A novel 2D zinc metal–organic framework: Synthesis, structural characterization and vibrational spectroscopic studies

Geranmayeh, Shokoofeh; Abbasi, Alireza; Skripkin, M. Yu.; Badiei, Alireza

doi:10.1016/j.poly.2012.07.013

Cited by 24 publications

(7 citation statements)

References 37 publications

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“…That results in values rather similar to those obtained for other benzenedicarboxylic acids (e.g., terephthalic acid and its derivatives [19,20,[23][24][25]). We have only re-assigned an intense band at 832 cm −1 to totally symmetric ring-breathing vibrations instead of OH out-of-plane mode-breathing mode should be the strongest one in Raman spectra.…”

Section: Vibrational Spectroscopysupporting

confidence: 85%

“…Weak bands at 1250-1270 cm −1 were assigned to C-O stretchings (1263 and 1280 cm −1 in neat acid); a lower frequency compared to acid can result both from the decrease in bond strength and also from the mass difference between hydrogen and copper atoms bonded with the C-O group. The comparison of these data with those for metal ion complexes with terephthalate ligands studied earlier [24,25] shows far less splitting of carboxylate group vibrational frequencies in o-phthalate complexes because of non-centrosymmetric position of CO 2 groups.…”

Section: Vibrational Spectroscopymentioning

confidence: 76%

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Structures, Bonding and Sensor Properties of Some Alkaline o-Phthalatocuprates

et al. 2021

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Comprehensive study of the structure and bonding of disodium, dipotassium and diammonium di-o-phthalatocuprates(II) dihydrates has been undertaken. The crystal structure of ammonium o-phthalatocuprate has been determined. The identity of structures of phthalatocuprate chains in potassium and ammonium salts has been revealed. Vibrational spectra of all three compounds have been recorded, and the assignment of vibrational bands has been made. Force field calculations have shown a minor effect of outer-sphere cations (Na+, K+, NH4+) on both intraligand (C-O) and metal–ligand bond strengths. Synthesized compounds have been tested as electrochemical sensors on D-glucose, dopamine and paracetamol. Their sensitivity to analytes varied in the order of Na+ > K+ > NH4+. This effect has been explained by the more pronounced steric hindrance of copper ions in potassium and ammonium salts.

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Section: Vibrational Spectroscopysupporting

confidence: 85%

Section: Vibrational Spectroscopymentioning

confidence: 76%

Structures, Bonding and Sensor Properties of Some Alkaline o-Phthalatocuprates

et al. 2021

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“…The solvent molecules in the as-synthesized crystals were substituted by aromatic molecules with different substituents by immersing the crystals into benzene, toluene, anisole, or nitrobenzene, and excitation and emission spectra of the compounds are displayed in Figure . The excitation spectrum of 2-H features two broad bands with maxima at 320 and 380 nm, and on the basis of literature data, the observed excitation maxima could be assigned to the absorption of terephthalate (320 nm) − and bipyridyl (380 nm) moieties. − Accordingly, the emission spectra were recorded at two different excitation wavelengths. In the case of λ Ex = 380 nm, the activated guest-free sample displays a blue emission with a broad band at λ = 450 nm.…”

Section: Resultsmentioning

confidence: 82%

Rational Synthesis and Investigation of Porous Metal–Organic Framework Materials from a Preorganized Heterometallic Carboxylate Building Block

et al. 2017

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The tetranuclear heterometallic complex [LiZn(piv)(py)] (1, where piv = pivalate and py = pyridine) has been successfully employed as a presynthesized node for the construction of four porous metal-organic frameworks (MOFs) [LiZn(R-bdc)(bpy)]·solv (2-R, R-bdc; R = H, Br, NH, NO) by reaction with 4,4'-bipyridine (bpy) and terephthalate anionic linkers. The [LiZn] node is retained in the products, representing a rare example of the rational step-by-step design of isoreticular MOFs based on complex heterometallic building units. The permanent porosity of the activated frameworks was confirmed by gas adsorption isotherm measurements (N, CO, CH). Three compounds, 2-H, 2-Br, and 2-NH (but not 2-NO), feature extensive hysteresis between the adsorption and desorption curves in the N isotherms at low pressures. The substituents R decorate the inner surface and also control the aperture of the channels, the volume of the micropores, and the overall surface area, thus affecting both the gas uptake and adsorption selectivity. The highest CO absorption at ambient conditions (105 cm·g or 21 wt % at 273 K and 1 bar for 2-NO) is above the average values for microporous MOFs. The photoluminescent properties of the prototypic 2-H as well as the corresponding host-guest compounds with various aromatic molecules (benzene, toluene, anisole, and nitrobenzene) were systematically investigated. We discovered a rather complex pattern in the emission response of this material depending on the wavelength of excitation as well as the nature of the guest molecules. On the basis of the crystal structure of 2-H, a mechanism for these luminescent properties is proposed and discussed.

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“…They explored that the fine tuning of benzimidazole derived ligands can result in geometrical frustration and accordingly lead to varied degrees of magnetic ordering from concurrence of long-range magnetism and spin frustration to dominant spin frustration. More examples have been reported in the literature. − …”

Section: Design Strategiesmentioning

confidence: 97%

Two-Dimensional Metal-Organic Framework Materials: Synthesis, Structures, Properties and Applications

et al. 2021

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Among the recent developments in metal-organic frameworks (MOFs), porous layered coordination polymers (CPs) have garnered attention due to their modular nature and tunable structures. These factors enable a number of properties and applications, including gas and guest sorption, storage and separation of gases and small molecules, catalysis, luminescence, sensing, magnetism, and energy storage and conversion. Among MOFs, two-dimensional (2D) compounds are also known as 2D CPs or 2D MOFs. Since the discovery of graphene in 2004, 2D materials have also been widely studied. Several 2D MOFs are suitable for exfoliation as ultrathin nanosheets similar to graphene and other 2D materials, making these layered structures useful and unique for various technological applications. Furthermore, these layered structures have fascinating topological networks and entanglements. This review provides an overview of different aspects of 2D MOF layered architectures such as topology, interpenetration, structural transformations, properties, and applications.

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A novel 2D zinc metal–organic framework: Synthesis, structural characterization and vibrational spectroscopic studies

Cited by 24 publications

References 37 publications

Structures, Bonding and Sensor Properties of Some Alkaline o-Phthalatocuprates

Structures, Bonding and Sensor Properties of Some Alkaline o-Phthalatocuprates

Rational Synthesis and Investigation of Porous Metal–Organic Framework Materials from a Preorganized Heterometallic Carboxylate Building Block

Two-Dimensional Metal-Organic Framework Materials: Synthesis, Structures, Properties and Applications

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