RETRACTED: Water-stable Ln-exclusive metal-organic framework for highly selective sensing of Fe3+ ions

Yin, Xiong; Li, Shixiong; Liao, Beiling

doi:10.1016/j.dyepig.2019.108035

Cited by 29 publications

(7 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The plot in Figure 9 e shows an adequate linear fit with a correlation coefficient (R 2 ) of 0.998 between I Tb / I Eu and the concentration of Fe 3+ in the concentration range of 0–0.24 mM, and the linear equation is I Tb / I Eu = 5.17–1.86C (Fe 3+ ). The limit of detection (LOD) was found to be 0.46 μM, a lower value compared with that previously reported in the literature [ 47 , 48 ]. Figure S5 presents the CIE chromaticity of the Eu/Tb-PMA-MPEG solutions after adding various amounts of Fe 3+ ions under the excitation wavelength of 360 nm.…”

Section: Resultscontrasting

confidence: 62%

Biomineralized Nano-Assemblies of Poly(Ethylene Glycol) Derivative with Lanthanide Ions as Ratiometric Fluorescence Sensors for Detection of Water and Fe3+ Ions

Chen

Zhao

2022

Polymers

View full text Add to dashboard Cite

An effective strategy was developed to fabricate novel lanthanide ions–pyromellitic acid–methoxy poly(ethylene glycol) (Ln-PMA-MPEG) nano-assemblies. The amphiphilic partially esterified derivative (PMA-MPEG) of pyromellitic acid with methoxy poly(ethylene glycol) was designed and synthesized via the coupling reaction. Ln-PMA-MPEG nano-assemblies were rapidly fabricated using PMA-MPEG as a polymer ligand with Eu3+ ions or mixed Eu3+/Tb3+ ions through biomimetic mineralization in neutral aqueous systems. The size of the as-prepared materials could be designed in the range 80–160 nm with a uniform distribution. The materials were readily dispersed in various solvents and displayed visible color variations and different photoluminescent properties for solvent recognition. The mixed Eu/Tb-PMA-MPEG nanomaterials were investigated as ratiometric sensors for the detection of trace water in DMF and Fe3+ ions in aqueous solutions. The sensor materials can quantitatively detect trace water in DMF from 0% to 10% (v/v). The resultant materials also display a strong correlation between the double luminescence intensity ratios (ITb/IEu) and Fe3+ concentration, with a good linear detection concentration in the range of 0–0.24 mM and a limit of detection of 0.46 μM, and other metal ions did not interfere with the sensing mechanism for Fe3+ ions. The novel nano-assemblies have potential applications as ratiometric fluorescent nanosensors in the chemical industry as well as in biomedical fields.

show abstract

Section: Resultscontrasting

confidence: 62%

Biomineralized Nano-Assemblies of Poly(Ethylene Glycol) Derivative with Lanthanide Ions as Ratiometric Fluorescence Sensors for Detection of Water and Fe3+ Ions

Chen

Zhao

2022

Polymers

View full text Add to dashboard Cite

show abstract

“…44 Because of the numerous electron levels of the 4f n electronic structure, the specific emission peaks of the Ln(III) ions mainly locate in the visible to infrared region of the spectra. 45 As shown in Figures S4 and S5, complexes 1-Eu and 1-Tb exhibit their characteristic emission peaks (579, 590, 617, 650, and 696 nm caused by the 5 D 0 → 7 F 2 electron transition for 1-Eu; 491 nm, 544 nm, 586 nm, 621 nm, 649 nm caused by the 5 D 4 → 7 F 5 electron transition for 1-Tb) upon excitation at 268 nm. Similar to other Ln-MOFs, the absence of characteristic emission peaks of ligand in 1-Eu and 1-Tb suggested the effective energy transfer from ligand to Eu 3+ /Tb 3+ .…”

Section: ■ Introductionmentioning

confidence: 86%

Highly pH-Stable Ln-MOFs as Sensitive and Recyclable Multifunctional Materials: Luminescent Probe, Tunable Luminescent, and Photocatalytic Performance

