An eco-friendly molecularly imprinted fluorescence composite material based on carbon dots for fluorescent detection of 4-nitrophenol

Hao, Tongfan; Xiao, Wen‐Jing; Nie, Yijing; Xu, Yeqing; Yan, Yongsheng; Zhou, Zhiping

doi:10.1007/s00604-016-1851-2

Cited by 122 publications

(39 citation statements)

References 35 publications

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“…This result indicates the excellent selectivity of the MOG (Eu) xerogel towards 4‐NP, even in the presence of other aromatics and aliphatic nitro compounds. As illustrated in Table S4, the high K sv value of the MOG(Eu) xerogel towards 4‐NP is comparable with that of the reported famous crystalline MOF sensors …”

Section: Resultssupporting

confidence: 80%

Metathesis in Metal–Organic Gels (MOGs): A Facile Strategy to Construct Robust Fluorescent Ln‐MOG Sensors for Antibiotics and Explosives

et al. 2018

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It is essential to develop new effective sensor materials for the detection of antibiotics and organic explosives, due to their negative impacts on ecosystems and human health. In this work, guided by an in situ metal-node metathesis approach, a fluorescent metal-organic gel [MOG(Eu) gel] has been synthesized for the first time by metal-ion exchange between Eu 3+ and Al 3+ in the nonfluorescent MOG(Al) gel. More importantly, the postsynthetic MOG(Eu) xerogel shows remarkable se-Synthesis of MOG(Al) Gel Material: MOG(Al) gel was synthesized easily from a mixture of Al(NO 3 ) 3 ·9H 2 O (0.5627 g, 1.5 mmol), 1,3,5benzentricarboxylic acid (0.2101 g, 1 mmol), and ethanol (16 mL), as explained in literature. [31] The mixture was stirred to solution at room temperature before being transferred to a Teflon-lined steel autoclave, and then heated at 120°C for 6 h. The light-yellow wet gel formed upon cooling to room temperature, and was washed with ethanol three times. Synthesis of MOG(Eu) Xerogel Material:The wet MOG(Eu) gel was obtained by soaking the above-synthesized MOG(Al) gel in an ethanol solution of Eu(NO 3 ) 3 ·6H 2 O (30 mL, 3.5 mmol) for seven days. The in situ central-metal exchange led to the fresh wet MOG(Eu) gel. The wet gel was washed with ethanol to remove redundant Eu 3+ and Al 3+ ions, and then xerogel products were prepared by drying the gel in vacuo in an oven at 80°C for 12 h. The pH and Water Stability Tests:To test the stability of the MOG(Eu) xerogel, samples were soaked in aqueous solutions with different pH values (pH 1, 3, 5, 7, 9, 11, and 12) for 24 h. After soaking and drying, the samples were used to determine PXRD mpatterns. Luminescent Experiments:The suspensions of MOG(Eu) xerogel/ antibiotics and MOG(Eu) xerogel/explosives were prepared by adding pulverous xerogel (5 mg) into aqueous solutions (10 mL, 5 × 10 -4 mol L -1 ) of explosives or antibiotics at room temperature. Before the luminescence measurements, all of the mixtures were treated by ultrasonication for 30 min to form stable emulsions. In a set of experiments of selective detection, 5 mg of MOG(Eu) xerogel was added to separate solutions (5 × 10 -4 mol L -1 each) of dimetridazole, metronidazole, ornidazole, and ronidazole in the presence of other antibiotics (5 × 10 -4 mol L -1 ). Similarly, a sample (5 mg) was added to a solution (5 × 10 -4 mol L -1 ) of 4-nitrophenol in the presence of another analytes (5 × 10 -4 mol L -1 ). Before the luminescence measurements, all of the mixtures were treated by ultrasonication for 30 min to form stable emulsions.

