Dye-assembled nanocomposites for rapid upconversion luminescence sensing of Cu2+

Huang, Xiaohua; Wang, Lijia; Zhang, Xiaojun; Yin, Xuehua; Bin, Na; Zhong, Fenfen; Liu, Yingju; Cai, Qingyun

doi:10.1016/j.snb.2017.03.092

Cited by 26 publications

(27 citation statements)

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“…The LOD is calculated using the formula 3δ/ S where δ denotes standard deviation and S is the slope. The LOD of Cu 2+ ions using current PAA-UCNPs based sensor is as low as 0.1 μM, which is superior to that of existing upconversion Cu 2+ detection methods (Sarkar et al, 2014 ; Huang et al, 2017 ). Also, the LOD of the current PAA-UCNPs platform is comparable with the values reported in the literature (Wang et al, 2014 ).…”

Section: Resultsmentioning

confidence: 82%

“…Also, the LOD of the current PAA-UCNPs platform is comparable with the values reported in the literature (Wang et al, 2014 ). The meso-tetra(4-sulfonatophenyl)porphine dihydrochlorid (TSPP) on SiO 2 -encapsulated NaYF 4 :Yb,Er,Gd UCNPs based platform for the detection of Cu 2+ ions with a LOD of 2.16 μM was reported by the Huang et al ( 2017 ). These results indicate that the current PAA-UCNPs based platform exhibits superior sensitivity for Cu 2+ detection.…”

Section: Resultsmentioning

confidence: 99%

“…Low energy NIR light excitation provides a high sensitivity detection system with negligible auto-fluorescence and light scattering. In this regards, different research groups have developed UCNPs based sensors for the detection of organic and inorganic entities such as toluene/phenol (Ma et al, 2014 ), organophosphorus (Wang et al, 2016 ), Zinc (Han et al, 2010 ), Mercury (Li et al, 2014 ; Wu et al, 2016 ), Cyanide (Liu et al, 2011 ), and other entity (Huang et al, 2017 ).…”

Section: Introductionmentioning

confidence: 99%

“…In UCNPs based sensors, the UCNPs serve as the energy donors, while, the target chromophores act as energy acceptors (Huang et al, 2017 ). Until now, the UCNPs are employed as energy donors and the family of rhodamine B (RhB) as energy acceptor in the Förster resonance energy transfer (FRET) based Cu 2+ detection.…”

Section: Introductionmentioning

confidence: 99%

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PAA Modified Upconversion Nanoparticles for Highly Selective and Sensitive Detection of Cu2+ Ions

Tan

et al. 2021

Front. Chem.

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Detection of the Cu2+ ions is crucial because of its environmental and biological implications. The fluorescent-based organic sensors are not suitable for Cu2+ detection due to their short penetration depth caused by the UV/visible excitation source. Therefore, we have demonstrated a highly sensitive and selective near-infrared (NIR) excitable poly(acrylic acid) (PAA) coated upconversion nanoparticles (UCNPs) based sensor for Cu2+ detection. We construct the PAA modified Na(Yb, Nd)F4@Na(Yb, Gd)F4:Tm@NaGdF4 core-shell-shell structured UCNPs based sensor via a co-precipitation route. The upconversion emission intensity of the PAA-UCNPs decreases linearly with the increase in the Cu2+ concentration from 0.125 to 3.125 μM due to the copper carboxylate complex formation between Cu2+ and PAA-UCNPs. The calculated detection limit of the PAA-UCNPs based sensor is 0.1 μM. The PAA-UCNPs based sensor is very sensitive and selective toward detecting the Cu2+ ions, even when the Cu2+ co-exist with other metal ions. The EDTA addition has significantly reversed the upconversion emission quenching by forming the EDTA-Cu2+ complex based on their greater affinity toward the Cu2+. Therefore, the PAA-UCNPs based sensor can be a promising candidate for Cu2+ detection because of their higher sensitivity and selectivity under 980 nm NIR excitation.

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Section: Resultsmentioning

confidence: 82%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

PAA Modified Upconversion Nanoparticles for Highly Selective and Sensitive Detection of Cu2+ Ions

Tan

et al. 2021

Front. Chem.

