13978-85-3

Usage

Uses

Used in Electronics Industry:
Bis(8-quinolinolato) zinc is used as an electron transfer layer for organic light-emitting diodes (OLEDs) due to its electroluminescent properties. This application takes advantage of its ability to facilitate the transfer of electrons, which is crucial for the efficient functioning of OLEDs.
Used in Pharmaceutical Industry:
Although not explicitly mentioned in the provided materials, due to its chemical structure and properties, Bis(8-quinolinolato) zinc could potentially be explored for applications in the pharmaceutical industry, such as in the development of new drugs or drug delivery systems, similar to the way gallotannin is used in anticancer applications and drug delivery systems. Further research would be required to confirm its suitability and efficacy in this context.

InChI:InChI=1/2C9H7NO.Zn/c2*11-8-5-1-3-7-4-2-6-10-9(7)8;/h2*1-6,11H;/q;;+2/p-2/rC18H12N2O2Zn/c1-5-13-7-3-11-19-17(13)15(9-1)21-23(19)20-12-4-8-14-6-2-10-16(22-23)18(14)20/h1-12H

Upstream product

• 148-24-3 8-quinolinol 
• 7733-02-0 zinc(II) sulfate 
• 97477-20-8 tetrakis(di(8-hydroxyquinolinato)zinc(II)) 
• 7646-85-7 zinc(II) chloride 
• 5970-45-6 zinc(II) acetate dihydrate 
• 19229-79-9 zinc(II) cation 
• 557-34-6 zinc diacetate 

Relevant academic research and scientific papers

Template-based in situ fabrication and melamine sensing of bis(8-quinolinolato)zinc(II) complex nanorod arrays

Parallel polycrystalline bis(8-quinolinolato)zinc(II) complex nanorod arrays, with diameters in the range of 250-320 nm and length of 25 m, are in situ fabricated by liquid-liquid interfacial precipitation in the pores of porous anodic aluminum oxide membrane. The prepared nanorods show an enhanced photo- luminescence emission compared to submicron particles and can be used as a good melamine probe for easy and highly sensitive detection.

Design, synthesis, and antifungal evaluation of 8-hydroxyquinoline metal complexes against phytopathogenic fungi

Phytopathogenic fungal infections have become a major threat to agricultural production, food security, and human health globally, and novel antifungal agents with simple chemical scaffolds and high efficiency are needed. In this study, we designed and synthesized 38 8-hydroxyquinoline metal complexes and evaluated their antifungal activities. The results showed that most of the tested compounds possessed remarkable in vitro antifungal activity. Especially, compound 1e exhibited the highest antifungal potency among all target compounds, with EC50 values of 0.0940, 0.125, 2.95, and 5.96 μg/mL, respectively, against Sclerotinia sclerotiorum, Botrytis cinerea, Fusarium graminearum, and Magnaporthe oryzae. Preliminary mechanistic studies had shown that compound 1e might cause mycelial abnormalities of S. sclerotiorum, cell membrane permeability changes, leakage of cell contents, and inhibition of sclerotia formation and germination. Moreover, the results of in vivo antifungal activity of compound 1e against S. sclerotiorum showed that 1e possessed higher curative effects than that of the positive control azoxystrobin. Therefore, compound 1e is expected to be a novel leading structure for the development of new antifungal agents.

Adduct formation of zinc oxinate chelate with some nitrogen bases

Visible and u.v. spectra of zinc oxinate chelate in chloroform showed bathochromic shifts on addition of nitrogen bases.These shifts, large compared to those due to solvent effects alone, were attributed to adduct formation.From a quantitative evaluation of the data, the formation constants of what proved to be 1:2 adducts were determined.The stabilities of these adducts were found to increase in the order: neocuproin 2,2'-bipyridyl ethylenediamine = 1,10-phenanthroline.The formation of a very weak adduct in the case of neocuproin is attributed to the sterically hindering methyl groups ortho to nitrogen atoms in the molecule.

