique for the rapid detection of multiple analytes [1][2][3][4][5][6][7][8]. High sensitivity and stability, excellent portability, and high ability to provide point-of-care testing (POCT) are the advantages of LFAs.…”

“…LFAs are designed for visual inspection using a sample pad, conjugate pad, nitrocellulose (NC) membrane, absorption pad, and plastic backing. In LFA-enabled immunoassays, known as lateral flow immunochromatographic assays (LFIA) [1][2][3][4][5][9][10][11][12], the sample pad contains the analyte, such as human immunoglobulin G (human IgG). On the conjugate pad, proteins (e.g., goat anti-human IgG) are labeled with fluorophores to form conjugated chromatic groups that are used as biological probes to identify the analyte.…”

“…However, high toxicity is a limitation of CdSe-based QDs used for biodetections. NPs of inorganic nanophosphors are also potential luminescent labels [2,[37][38][39][40][41]; they possess unique features such as tunable up/down-conversion luminescence and high chemical stability; moreover, they are easily functionalized [2,40]. The down-conversion carboxylcapped YVO 4 :Eu,Bi has been used as a label for the quantitative analysis of human IgG [2].…”