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“…Cu 2+ is the third abundant trace metal ion in human body and many researches on Cu 2+ detection have been reported. Cai and co‐workers constructed a novel probe by assembling dyes onto SiO 2 ‐coated upconversion nanorods and found that Cu 2+ can combine with the dye and quench the UCL. Shi and co‐workers employed the similar strategy to detect Cu 2+ and applied this detection in living cells .…”

Section: Ucnp‐based Nanoprobes For Different Analyte Detectionmentioning

confidence: 99%

Recent Advances on Functionalized Upconversion Nanoparticles for Detection of Small Molecules and Ions in Biosystems

2018

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Significant progress on upconversion‐nanoparticle (UCNP)‐based probes is witnessed in recent years. Compared with traditional fluorescent probes (e.g., organic dyes, metal complexes, or inorganic quantum dots), UCNPs have many advantages such as non‐autofluorescence, high chemical stability, large light‐penetration depth, long lifetime, and less damage to samples. This article focuses on recent achievements in the usage of lanthanide‐doped UCNPs as efficient probes for biodetection since 2014. The mechanisms of upconversion as well as the luminescence resonance energy transfer process is introduced first, followed by a detailed summary on the recent researches of UCNP‐based biodetections including the detection of inorganic ions, gas molecules, reactive oxygen species, and thiols and hydrogen sulfide.

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Ultrasensitive and Recyclable Upconversion‐Fluorescence Fibrous Indicator Paper with Plasmonic Nanostructures for Single Droplet Detection

Zhang

et al. 2019

Advanced Optical Materials

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attention due to their extensive biological and medical applications. [1][2][3][4][5] Conventional indicator paper such as pH paper is disposable after use. Similarly, a traditional particulate-based fluorescence sensor is also not reusable because it usually suspends fluorescent nanoparticles such as quantum dots and upconversion nanocrystals in the target solution to initiate detection, [6][7][8][9] which are often unstable and irreproducible when contaminated by the target solution. Additionally, these indicator papers and fluorescence sensors usually need large amounts of the target solutions, which severely restricts their widespread application, especially for small amounts of target solutions, such as a single droplet. On the other hand, the sensitivities of current fluorescence indicator paper and sensors are still expected to improve because a higher sensitivity can respond to target solutions with a lower concentration, which will benefit the application of trace detection. [10,11] Therefore, it is highly desired to develop fluorescence indicator paper or sensor that simultaneously possesses excellent sensitivity and recyclability for single droplet detection.Among fluorescent nanoparticles, upconversion nanocrystals, compared with quantum dots, are attractive candidates because they can be excited by near-infrared light, which has a high penetration depth in biological tissues. [12,13] Moreover, fluorophores with stronger fluorescence can suppress background noise and autofluorescence, bringing about more sensitive detection. [14,15] To achieve stronger fluorescence, plasmonic nanostructures are good choices because they can produce strong localized electric fields, affecting excitation or emission process of nearby fluorophores to enhance their fluorescence; this process must not change the chemical construction of fluorophores, which is not an easy task. [16,17] Superhydrophobicity signifies that the material does not readily become damp, with a water contact angle over 150°. [18] To achieve recyclability, immediate contact of fluorescent nanoparticles with target solutions must be avoided. Utilizing electrospinning is a good method to achieve this, because it can easily incorporate nanoparticles into superhydrophobic nanofibers during the electrospinning process, [19][20][21][22] which endows them with a self-cleaning property. In addition, the large specific surface area of electrospun Conventional indicator paper is disposable after use and requires a large amount of target solution. Herein, recyclable upconversion fluorescence indicator papers consisting of upconversion nanorods and plasmonic nanostructures are fabricated by electrospinning. This recyclable indicator paper exhibits good flexibility and superhydrophobicity with enhanced upconversion fluorescence. Rhodamine B (RhB) is selected as the target solution because it is prohibited as a food additive but often occurs in food, and conventional detection methods usually need a large volume of solution (>1 mL) to refine to higher concentratio...

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Dye-assembled nanocomposites for rapid upconversion luminescence sensing of Cu2+

Cited by 26 publications

References 61 publications

PAA Modified Upconversion Nanoparticles for Highly Selective and Sensitive Detection of Cu2+ Ions

PAA Modified Upconversion Nanoparticles for Highly Selective and Sensitive Detection of Cu2+ Ions

Recent Advances on Functionalized Upconversion Nanoparticles for Detection of Small Molecules and Ions in Biosystems

Ultrasensitive and Recyclable Upconversion‐Fluorescence Fibrous Indicator Paper with Plasmonic Nanostructures for Single Droplet Detection

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