Lanthanide Coordination Polymers and Their Ag<sup>+</sup>-Modulated Fluorescence

Liu, Weisheng; Jiao, Tianquan; Li, Yi‐Zhi; Liu, Quanzhong; Tan, Min‐Yu; Wang, Hong; Wang, Liufang

doi:10.1021/ja036635q

Cited by 411 publications

(140 citation statements)

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“…29,30 It is evident that apart from upconversion, the energy transfer can only be observed from a higher or equal energy level of the sensitizer to an acceptor energy level. The influence of activation for microporosity of our materials on the luminescence was also investigated retaining the luminescence after evaporation of the 4,4 0 -bipyridine templates.…”

Section: +mentioning

confidence: 99%

Luminescence tuning of MOFs via ligand to metal and metal to metal energy transfer by co-doping of 2∞[Gd2Cl6(bipy)3]·2bipy with europium and terbium

et al. 2012

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The series of anhydrous lanthanide chlorides LnCl 3 , Ln ¼ Pr-Tb, and 4,4 0 -bipyridine (bipy) constitute (1-8), 0 # x, y # 0.5. The series of MOFs exhibits the opportunity of tuning the emission colour in-between green and red. Depending on the atomic ratio Gd:Eu:Tb, the yellow region was covered for the first time for an oxygen/carboxylate-free MOF system. In addition to a ligand to metal energy transfer (LMET) from the lowest ligand-centered triplet state of 4,4 0 -bipyridine, a metal to metal energy transfer (MMET) between 4f-levels from Tb 3+ to Eu 3+ is as well vital for the emission colour. However, no involvement of Gd 3+ in energy transfers is observed rendering it a suitable host lattice ion and connectivity centre for diluting the other two rare earth ions in the solid state. The materials retain their luminescence during activation of the MOFs for microporosity.

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Section: +mentioning

confidence: 99%

Luminescence tuning of MOFs via ligand to metal and metal to metal energy transfer by co-doping of 2∞[Gd2Cl6(bipy)3]·2bipy with europium and terbium

et al. 2012

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“…Similar with common luminescent materials, the luminescence of MOFs can be influenced by many environmental factors,3, 4 including physical stimulus and chemical stimulus (ions,30, 31, 32, 33 solvents,34, 35, 36 vapors,37 pH,38, 39 gases,1 and so on40, 41, 42, 43, 44, 45). However, unlike other luminescent materials, the intrinsic porosity, large surface area, and strong adsorption affinity of MOFs can effectively enrich guest species.…”

Section: Introductionmentioning

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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“…Copper complexes have medical uses in the treatment of numerous diseases including cancer [17][18] . Synthetic binuclear Ni(II) complexes are imperative to understand the mutual influences of the two metal on the electronic, magnetic and catalytic properties of such bimetallic cores [19][20][21][22][23] . Bimetallic Schiff base metal complexes have better biologically activity than the mononuclear Schiff base metal complexes, due to two biocompatible metal ions in the complexes.…”

Section: Research Articlementioning

confidence: 99%

Synthesis, Characterization and Biological Studies of Homobimetallic Schiff Base Cu(II) and Ni(II) Complexes

2013

Chem Sci Trans

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.4(OAc) (4) respectively. The four new homobimetallic complexes have been characterized by spectral techniques like elemental analysis, NMR, IR, UV Visible absorption, magnetic measurements, thermal, EPR, electrochemical studies and molar conductance. IR spectral data shows that the ligands are bidentate and the binding sites are azomethine nitrogen and free primary amine groups. Molar conductance measurements show that the complexes are electrolytes. EPR values and electronic spectral data suggest that it possesses square planar geometry. The Schiff base ligands and metal complexes were evaluated for antimicrobial activity against gram positive bacteria and gram negative bacteria. The ligands and its metal complexes were found to be biologically active. All the complexes show higher antimicrobial activity than the ligand and streptomycin.

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Lanthanide Coordination Polymers and Their Ag⁺-Modulated Fluorescence

Abstract: Four 3-D coordination polymers of lanthanide with a tetra(amino acid) ligand, 1,4,8,11-tetraazacyclotetradecane-1,4,8,11-tetrapropionic acid (H4L, 1), were synthesized. The structure of the Gd(III) complex was characterized. The fluorescence of the Eu(III) complex can be modulated by Ag+.

Cited by 411 publications

References 8 publications

Luminescence tuning of MOFs via ligand to metal and metal to metal energy transfer by co-doping of 2∞[Gd2Cl6(bipy)3]·2bipy with europium and terbium

Luminescence tuning of MOFs via ligand to metal and metal to metal energy transfer by co-doping of 2∞[Gd2Cl6(bipy)3]·2bipy with europium and terbium

Photoluminescent Metal–Organic Frameworks for Gas Sensing

Synthesis, Characterization and Biological Studies of Homobimetallic Schiff Base Cu(II) and Ni(II) Complexes

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Lanthanide Coordination Polymers and Their Ag+-Modulated Fluorescence

Abstract: Four 3-D coordination polymers of lanthanide with a tetra(amino acid) ligand, 1,4,8,11-tetraazacyclotetradecane-1,4,8,11-tetrapropionic acid (H4L, 1), were synthesized. The structure of the Gd(III) complex was characterized. The fluorescence of the Eu(III) complex can be modulated by Ag+.

Cited by 411 publications

References 8 publications

Luminescence tuning of MOFs via ligand to metal and metal to metal energy transfer by co-doping of 2∞[Gd2Cl6(bipy)3]·2bipy with europium and terbium

Luminescence tuning of MOFs via ligand to metal and metal to metal energy transfer by co-doping of 2∞[Gd2Cl6(bipy)3]·2bipy with europium and terbium

Photoluminescent Metal–Organic Frameworks for Gas Sensing

Synthesis, Characterization and Biological Studies of Homobimetallic Schiff Base Cu(II) and Ni(II) Complexes

Contact Info

Product

Resources

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Lanthanide Coordination Polymers and Their Ag⁺-Modulated Fluorescence