Rational synthesis and dimensionality tuning of MOFs from preorganized heterometallic molecular complexes

Sapianik, Aleksandr A.; Кискин, М. А.; Kovalenko, Konstantin A.; Samsonenko, Denis G.; Dybtsev, Danil N.; Audebrand, Nathalie; Sun, Ya‐Guang; Fedin, Vladimir P.

doi:10.1039/c8dt05136d

Cited by 33 publications

(4 citation statements)

References 56 publications

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“…The sufficient porosity of the coordination frameworks [Ln 2 (phen) 2 (NO 3 ) 2 (chdc) 2 ], coupled with their remarkable luminescence properties, suggest a further investigation of a guest-dependent luminescence for sensing applications. For example, the nitroaromatic organic molecules, being electron-deficient species, often quench the luminescence of the porous MOFs due to efficient charge transfer [ 60 , 61 , 62 , 63 , 64 , 65 , 66 ]. Preliminary experiments with single-metal compounds [Eu 2 (phen) 2 (NO 3 ) 2 (chdc) 2 ]∙2DMF ( 2 ) and [Tb 2 (phen) 2 (NO 3 ) 2 (chdc) 2 ]∙2DMF ( 3 ), wetted by the different liquids indicated modest dependence of the luminescence of 2 and several examples of noticeable quenching of the luminesce in case of 3 .…”

Section: Resultsmentioning

confidence: 99%

Cinnamal Sensing and Luminescence Color Tuning in a Series of Rare-Earth Metal−Organic Frameworks with Trans-1,4-cyclohexanedicarboxylate

et al. 2021

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Three isostructural metal–organic frameworks ([Ln2(phen)2(NO3)2(chdc)2]·2DMF (Ln3+ = Y3+ for 1, Eu3+ for 2 or Tb3+ for 3; phen = 1,10-phenanthroline; H2chdc = trans-1,4-cyclohexanedicarboxylic acid) were synthesized and characterized. The compounds are based on a binuclear block {M2(phen)2(NO3)2(OOCR)4} assembled into a two-dime nsional square-grid network containing tetragonal channels with 26% total solvent-accessible volume. Yttrium (1)-, europium (2)- and terbium (3)-based structures emit in the blue, red and green regions, respectively, representing the basic colors of the standard RGB matrix. A doping of Eu3+ and/or Tb3+ centers into the Y3+-based phase led to mixed-metal compositions with tunable emission color and high quantum yields (QY) up to 84%. The bright luminescence of a suspension of microcrystalline 3 in DMF (QY = 78%) is effectively quenched by diluted cinnamaldehyde (cinnamal) solutions at millimolar concentrations, suggesting a convenient and analytically viable sensing method for this important chemical.

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Section: Resultsmentioning

confidence: 99%

Cinnamal Sensing and Luminescence Color Tuning in a Series of Rare-Earth Metal−Organic Frameworks with Trans-1,4-cyclohexanedicarboxylate

et al. 2021

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“…S12). The high separation of CO 2 is mainly attributed to the Ba(II) ions as well as the abundant uncoordinated N atoms trapped in the porous surface of the channels, making the highly polar host framework and the guest CO 2 molecules to be interlocked firmly as well as simultaneously to enhance the electrostatic interactions of the porous surface and CO 2 species [24][25][26][27][28][29][30].…”

Section: Gas Adsorption Behaviorsmentioning

confidence: 99%

Two comparable Ba-MOFs with similar linkers for enhanced CO2 capture and separation by introducing N-rich groups

et al. 2020

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Two new different metal-organic frameworks (MOFs) [Ba(L1)(H 2 O) 2 ] n ÁnH 2 O (MOF 1) and [Ba(L2)(-H 2 O) 2 ] n Á0.5nDMFÁ0.5nH 2 O (MOF 2) were yielded by the assembly of oxygen-friendly Ba(II) ions and two similar linkers, namely 2-(imidazol-1-yl)terephthalic acid (H 2 L1) and 2Single-crystal X-ray diffractions (XRD) indicate that MOF 1 is a new three-dimensional (3D) stacking dense network formed by the one-dimensional (1D) rod-shaped chains and L1 linkers, whereas MOF 2 presents a 3D nanotube porous framework with cylindrical tunnels based on the 1D loop chains as the secondary building units (SBUs) by replacing the imidazole group in H 2 L1 with the triazole group in H 2 L2. As a result, MOF 2 has a higher density of active sites and Lewis acid sites in the porous surface of nanotube than MOF 1. Thereby, the CO 2 capture and separation capacity of MOF 2 is great higher than that of CH 4 at 298 K.

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“…Optoelectronics device light-emitting material research has never stopped intensifying and the recently found hybrid organic-inorganic materials have caused a tremendous change in this field [1,2]. The ability of luminous nanoparticles to work as a non-invasive sensing device-for example, highly sensitive sensors of pollutants, volatile organic compounds, pH, pressure, or temperature-has attracted a lot of interest among these applications [3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Stimuli-responsive photoluminescent and structural properties of MIL-53(Al) MOF for sensing applications

Rehman,

Agnello,

Gelardi

et al. 2024

J. Phys.: Condens. Matter

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Metal–organic frameworks (MOFs) are an intriguing group of porous materials due to their potential influence on the development of indispensable technologies like luminescent sensors and solid-state light devices, luminescent multifunctional nanomaterials. In this research work we explored MIL-53(Al), an exceptional class of MOF that, along with guest adsorption, undergoes structural transitions exhibiting breathing behavior between narrow pore (NP) and large pore (LP) under temperature and mechanical stress. Therefore, we opted for the time resolved luminescence and FT-Raman spectroscopy to investigate the mechanochromic and thermochromic response of this material under external stimuli. Intriguingly, when subjected to temperature changes, MIL-53(Al) exhibited a ratiometric fluorescence behavior related to the reversible relationship of photoluminescence (PL) emission intensity with respect to temperature. Moreover, under higher mechanical stress MIL-53(Al) displayed turn-on behavior in emission intensity, hence offering a thrilling avenue for the application in mechanically deformed-based luminescent sensors and ratiometric fluorescence temperature sensors.

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Rational synthesis and dimensionality tuning of MOFs from preorganized heterometallic molecular complexes

Abstract: Rational synthesis of heterometallic MOFs was carried out by the judicious choice of pivalate complexes and a tricarboxylate linker defining their dimensionality.

Cited by 33 publications

References 56 publications

Cinnamal Sensing and Luminescence Color Tuning in a Series of Rare-Earth Metal−Organic Frameworks with Trans-1,4-cyclohexanedicarboxylate

Cinnamal Sensing and Luminescence Color Tuning in a Series of Rare-Earth Metal−Organic Frameworks with Trans-1,4-cyclohexanedicarboxylate

Two comparable Ba-MOFs with similar linkers for enhanced CO2 capture and separation by introducing N-rich groups

Stimuli-responsive photoluminescent and structural properties of MIL-53(Al) MOF for sensing applications

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