Upconversion fluorescent nanoparticles based-sensor array for discrimination of the same variety red grape wines

Abstract

A fluorescent sensor array composed of upconversion nanomaterials to distinguish the same variety of red grape wines was constructed.

Surface chemistry modified upconversion nanoparticles as fluorescent sensor array for discrimination of foodborne pathogenic bacteria

“…Diametrically opposed to the conventional luminescence sensing elements, UCNPs materials are able to convert low-energy photons (such as near-infrared light) into high-energy photons (such as visible and ultraviolet light), which is ideal for sensing analyte in complex environment [22][23][24]. Moreover, UCNPs-based probes have excellent photo-stability, multicolor tunable property, less toxic elements, negligible autofluorescence background and the minimal photo blinking and photo bleaching [10-12, 21, 25], which can heavily improve the sensitivity and reliability of detection.…”

“…Moreover, UCNPs-based probes have excellent photo-stability, multicolor tunable property, less toxic elements, negligible autofluorescence background and the minimal photo blinking and photo bleaching [10-12, 21, 25], which can heavily improve the sensitivity and reliability of detection. In addition, surface chemistry modification further endows UCNPs materials versatile properties and enables these functional UCNPs materials to realize the tunable charges and solubility, and target diversity, which provides a large library for sensor selection [10,12,22,26,27].…”

“…Recently, the fluorescent sensor arrays constructed from a series of functioned UCNPs probes have exhibited excellent power for identification of analytes (such as phosphate compounds, grape wines, proteins, glycated hemoglobin, vitamin B12, viruses, biotinylated antibodies and human IgG and IgM antibodies) with high classification accuracy in a timely and cost-effective manner [22,[28][29][30][31][32][33]. UCNPs materials have been widely utilized to realize the quantification of single bacteria in previous researches [9][10][11][12]34].…”

Application of NaYF4:Yb/Er/Tm UCNPs in Array-Based Sensing of Neurotransmitters: From a Single Particle to a Multichannel Sensor Array

“…Lanthanide-doped upconversion nanoparticles (UCNPs), which absorb low-energy photons and emit high-energy photons, exhibit fascinating optical properties such as high quantum yield, long lifetime, high photostability, multiple narrow emission bands, and low optical background noise. − These extraordinary characteristics of UCNPs make them attractive candidates for developing UCNP-based fluorescence sensor arrays. The design of optical sensor arrays using UCNPs is a new emerging approach, and to date, only one report has been published on this topic in which six sensor elements have been constructed by surface modification of UCNPs with different ligands …”

“…The design of optical sensor arrays using UCNPs is a new emerging approach, and to date, only one report has been published on this topic in which six sensor elements have been constructed by surface modification of UCNPs with different ligands. 15 In order to design such a multichannel sensor array using a single particle, we have taken advantage of multiple emission bands of lanthanide-doped UCNPs which are related to different energy levels of their dopant ions. A single UCNP has been used for producing multichannel responses.…”