Syntheses, structures, photoluminescent and magnetic properties of pyrazine-2,3-dicarboxylate-based cadmium-lanthanide/lanthanide coordination polymers tuned by CdII

Zhang, Ju‐Wen; Man, Yi; Ren, Yu-Ning; Liu, Wenhua; Liu, Bin-Qiu; Dong, Yanhong

doi:10.1016/j.ica.2019.01.004

Cited by 11 publications

(3 citation statements)

References 51 publications

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“…The typical excitation peaks of 12 in Figure are attributed to the 6 H 15/2 → 6 P 3/2 (327 nm), 6 H 15/2 → 4 I 11/2 / 4 M 15/2 (353 nm), 6 P 7/2 / 6 H 15/2 → 4 P 3/2 / 6 P 3/2 / 6 P 5/2 (367 nm), and 6 H 15/2 → 4 M 21/2 / 4 I 13/2 / 4 F 7/2 (386 nm) transitions of Dy III , respectively. Excited at 370 nm, CP 12 displays the characteristic emissions of the Dy III ion at 490, 543, 575, and 622 nm [ 4 F 9/2 → 6 H n/2 (n = 15, 14, 13, and 12)], respectively (Figure ) . The emission lifetime of 12 was obtained by fitting the decay curve using a bi‐exponential function, and the lifetime values are 1.13 and 17.73 µs (Figure S16).…”

Section: Resultsmentioning

confidence: 99%

Two Series of Substituent‐Group‐Directed Adipate‐Based Lanthanide Coordination Polymers: Syntheses, Structures, Photoluminescence, and Magnetism

Zhang

Liu

et al. 2020

Eur J Inorg Chem

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Two series of lanthanide‐organic coordination polymers (CPs) [Ln2(L1)3(H2O)4] [Ln = Nd (1), Sm (2), Eu (3), Gd (4), Tb (5), and Dy (6), H2L1 = 3‐methyl‐adipic acid] and [Ln4(L2)6(H2O)4] [Ln = Nd (7), Sm (8), Eu (9), Gd (10), Tb (11), and Dy (12), H2L2 = 3‐tert‐butyl‐adipic acid] have been synthesized by the solvothermal reactions of lanthanide salts with two types of flexible substituent adipates. All of these CPs were characterized by single‐crystal X‐ray diffraction, elemental analysis, IR spectroscopy, powder X‐ray diffraction, and thermal analysis. Structural analyses reveal that CPs 1–6 and 7–12 are isostructural, respectively. CPs 1–6 show a two‐dimensional (2D) layer constructed from the 3‐methyl‐adipate anions bridging two types of binuclear Ln2 units. The adjacent 2D layers are further extended into a three‐dimensional (3D) supramolecular framework through the hydrogen‐bonding interactions. CPs 7–12 also exhibit a 2D structure. The carboxyl groups of 3‐tert‐butyl‐adipate link four types of TbIII ions to form a one‐dimensional (1D) inorganic TbIII chain. The neighboring 1D inorganic TbIII chains are further connected by the 3‐tert‐butyl‐adipate anions to construct a 2D network. The effect of substituent groups on the formation of adipate‐based lanthanide CPs as well as the photoluminescence and magnetic properties of 1–12 were investigated in detail.

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Section: Resultsmentioning

confidence: 99%

Two Series of Substituent‐Group‐Directed Adipate‐Based Lanthanide Coordination Polymers: Syntheses, Structures, Photoluminescence, and Magnetism

Zhang

Liu

et al. 2020

Eur J Inorg Chem

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“…Some lanthanide(III) and transition-metal ion complexes of 2,3-pzdc in the presence of other auxiliary ligands are summarized in Table S1 (see Supporting Information (SI)). − …”

Section: Introductionmentioning

confidence: 99%

Effect of Hydrogen Bonding on the Luminescence Lifetime and Device Resistance: A Case Study Based on Two New Related Cd-Based Coordination Polymers

