A magnesium MOF as a sensitive fluorescence sensor for CS<sub>2</sub> and nitroaromatic compounds

Wu, Zhaofeng; Tan, Bin; Feng, Mei‐Ling; Lan, Anjian; Huang, Xiao‐Ying

doi:10.1039/c3ta15071b

Cited by 113 publications

(43 citation statements)

References 69 publications

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“…Organic molecules containing nitro groups are well known for their electron-defi cient nature and strong luminescence quenching effect, which can be benefi cial for detection of many nitro-containing explosives. [101][102][103][104][105][106][107][108][109] Li et al demonstrated the fi rst application of luminescent MOFs in detection of nitro explosives. [ 100 ] The guest-free LMOF-111 ( fl uorescence emission centered at 420 nm upon excitation at 320 nm, which was assigned to the organic linkers.…”

Section: Nitro-containing and Aromatic Compoundsmentioning

confidence: 99%

Photoluminescent Metal–Organic Frameworks for Gas Sensing

et al. 2016

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Luminescence of porous coordination polymers (PCPs) or metal–organic frameworks (MOFs) is sensitive to the type and concentration of chemical species in the surrounding environment, because these materials combine the advantages of the highly regular porous structures and various luminescence mechanisms, as well as diversified host‐guest interactions. In the past few years, luminescent MOFs have attracted more and more attention for chemical sensing of gas‐phase analytes, including common gases and vapors of solids/liquids. While liquid‐phase and gas‐phase luminescence sensing by MOFs share similar mechanisms such as host‐guest electron and/or energy transfer, exiplex formation, and guest‐perturbing of excited‐state energy level and radiation pathways, via various types of host‐guest interactions, gas‐phase sensing has its unique advantages and challenges, such as easy utilization of encapsulated guest luminophores and difficulty for accurate measurement of the intensity change. This review summarizes recent progresses by using luminescent MOFs as reusable sensing materials for detection of gases and vapors of solids/liquids especially for O2, highlighting various strategies for improving the sensitivity, selectivity, stability, and accuracy, reducing the materials cost, and developing related devices.

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Section: Nitro-containing and Aromatic Compoundsmentioning

confidence: 99%

Photoluminescent Metal–Organic Frameworks for Gas Sensing

et al. 2016

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“…[14][15][16][17][18][19][20] While compared with mostly studied compaction and sintering processes, this step is less concerned. Based on previous studies on the packing of coarse particles or fine powders, An et al have identified that by using external energy generated by mechanical vibration or compression, the transition from the so called random loose packing (RLP) to random close packing (RCP) can be reproduced numerically and physically, [21][22][23][24][25][26] where the obtained RCP structure with densest random packing density, small pore size, and uniform pore size distribution can provide the researchers with effective starting point, useful ideas, and references for high-quality PM production. However, to date, corresponding studies which considering the effects of initial packing structures on the packing densification during powder die compaction is limited.…”

Section: Introductionmentioning

confidence: 99%

Finite Element Modeling on the Compaction of Copper Powder Under Different Conditions

Zhang²,

Zhang

et al. 2015

Metall Mater Trans A

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Single-action die compaction of copper powders with initial loose natural packing and vibrated random dense packing structures was carried out numerically by finite element method and physically for validation. Furthermore, the compaction under various cyclic loadings was modeled to identify its effects on the compact properties. The results were analyzed and compared between compacts formed at different initial packing structures and different forming conditions, which indicate that at the same pressure, single-action die compaction on the dense uniform initial packing can produce compacts with high relative density, uniform density and stress distributions, which implies the necessity to improve initial packing density and uniformity in forming high performance compacts. Meanwhile, by using cyclic loading on such dense initial packing structures, compacts with higher packing density and more uniform density and stress distributions can be created. The numerical and physical results are comparable and in good agreement with the proposed double logarithmic equation.

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“…Hu et al published an excellent review on the mechanisms of and research into metal-organic frameworks for small-molecule detection [85]. Xu et al developed a nanoscale MOF to detect nitroaromatics in ethanol [86], and Wu et al used a MOF for carbon disulfide and nitrobenzene detection [87]. Ma et al [88] developed a U-bent PMMA optical fiber coated with a porous fluorescent polymer that experienced quenching with TNT (LOD:10 ng mL −1 ) and DNT.…”

Section: Luminescencementioning

confidence: 98%

Advances in explosives analysis—part II: photon and neutron methods

et al. 2015

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The number and capability of explosives detection and analysis methods have increased dramatically since publication of the Analytical and Bioanalytical Chemistry special issue devoted to Explosives Analysis [Moore DS, Goodpaster JV, Anal Bioanal Chem 395:245-246, 2009]. Here we review and critically evaluate the latest (the past five years) important advances in explosives detection, with details of the improvements over previous methods, and suggest possible avenues towards further advances in, e.g., stand-off distance, detection limit, selectivity, and penetration through camouflage or packaging. The review consists of two parts. Part I discussed methods based on animals, chemicals (including colorimetry, molecularly imprinted polymers, electrochemistry, and immunochemistry), ions (both ion-mobility spectrometry and mass spectrometry), and mechanical devices. This part, Part II, will review methods based on photons, from very energetic photons including X-rays and gamma rays down to the terahertz range, and neutrons.

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A magnesium MOF as a sensitive fluorescence sensor for CS₂ and nitroaromatic compounds

Abstract: A magnesium MOF, namely Mg5(OH)2(BTEC)2(H2O)4·11H2O (1) (H4BTEC = pyromellitic acid), has been synthesized and characterized, which reveals a highly selective fluorescence sensing of CS2 and nitroaromatic compounds.

Cited by 113 publications

References 69 publications

Photoluminescent Metal–Organic Frameworks for Gas Sensing

Photoluminescent Metal–Organic Frameworks for Gas Sensing

Finite Element Modeling on the Compaction of Copper Powder Under Different Conditions

Advances in explosives analysis—part II: photon and neutron methods

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A magnesium MOF as a sensitive fluorescence sensor for CS2 and nitroaromatic compounds

Abstract: A magnesium MOF, namely Mg5(OH)2(BTEC)2(H2O)4·11H2O (1) (H4BTEC = pyromellitic acid), has been synthesized and characterized, which reveals a highly selective fluorescence sensing of CS2 and nitroaromatic compounds.

Cited by 113 publications

References 69 publications

Photoluminescent Metal–Organic Frameworks for Gas Sensing

Photoluminescent Metal–Organic Frameworks for Gas Sensing

Finite Element Modeling on the Compaction of Copper Powder Under Different Conditions

Advances in explosives analysis—part II: photon and neutron methods

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Product

Resources

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A magnesium MOF as a sensitive fluorescence sensor for CS₂ and nitroaromatic compounds