Lanthanide based dual-emission fluorescent probe for detection of mercury (II) in milk

Tan, Hongliang; Li, Qian; Ma, Chanjiao; Song, Yonghai; Xu, Fugang; Chen, Shouhui; Wang, Li

doi:10.1016/j.bios.2014.08.015

Cited by 63 publications

(23 citation statements)

References 34 publications

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“…4(b) demonstrated the gradient enhancements of fluorescence emission intensities of Eu Ш -dtpa-bis(melamine) at 562 nm with the increase of melamine concentrations (0-1000 µmol/L). It predicted that the Eu Ш -dtpa-bis(melamine) might be used for the detection of melamine [33]. Fig.…”

Section: Fluorescence Spectrum Of Eu-dtpa-bis(melamine)mentioning

confidence: 99%

Design and synthesis of a novel lanthanide fluorescent probe (EuIII-dtpa-(bis)melamine) and application in melamine detection in milk products

Jiang

Tian

Yang

et al. 2017

Sensors and Actuators B: Chemical

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highly selective fluorescence "turn-on" response. The competitive assay showed that the presence of other analogues (cyanuric acid, cyanuric chloride, trichloroisocyanuric acid and acetoguanamine) rarely affected the turn-on fluorescence intensity in probing melamine. The obtained results displayed a linear correlation beteewn melamine concentration and fluorescence intensity. The linear equation was y = 38.68x + 568.32 (R 2 = 0.9972) with melamine concentration ranged from 5-100 µmol/L. When melamine concentration reaches 100 µmol/L, the fluorescence intensity becomes the maximum. The formed Eu III-dtpa-bis(melamine)-melamine complex was extremly stable with the stability constant (k) of 9.90 × 10 6 and the complexation ratio was 1:1. The detection limit (LOD) was 0.3743 µmol/L. The recoveries ranged from 99.80 to 100.50 %, when melamine was detected in some milk products. It can be confirmed that Eu III-dtpa-bis(melamine) shows high selectivity, sensitivity, targeting and recognition ability in melamine detection.

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Section: Fluorescence Spectrum Of Eu-dtpa-bis(melamine)mentioning

confidence: 99%

Design and synthesis of a novel lanthanide fluorescent probe (EuIII-dtpa-(bis)melamine) and application in melamine detection in milk products

Jiang

Tian

Yang

et al. 2017

Sensors and Actuators B: Chemical

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“…They developed a dual-emission°uorescent probe for mercury detection in water and milk, through the combination of two Ln(III) chelates with di®erent emission wavelengths. 85 …”

Section: Fluorescent Silica Nanoparticlesmentioning

confidence: 99%

The role of surface functionalization of silica nanoparticles for bioimaging

Gomes

Trindade

Tomé

2016

J. Innov. Opt. Health Sci.

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Among the several types of inorganic nanoparticles available, silica nanoparticles (SNP) have earned their relevance in biological applications namely, as bioimaging agents. In fact,°uorescent SNP (FSNP) have been explored in this¯eld as protective nanocarriers, overcoming some limitations presented by conventional organic dyes such as high photobleaching rates. A crucial aspect on the use of°uorescent SNP relates to their surface properties, since it determines the extent of interaction between nanoparticles and biological systems, namely in terms of colloidal stability in water, cellular recognition and internalization, tracking, biodistribution and specicity, among others. Therefore, it is imperative to understand the mechanisms underlying the interaction between biosystems and the SNP surfaces, making surface functionalization a relevant step in order to take full advantage of particle properties. The versatility of the surface chemistry on silica platforms, together with the intrinsic hydrophilicity and biocompatibility, make these systems suitable for bioimaging applications, such as those mentioned in this review.

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“…However, the rational design of molecular-based lanthanide indicators still has much difficulty in real mediums due to the competitive coordination of polar solvents or water molecules. Consequently, quite a few new strategies have been developed for the integration of lanthanide complex systems into a wide range of solid supports. − It is known that layered double hydroxide (LDH), a typical 2D inorganic layered solid host, is composed of positively charged layers and interlayer balancing anionic species and water molecules. − Its well-defined inorganic layered structure will certainly improve the chemical stability of luminescent centers and the natural basicity of LDH can effectively protect the lanthanide emissions. It will be the first case study for the coordination entrapment of europium complex into LDH matrix, and its sensing performance has been explored.…”

Section: Introductionmentioning

confidence: 99%

Tetracycline Generated Red Luminescence Based on a Novel Lanthanide Functionalized Layered Double Hydroxide Nanoplatform

Zhou

Gao

et al. 2019

J. Agric. Food Chem.

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Considerable interest in using lanthanide complexes in optics have been well-known persisted for a long time. But such molecular-based edifices have been excluded from practical application because of their poor thermal or photo stabilities. Here a novel europium embedded layered double hydroxide (Mg−Al LDH−Eu) has been established and such an inorganic−organic framework demonstrates improved thermal performance due to hydrolysis and poly condensation of the trimethoxysilyl-unit. In addition, the incorporation of a functional building block such as ethylenediamine triacetic acid can significantly minimize the negative effects of hydroxyl groups. In the presence of tetracycline (Tc), the nanoprobe exhibits an "off−on" change in aqueous solution, and the red luminescence can be excited in the visible light range (405 nm). It provides a very sensitive signal response to Tc with an excellent linear relation in the range of 0.1 μM to 5.0 μM, and the detection limit of this probe is measured to be 7.6 nM. This nanoplatform exhibits low cytotoxicity during in vitro experiments and can be employed for the detection of tetracycline in 293T cells.

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Lanthanide based dual-emission fluorescent probe for detection of mercury (II) in milk

Cited by 63 publications

References 34 publications

Design and synthesis of a novel lanthanide fluorescent probe (EuIII-dtpa-(bis)melamine) and application in melamine detection in milk products

Design and synthesis of a novel lanthanide fluorescent probe (EuIII-dtpa-(bis)melamine) and application in melamine detection in milk products

The role of surface functionalization of silica nanoparticles for bioimaging

Tetracycline Generated Red Luminescence Based on a Novel Lanthanide Functionalized Layered Double Hydroxide Nanoplatform

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