Synthesis, structure and photoluminescence of (PLAGH)2[ZnCl4] and comparative analysis of photoluminescence properties with tris(2,2′-bipyridine)ruthenium(II)

Radanović, Mirjana M.; Jelić, Miodrag G.; Romčević, N.; Boukos, N.; Vojinović-Ješić, Ljiljana S.; Leovac, Vukadin M.; Hadžić, B.; Bajac, Branimir; Nađ, Laslo F.; Chandrinou, C.; Baloš, Sebastian

doi:10.1016/j.materresbull.2015.06.034

Cited by 9 publications

(8 citation statements)

References 48 publications

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“…The results of the DFT calculations are also confirmed by analysis of the structures of previously reported hybrid zinc chloride phosphors because all of them exhibit short H···Cl bonds similar to those of compounds (2,5-DMP)ZnCl 4 [ d (H···Cl) min = 2.28 Å] and (2,5-DMP)ZnBr 4 [ d (H···Br) min = 2.45 Å]. For example, d (H···Cl) min = 2.28 Å has been reported for 2-(1-hydroxy-4,5-dimethyl-1 H -imidazol-2-yl)pyridiniium zinc chloride, d (H···Cl) min = 2.35 Å for pyridoxalaminuguanidinium zinc chloride, and d (H···Br) min = 2.61 Å for 4-aminopyridinium zinc bromide …”

supporting

confidence: 76%

“…For this reason, we investigated hybrid zinc halides to analyze the origin of the luminescence and give new insights into its possible enhancement. Photoluminescence from hybrid zinc halides has previously been reported, but its origin remains under debate. − Thus, Bushuev et al reported the luminescence to originate from intraligand transitions, while Yangui et al reported a luminescence from excitons localized in the organic molecules and self-trapped excitons . The latter assignment of the white emission is similar to those commonly reported in hybrid lead halide perovskites. , Thus, not only are hybrid zinc halides interesting as lead-free white phosphors for SSL applications, but also a better understanding of the mechanism of broad-band emission is important to optimize the white emission of hybrid halides including hybrid perovskites.…”

mentioning

confidence: 65%

“…Photoluminescence from hybrid zinc halides has previously been reported but its origin remains under debate. [3][4][5][6][7][8] Thus, Bushuev et al reported the luminescence to originate from intra-ligands transitions, 5 while Yangui et al reported a luminescence from excitons localized in the organic molecules and self-trapped excitons. 8 The latter assignment of the white emission is similar as the ones commonly reported in hybrid lead halide perovskites.…”

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Hydrogen Bonding and Broad-Band Emission in Hybrid Zinc Halide Phosphors

2020

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In Solid-State Lighting (SSL) applications, hybrid zinc halide phosphors is a promising family as they meet specific criteria such as high color rendering, low-cost and non toxicity. However, contrary to hybrid lead halide phosphors, the quantum efficiencies are low and the origin of this luminescence remains unclear. To unravel this origin and provide new insights on the enhancement of this emission, four hybrid zinc halides have been investigated. These four compounds exhibit similar crystal structures but different photoluminescence properties. We show that the photoemission requires the formation of V k centers which can be promoted by specific hydrogen bonding. We anticipate that the selection of specific environment for the zinc halide units could lead to a promising family of low-cost and environmentally friendly phosphor for SSL.

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confidence: 76%

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confidence: 65%

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confidence: 99%

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Hydrogen Bonding and Broad-Band Emission in Hybrid Zinc Halide Phosphors

2020

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“…In Figure d, emission spectra are ideally obtained and faultlessly recorded at different temperatures, then strong emission peak can be observed at 475 nm belonging to blue light region and the position of peaks does not shift as a function of temperature. Such emission mostly originates from the 4‐methoxybenzylaminum and [ZnCl 4 ] 2− interaction . Interestingly, photoluminescence intensity shows an abruptly step‐like increase/ decrease with the transformation of phases through cooling/heating mode.…”

Section: Resultsmentioning

confidence: 99%

The First Molecule‐Based Blue‐Light Optical‐Dielectric Switching Material in Both Hybrid Bulk Crystal and Flexible Thin Film Forms

Guo

Zhang

et al. 2017

Advanced Optical Materials

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Three Japanese scientists are awarded the 2014 Nobel Prize in Physics for the invention of a new energy‐efficient light source, the blue light‐emitting diode, which has great potential in photoelectric applications. However, exploring excellent blue‐light materials is still a bigger challenge than red/green ones, especially those with optical‐dielectric dual channels of dielectricity and photoluminescence, which are rarely reported and gradually become the main research objects and nodi in the information industry. Herein, the first molecular blue‐light switching material, (4‐methoxybenzylaminum)2ZnCl4 (1) with many advantages, such as light weight, easy, and environment‐friendly processing, controllability, flexibility, and so on, performs optical and dielectric dual switching simultaneously in a single‐molecule integrated module. And the multifunctional switching ON/OFF channels can be manipulated in the bulk crystal or unidirectional film by applying an external thermal signal, which shows a high signal‐to‐noise ratio of 2:1 and a strong fatigue resistance. Besides, the dense film maintains the structural retention characteristic after more than 10 000 times of folding over 90°, which is the mark of its real genius as an ultraflexible blue‐light device. This finding will promote the application of blue‐light materials in optoelectronic devices and open up a new era of molecule‐based blue‐light switchable multifunctional materials.

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“…On the basis of the abovementioned points, it is undoubtedly of high interest to make some further investigations in this field, i.e., to examine the structure and properties of metal complexes with aminoguanidine derivatives. Recently, the photoluminescence of an aminoguanidine Schiff base with pyridoxal and its metal complexes have been thoroughly examined [16][17][18][19]. One of these compounds was used as a new electron-injecting layer for PLED, which led to higher luminous efficiency a reduction in the turn-on voltage, and an increase in the brightness [18].…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Structures, and Photoluminescence of Two Novel Zinc(II) Compounds Containing 2-Acetylpyridine-aminoguanidine

Radanović

Vojinović-Ješić

Jelić³

et al. 2022

Inorganics

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In the reaction of zinc(II) sulfate and the chloride salt of 2-acetylpyridine-aminoguanidine, two types of complex were obtained, i.e., [Zn(H2O)6](H2L)2(SO4)3·3H2O and [Zn(L)H2O(SO4)]·H2O, depending on the presence of LiOAc as the deprotonating agent. The physicochemical, structural, and photoluminescence properties of the complexes were examined. In the first complex, obtained in the absence of LiOAc, the Schiff base had the role of a counter-ion in its doubly protonated form, while in the presence of LiOAc, upon deprotonation, coordination takes place, and thus the Schiff base acts as a tridentate N3 ligand. In the latter complex, the ligand is coordinated through pyridine, azomethine, and the imino nitrogen of the aminoguanidine residue, leading to formation of two fused five-membered chelate rings. Both the examined complexes, as well as the ligand itself, show high photoluminescence.

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Synthesis, structure and photoluminescence of (PLAGH)2[ZnCl4] and comparative analysis of photoluminescence properties with tris(2,2′-bipyridine)ruthenium(II)

Cited by 9 publications

References 48 publications

Hydrogen Bonding and Broad-Band Emission in Hybrid Zinc Halide Phosphors

Hydrogen Bonding and Broad-Band Emission in Hybrid Zinc Halide Phosphors

The First Molecule‐Based Blue‐Light Optical‐Dielectric Switching Material in Both Hybrid Bulk Crystal and Flexible Thin Film Forms

Synthesis, Structures, and Photoluminescence of Two Novel Zinc(II) Compounds Containing 2-Acetylpyridine-aminoguanidine

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