Manna

Chandra

Patel

et al. 2022

Crystal Growth & Design

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Two new coordination polymers of formulas [Cd2(2,3-pzdc)(tz)2] (1) and [Cd2(2,3-pzdc)(dtz)2] (2) {2,3-pzdc = 2,3-pyrazine dicarboxylate, tz = 1,2,4-triazolate, dtz = 3,5-diamino-1,2,4-triazolate)} were synthesized via hydrothermal techniques. Both the compounds were characterized by single-crystal X-ray analysis, powder X-ray diffraction, Fourier transform infrared (FTIR), and thermogravimetric analysis (TGA). Single-crystal X-ray analysis shows that both the structures are three-dimensional in nature and connectivity-wise they are similar to each other. In compound 2, the presence of N–H···O hydrogen-bond interactions further stabilized the structure. Aqueous dispersion of both the compounds showed a strong dual emissionone at around 353 nm and another at 369 nm upon excitation at 280 nm. Lifetime studies from time-resolved spectra show 0.82 and 0.60 ns for compound 1 and 2.02 and 1.78 ns for compound 2. The higher lifetimes of the excited states in the case of compound 2 establish the role of hydrogen-bond interactions in reducing the nonradiative decay processes. To explore the junction properties at the Al/material interface of these Schottky barrier diodes, the dark J–V characteristics of both of the devices (ITO/PEDOT/compound 1/Al and ITO/PEDOT/compound 2/Al) were analyzed using the well-known Shockley diode equation. In both the devices (with compound 1 and compound 2), asymmetric behavior is observed under forward and reverse bias, indicating rectification. However, in the compound 2 device, the overall current magnitude is 10 times higher than that of the compound 1 device. The series resistance extracted for the compound 2 device is ≈ 22 times lower than that of the compound 1 device, indicating the higher conductivity of compound 2. This behavior indicates a probable role of hydrogen-bond interactions in the lower resistance and higher conductivity of compound 2 compared to compound 1.

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“…1A), which contains two neighboring carboxyl groups and two nitrogen atoms in the ring, is an important bridging ligand candidate for the design of CPs [20,21]. H2pzdc has six donor atoms with four oxygen atoms and two nitrogen atoms in its structure and can form different polymeric complexes with various structural properties [22,23]. H2pzdc can coordinate with metal ions through the oxygen atoms of the carboxyl groups and the nitrogen atoms of the pyrazine ring [24].…”

Section: Introductionmentioning

confidence: 99%

Cu(II) and Cd(II) coordination polymers derived from pyrazine-2,3-dicarboxylato and 1-vinylimidazole ligands: Synthesis, characterization and hydrogen storage capacities

Gördük

Yilmaz

Andaç

2019

Maced. J. Chem. Chem. Eng.

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In this study, two new coordination polymers of Cu(II) and Cd(II) ions with pyrazine-2,3-dicarboxylic acid and 1-vinylimidazole were synthesized. The structures of these coordination polymers were characterized with elemental analysis, infrared spectroscopy, thermal analysis, powder X-ray diffraction, and magnetic susceptibility techniques. According to the results of the thermal analysis, the coordination polymers that contained water molecules decomposed below 100 °C, and the final products for both coordination polymers were the related metal oxides in an oxygen atmosphere. Powder X-ray diffraction analysis revealed that the coordination polymers were in the crystalline form. The hydrogen storage capacities and surface areas of the coordination polymers were also determined. The highest hydrogen storage capacities were measured as 296 ml/g for the Cu(II) coordination polymer and 330 ml/g for the Cd(II) coordination polymer at approximately 75 bar and 75 K.

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Syntheses, structures, photoluminescent and magnetic properties of pyrazine-2,3-dicarboxylate-based cadmium-lanthanide/lanthanide coordination polymers tuned by CdII

Cited by 11 publications

References 51 publications

Two Series of Substituent‐Group‐Directed Adipate‐Based Lanthanide Coordination Polymers: Syntheses, Structures, Photoluminescence, and Magnetism

Two Series of Substituent‐Group‐Directed Adipate‐Based Lanthanide Coordination Polymers: Syntheses, Structures, Photoluminescence, and Magnetism

Effect of Hydrogen Bonding on the Luminescence Lifetime and Device Resistance: A Case Study Based on Two New Related Cd-Based Coordination Polymers

Cu(II) and Cd(II) coordination polymers derived from pyrazine-2,3-dicarboxylato and 1-vinylimidazole ligands: Synthesis, characterization and hydrogen storage capacities

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