A luminescent metal–organic framework for selective sensing of Fe3+ with excellent recyclability

Wang, Lin; Yao, Zhao‐Quan; Ren, Guojian; Han, Song De; Hu, Tong‐Liang; Bu, Xian‐He

doi:10.1016/j.inoche.2016.01.004

Cited by 39 publications

(6 citation statements)

References 74 publications

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“…The luminescent intensity at 427 nm presented a linear relationship at a concentration range of 2.0 × 10 −4 ~7.0 × 10 −4 mol•L −1 and R 2 > 0.99 (Figure 5d). Therefore, the Ksv value could reach 8489 L•mol −1 , which is comparable to the previously reported [31][32][33] betterperforming materials. By the calculation of the 3σ/k formula (σ is the standard error; k is the slope), the detection limit for Fe 3+ was found to be 9.04 ppm.…”

Section: Fluorescence Detection Of Metal Ionssupporting

confidence: 86%

Construction of a Luminescent Cadmium-Based Metal–Organic Framework for Highly Selective Discrimination of Ferric Ions

et al. 2021

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Fluorescent metal–organic frameworks (MOFs) are ideal materials for sensors because of their adjustable pore size and functional groups, which provide them with favorable metal ion selective recognition. In this paper, a new cadmium-based MOF was synthesized using Cd(NO3)2·4H2O and 3,3′,5,5′-biphenyltetracarboxylic acid by solvothermal method. CdBPTC owned three types of channels with dimensions of approximately 8.4 × 8.3 Å, 6.0 × 5.2 Å, 9.7 × 8.4 Å along a, b, and c axis, respectively. This MOF has high selectivity to ferric ions and shows excellent anti-inference ability toward many other cations. The results indicate that the fluorescence quenching efficiency of CdBPTC is close to 100% when the concentration of Fe3+ reaches 1.0 × 10−3 mol·L−1. Moreover, the luminescent intensity at 427 nm presents a linear relationship at a concentration range of 2.0 × 10−4~7.0 × 10−4 mol·L−1, which can be quantitatively expressed by the linear Stern–Volmer equation I0/I = 8489 [Fe3+] − 0.1400, which is comparable to the previously reported better-performing materials. Competitive energy absorption and ion exchange may be responsible for the variation in fluorescence intensity of CdBPTC in different Fe3+ concentrations.

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Section: Fluorescence Detection Of Metal Ionssupporting

confidence: 86%

Construction of a Luminescent Cadmium-Based Metal–Organic Framework for Highly Selective Discrimination of Ferric Ions

et al. 2021

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“…To date, there are only two examples of MOFs where zinc SBUs are connected by tritopic organic linkers. [46][47][48] The solventa ccessible volumeo fIPCE-1Ni,c alculated using PLATON, [49] is 32.9 %a nd represented by well-defined1 Do pen channels runninga long the c axis (Figure 1a,S 10). The pore limiting diameter calculated using Voronoi decomposition is 6.52 ,a nd the largestc avity diameter is 8.36 for the empty framework.…”

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confidence: 99%

Highly Proton‐Conductive Zinc Metal‐Organic Framework Based On Nickel(II) Porphyrinylphosphonate

Enakieva

Sinelshchikova

Grigoriev

et al. 2019

Chemistry A European J

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The design of new solid‐state proton‐conducting materials is a great challenge for chemistry and materials science. Herein, a new anionic porphyrinylphosphonate‐based MOF (IPCE‐1Ni), which involves dimethylammonium (DMA) cations for charge compensation, is reported. As a result of its unique structure, IPCE‐1Ni exhibits one of the highest value of the proton conductivity among reported proton‐conducting MOF materials based on porphyrins (1.55×10−3 S cm−1 at 75 °C and 80 % relative humidity).

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“…As shown in Figure d, UiO-66-NH 2 exhibits different levels of fluorescence quenching for different concentrations of Fe 3+ . The results indicate that UiO-66-NH 2 has a wide detection range for Fe 3+ with a detection limit of 10 –8 mol/L, which is better than that of reported MOFs for the detection of Fe 3+ . − It is worth noting that the S–V plot of Fe 3+ is linear when its concentration is less than 10 –5 mol/L, while when the concentration of Fe 3+ was above 10 –5 mol/L, the S–V plot is nonlinear (Figure S10). The reason why there is a linear deviation of a high concentration of Fe 3+ might be due to the fluorescent internal filtration effect …”

Section: Resultsmentioning

confidence: 89%

Rapid and Low-Cost Electrochemical Synthesis of UiO-66-NH₂ with Enhanced Fluorescence Detection Performance

et al. 2019

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Rapid and low-cost synthesis of metal–organic frameworks (MOFs) are very meaningful for their future practical application. In the present study, a Zr-based ultrastable MOF, UiO-66-NH2, was successfully synthesized by electrochemical method using metal Zr as the metal source at room temperature and atmospheric pressure. The effects of the reaction conditions, including the ratio of solvent (electrolyte), the applied voltage and different reaction time, on the crystallinity, morphology, and synthesis rate of the product were fully investigated. The results confirm that electrochemically synthesized UiO-66-NH2 under the optimized condition possesses apparent merits such as high crystallinity, uniform morphology and high porosity. Moreover, the electrochemical synthesis method of UiO-66-NH2 is promising for the large-scale and economical synthesis of nanoscale product to gramme degree. Interestingly, the resulting UiO-66-NH2 synthesized by this electrochemical method exhibits more excellent performance for the fluorescence detection of Fe3+ ions in water (detection limit of 10–8 mol/L) than that of the material prepared by solvothermal method.

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A luminescent metal–organic framework for selective sensing of Fe3+ with excellent recyclability

Cited by 39 publications

References 74 publications

Construction of a Luminescent Cadmium-Based Metal–Organic Framework for Highly Selective Discrimination of Ferric Ions

Construction of a Luminescent Cadmium-Based Metal–Organic Framework for Highly Selective Discrimination of Ferric Ions

Highly Proton‐Conductive Zinc Metal‐Organic Framework Based On Nickel(II) Porphyrinylphosphonate

Rapid and Low-Cost Electrochemical Synthesis of UiO-66-NH₂ with Enhanced Fluorescence Detection Performance

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A luminescent metal–organic framework for selective sensing of Fe3+ with excellent recyclability

Cited by 39 publications

References 74 publications

Construction of a Luminescent Cadmium-Based Metal–Organic Framework for Highly Selective Discrimination of Ferric Ions

Construction of a Luminescent Cadmium-Based Metal–Organic Framework for Highly Selective Discrimination of Ferric Ions

Highly Proton‐Conductive Zinc Metal‐Organic Framework Based On Nickel(II) Porphyrinylphosphonate

Rapid and Low-Cost Electrochemical Synthesis of UiO-66-NH2 with Enhanced Fluorescence Detection Performance

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Rapid and Low-Cost Electrochemical Synthesis of UiO-66-NH₂ with Enhanced Fluorescence Detection Performance