Tan

Jia

et al. 2021

Crystal Growth & Design

View full text Add to dashboard Cite

Reasonably designing highly pH-stable lanthanide metal−organic frameworks (Ln-MOFs) is of great importance for multifunctional applications. Herein, three isostructural Ln-MOFs, namely, {[Ln(tcmb)(H 2 O) 2 ]•2H 2 O} n (1-Ln, where Ln = Eu, Tb, Gd), have been synthesized and characterized. Experiments results showed that 1-Tb displayed high thermal, pH, and luminescence stability, which provided the possibility for its practical application. Because of the excellent luminescence performances of Ln-MOFs, the luminescent sensing and photocatalytic properties were investigated. 1-Tb exhibits high sensitivity, selectivity for sensing Fe 3+ , CrO 4 2− /Cr 2 O 7 2− ions in the presence of other competition ions. In addition, 1-Gd demonstrates the high photocatalytic activity for degrading tetracycline (TC) under visible light, with the degradation efficiency achieving 82% approximately. To prepare multicolor luminescence materials, by adjusting the relative proportion of Eu 3+ and Tb 3+ we constructed bimetallic Ln-MOFs 1-Eu x Tb 1−x with excellent linear color tunability from green to red, suggesting that 1-Eu x Tb 1−x can be the candidates for optical imaging and barcode research.

show abstract

“…It includes low industrial level, insufficient scientific and technological innovation ability, imperfect supporting service system, and large external environmental constraints, which has attracted the attention of many scholars. When Zhou Minliang reflected on the economic development mode of ethnic areas, he first affirmed that the economic development of ethnic areas should be based on the regional foundation, with resource development and industrial upgrading as the main line, but at the same time he also pointed out that there is a “resource-dependent economy and industrial structure optimization and upgrading in ethnic areas.” “Contradiction between sustainable development and resource development, environmental protection” and looking at the existing research on resource-based industries in ethnic areas, we can basically summarize three research lines based on the above two contradictions [ 10 ]. One is the problem of industrial structure in ethnic areas, most of which involve resource-based industries, and the other is the development of resource-based industries and resources in ethnic areas, the relationship between the environment, and the third is the innovation and transformation of resource-based industries in ethnic areas [ 11 ].…”

Section: State Of the Artmentioning

confidence: 99%

Object-Oriented Technology Model of Regional Industrial Economic Innovation Project Management System

Zhang

2022

Computational Intelligence and Neuroscience

View full text Add to dashboard Cite

Managers have a deeper understanding of computer technology, network technology, and communication technology, which is also a necessary condition for the implementation of project management information. It plays an important role in improving the performance of regional resource-based industry and high-tech service industry. By analyzing the current situation of the company’s project management, the project management and management processes are standardized and the management of project quality, progress, contract, and cost through the design system is completed, so that the various resources of the project can be effectively and rationally allocated and utilized. Information communication inside and outside the project is more convenient, smooth, and fast, and more standardized operating procedures can be carried out. This paper also improves the level of local government governance, shapes the cultural connotation of innovation, openness, and cooperation, and strengthens the cultivation and flow of social elements. A series of policy suggestions are put forward in building the capacity system of both sides of industrial integration, thus greatly improving the overall project management level and the company’s decision-making and analysis ability, so as to achieve fine and precise management objectives.

show abstract

RETRACTED: Water-stable Ln-exclusive metal-organic framework for highly selective sensing of Fe3+ ions

Cited by 29 publications

References 40 publications

Biomineralized Nano-Assemblies of Poly(Ethylene Glycol) Derivative with Lanthanide Ions as Ratiometric Fluorescence Sensors for Detection of Water and Fe3+ Ions

Biomineralized Nano-Assemblies of Poly(Ethylene Glycol) Derivative with Lanthanide Ions as Ratiometric Fluorescence Sensors for Detection of Water and Fe3+ Ions

Highly pH-Stable Ln-MOFs as Sensitive and Recyclable Multifunctional Materials: Luminescent Probe, Tunable Luminescent, and Photocatalytic Performance

Object-Oriented Technology Model of Regional Industrial Economic Innovation Project Management System

Contact Info

Product

Resources

About