A novel Ag(I) coordination polymers based on 2-(pyridin-4-yl)-1H-imidazole-4,5-dicarboxylic acid: Syntheses, structures, ferroelectric, dielectric and optical properties

Chen, Lizhuang; Huang, Deng-Deng; Ge, Jia‐Zhen; Wang, Fang‐Ming

doi:10.1016/j.ica.2013.07.013

Cited by 21 publications

(3 citation statements)

References 51 publications

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“…Irrespective of the coordination of solvent molecules to the Ag(I) center, the formation of Ag(I) coordination polymers substantially influences the counteranions. − Therefore, we envision that the polymeric structures and photoluminescent properties of pyridyl-imidazole-based silver(I) complexes would be highly dependent upon simple variations in the silver counteranion. Until now, only three examples of pyridyl-imidazole-based silver(I) complexes have been reported in the literature. ,, …”

Section: Introductionmentioning

confidence: 99%

Role and Effect of Anions in the Construction of Silver Complexes Based on a Pyridylimidazole Ligand with L-Type Coordination Vectors and Their Photoluminescence Properties

Lee

Kang

Cho

et al. 2016

Crystal Growth & Design

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Three anion-dependent Ag(I) coordination complexesspecifically, [Ag 2 (pyim) 2 (NO 3 ) 2 ] (1), {[Ag(pyim) 2 ]• ClO 4 •CH 3 OH•(H 2 O) 1.25 } n (2), and [Ag 4 (pyim) 4 ]•(CF 3 SO 3 ) 4 ( 3)were prepared by the reaction of the corresponding silver salts with a rigid ditopic N-terphenyl-substituted 2-(4-pyridyl)imidazole (pyim) ligand possessing an "L"-type coordination vector. Complex 1, in which the nitrate anion acts as a monodentate terminal ligand, exhibits a discrete cyclic dimer structure, whereas complex 2, incorporating a perchlorate anion with weak coordination ability, displays an anion-free one-dimensional (1D) looped chain structure resulting from the Ag sharing of consecutive cyclic dimers. When using a trifluoromethanesulfonate (triflate) as a counteranion with moderate affinity toward the metal center, the resulting complex 3 exhibits an unusual cyclic tetramer structure. In 3, the triflate anions act as bridges between adjacent cyclic tetramers via the weak interaction with the Ag(I) ions, yielding a parquet-like two-dimensional (2D) framework. All three complexes display violet-blue emission, with maxima ranging from 388 to 396 nm. Furthermore, in solution, complex 2 exhibits a substantial emission enhancement, resulting in an emission intensity nearly 2 orders of magnitude greater than those of both the free ligand and the two other Ag(I) complexes, 1 and 3. Counteranions possessing different abilities to coordinate to Ag(I) play important roles in the structural diversity and photoluminescence properties of 1−3.

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Section: Introductionmentioning

confidence: 99%

Role and Effect of Anions in the Construction of Silver Complexes Based on a Pyridylimidazole Ligand with L-Type Coordination Vectors and Their Photoluminescence Properties

Lee

Kang

Cho

et al. 2016

Crystal Growth & Design

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“…These coordination complexes could have potential applications in molecular based ferromagnets, non-linear optics and ferroelectrics [7][8][9]. A variety of bridging groups have been employed for the synthesis of such coordination complexes.…”

Section: Introductionmentioning

confidence: 99%

A polynuclear and two dinuclear copper(II) Schiff base complexes: Synthesis, characterization, self-assembly, magnetic property and DFT study

et al. 2017

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“…Dielectric constant, dielectric loss factors and conductivity properties of various compounds have been reported by in the literature [8,[34][35][36]. These properties are one of the most common techniques of evaluating solid materials.…”

Section: Introductionmentioning

confidence: 99%

Eu+3-doped chalcone substituted cyclotriphosphazenes: Synthesis, characterizations, thermal and dielectrical properties

Biryan

Demirelli

Koran

et al. 2016

Inorganica Chimica Acta

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A series of new cyclotriphosphazene derivatives (2a-e) were prepared from the reactions of substituted chalcone compounds (1a-e) containing different organic side groups at para position with cyclotriphosphazene (2) bearing dioxybiphenyl. The structures of 2a-e were approved by microanalysis and spectroscopic techniques (MS, FT-IR, 31 P, 1 H, 13 C, and 13 C-APT NMR). The thermal behaviors of compounds 2a-e were investigated by thermogravimetric analysis (TGA). These compounds were found to be stable up to about 300°C. Dielectric properties of 2a-e were measured against temperature (between 25 and 160°C at 1 kHz) and frequency (range from 100 Hz to 5 kHz at 25°C) using means of an impedance analyzer. Among them dielectric properties of methoxy substituted cyclotriphosphazene 2e were found to be higher than other phosphazenes. The compound 2b, which has the lower dielectric property values than other phosphazenes, was selected to determine the influence of Eu +3-doping on the dielectric properties of phosphazenes and doped with Eu +3 at different mole ratios. At the dielectric properties of Eu +3-doped compound 2b (with increasing molar ratios of Eu +3) was observed an excellent increasing according to Eu +3-undoped phosphazene compounds.

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A novel Ag(I) coordination polymers based on 2-(pyridin-4-yl)-1H-imidazole-4,5-dicarboxylic acid: Syntheses, structures, ferroelectric, dielectric and optical properties

Cited by 21 publications

References 51 publications

Role and Effect of Anions in the Construction of Silver Complexes Based on a Pyridylimidazole Ligand with L-Type Coordination Vectors and Their Photoluminescence Properties

Role and Effect of Anions in the Construction of Silver Complexes Based on a Pyridylimidazole Ligand with L-Type Coordination Vectors and Their Photoluminescence Properties

A polynuclear and two dinuclear copper(II) Schiff base complexes: Synthesis, characterization, self-assembly, magnetic property and DFT study

Eu+3-doped chalcone substituted cyclotriphosphazenes: Synthesis, characterizations, thermal and dielectrical properties

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