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Section: Resultssupporting

confidence: 80%

Metathesis in Metal–Organic Gels (MOGs): A Facile Strategy to Construct Robust Fluorescent Ln‐MOG Sensors for Antibiotics and Explosives

et al. 2018

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“…10 Moreover, the uorescence sensors fabricated by MIP and quantum dots have been fabricated for the detection of 4-NP. 9,11,12 The dynamic range of MIP-CD-based sensors is in the range of 0.2-50 mM with LOD of 40-60 nM. 9,11,12 In this study, a wide dynamic range of 4 orders of magnitude with low LOD values of 0.7-3.5 nM in different matrices of aqueous solution is obtained, which is superior to the most reported data shown in Table 1.…”

Section: Detection Of 4-np By S-gqdsmentioning

confidence: 48%

“…More recently, uorescence spectrophotometry has been developed for highly sensitive detection of 4-NP. [10][11][12] Yang et al 10 have used BSA Aunanocrystals as a uorescence probe to detect 4-NP in deionized water. Several nanomaterials including molecularly imprinting polymer-carbon dots (MIP-CD) and CdTe have also been synthesized as the uorescence probe for 4-NP detection in deionized water.…”

Section: Introductionmentioning

confidence: 99%

“…Several nanomaterials including molecularly imprinting polymer-carbon dots (MIP-CD) and CdTe have also been synthesized as the uorescence probe for 4-NP detection in deionized water. 11,12 However, the sensitivity of these MIPbased sensing probes is not high and the limit of detection (LOD) are usually in the range of 40-60 nM. In addition, only deionized or river water was used as the water matrix and the information on the application of sensing probe to detect 4-NP in the complicated matrix is limited.…”

Section: Introductionmentioning

confidence: 99%

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Sulfur-doped graphene quantum dot-based paper sensor for highly sensitive and selective detection of 4-nitrophenol in contaminated water and wastewater

2019

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“…The following year, Hao et al also developed an eco-friendly MIP-CD-based sensor for 4-nitrophenol detection in aqueous samples. The sensor was designed such that the polymer matrix contained abundant recognition sites for 4-nitrophenol to bind the sensor surface through hydrogen bonding, and consequently resulting in fluorescence quenching phenomena due to electron transfer from the CDs to 4-nitrophenol [ 248 ]. Although the study did not report on the cross-sensitivity toward Fe 3+ ions, the group outlined the merits of the developed sensor in terms of reliability, accurate analysis of real samples, linear detection range of 0.2–50 μmol L −1 , and LOD of 0.06 μmol L −1 .…”

Section: Sensing Applicationsmentioning

confidence: 99%

Biogreen Synthesis of Carbon Dots for Biotechnology and Nanomedicine Applications

2018

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Over the past decade, carbon dots have ignited a burst of interest in many different fields, including nanomedicine, solar energy, optoelectronics, energy storage, and sensing applications, owing to their excellent photoluminescence properties and the easiness to modify their optical properties through doping and functionalization. In this review, the synthesis, structural and optical properties, as well as photoluminescence mechanisms of carbon dots are first reviewed and summarized. Then, we describe a series of designs for carbon dot-based sensors and the different sensing mechanisms associated with them. Thereafter, we elaborate on recent research advances on carbon dot-based sensors for the selective and sensitive detection of a wide range of analytes, including heavy metals, cations, anions, biomolecules, biomarkers, nitroaromatic explosives, pollutants, vitamins, and drugs. Lastly, we provide a concluding perspective on the overall status, challenges, and future directions for the use of carbon dots in real-life sensing.

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An eco-friendly molecularly imprinted fluorescence composite material based on carbon dots for fluorescent detection of 4-nitrophenol

Cited by 122 publications

References 35 publications

Metathesis in Metal–Organic Gels (MOGs): A Facile Strategy to Construct Robust Fluorescent Ln‐MOG Sensors for Antibiotics and Explosives

Metathesis in Metal–Organic Gels (MOGs): A Facile Strategy to Construct Robust Fluorescent Ln‐MOG Sensors for Antibiotics and Explosives

Sulfur-doped graphene quantum dot-based paper sensor for highly sensitive and selective detection of 4-nitrophenol in contaminated water and wastewater

Biogreen Synthesis of Carbon Dots for Biotechnology and Nanomedicine Applications

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