Synthesis and OLED properties of zinc complexes based on quinaldic acid

Metal-chelate materials based on polycyclic aromatic ligands are attractive for tuning emission colors of organic light-emitting diodes (OLED). In this work, quinaldic acid (QA) and 8-hydroxyquinoline (HQ) were employed as organic ligands and the corresponding zinc complexes (Zn(HQA), Zn(QA), Zn(HQ)) were synthesized. The structures of Zn(HQA), Zn(QA), and Zn(HQ) were determined by 1H-NMR, 13C-NMR, FT-IR, UV-Vis and XPS. Zinc complexes showed thermal stability up to 350°C under nitrogen flow by TGA. The photoluminescence (PL) was measured from DMSO solution. The Zn(HQA) emitted a yellow light around 550 nm, while Zn(HQ) emitted a green light around 500 nm. Electroluminescence (EL) device having the structure of ITO/NPB/Zn(HQA)/Liq/Al was fabricated. The device emitted a yellow light around 550 nm. The maximum luminance of 190 cd/m2 and current of 50 mA/cm2 were observed at 15 V in the Zn(HQA)-containing device.

Preparation of 8-hydroxyquinoline complexes and application of 8-hydroxyquinoline complexes in prevention and treatment of plant diseases

The invention relates to the technical field of chemical pesticides, and discloses application of any compound of 8-hydroxyquinoline zinc complexes (Ya)-(Yj) in preparation of drugs for preventing orresisting sclerotinia rot of colza, botrytis cinerea, wheat scab and rice blast. Due to the fact that 8-hydroxyquinoline has wide biological activity, the complexes show huge potential in an antifungal aspect, and elemental zinc (Zn) has good bactericidal performance. The 8-hydroxyquinoline zinc complexes organically combine the biological activity of 8-hydroxyquinoline and the biological activity of Zn, and an activity test shows that the complexes show remarkable antibacterial activity can be developed as agricultural bactericides.

Organic light-emitting element and display apparatus

Provided is an organic light-emitting element having high luminous efficiency and a long lifetime. The organic light-emitting element includes a pair of electrodes and an organic compound layer placed between the pair of electrodes, in which the organic compound layer includes an iridium complex having a benzo[f]isoquinoline of a specific structure as a ligand and a metal complex compound of a specific structure.

ZINC CHALCOGENIDES, DOPED ZINC CHALCOGENIDES, AND METHODS OF MAKING

A process of preparing a zinc chalcogenide includes providing a solution of 8-hydroxyquinoline; a zinc precursor; and a reaction solvent; isolating a precipitate from the solution; and calcining the precipitate to form the zinc chalcogenide. Additionally, a polymer composite may include a polymer, bis(8-hydroxyquinolinato)zinc, and elemental sulfur or bis(8-hydroxyquinolinato) z M, wherein M is a metal ion and the value of z is equivalent to the oxidation state of the metal ion.

Surface layer-by-layer chemical deposition reaction for thin film formation of nano-sized metal 8-hydroxyquinolate complexes

The feasibility of a novel and simple layer-by-layer chemical deposition method for the preparation of nano-sized metal 8-hydroxyquinolate complexes has been investigated and reported. Uniform nanocrystalline films have been synthesized via dipping a subs

Metal quinolinolate-fullerene(s) donor-acceptor complexes: Evidence for organic LED molecules acting as electron donors in photoinduced electron-transfer reactions

Tris(quinolinolate)aluminum(III) (AlQ3) is the most widely used molecule in organic light-emitting devices. There exists a strong demand for understanding the photochemical and photophysical events originating from this class of molecules. This paper provides the first report on the electron donor ability of MQn (M = Al or Zn for n = 3 or 2) complexes covalently connected to a well-known electron acceptor, fullerene. To accomplish this, fullerene was functionalized with 8-hydroxyquinoline at different ligand positions and their corresponding zinc(II) and aluminum(III) complexes were formed in situ. The weakly fluorescent metal quinolinolate-fullerene complexes formed a new class of donor-acceptor conjugates. The stoichiometry and structure of the newly formed metal quinolinolate-fullerene complexes were established from various spectroscopic methods including matrix-assisted laser desorption/ionization time-of-flight mass spectrometry and computational density functional theory studies. Electrochemical studies involving free-energy calculations suggested the possibility of photoinduced electron transfer from excited metal-quinolinolate complex to the appended fullerene entity. Femtosecond transient absorption studies confirmed such a claim and analysis of the kinetic data allowed us to establish the different photophysical events in sufficient detail. The novel features of this class of donor-acceptor conjugates include faster charge recombination compared to charge separation and decay of the charge-separated state to populate the low-lying fullerene triplet state in competition with direct charge recombination to the ground state.

The effects of crystal structure on optical absorption/photoluminescence of bis(8-hydroxyquinoline)zinc

In this paper, the transformation processes of two types of bis(8-hydroxyquinoline)zinc: Znq2 dihydrate and anhydrous (Znq 2)4 were investigated by X-ray diffraction (XRD), infrared spectra (IR), scanning electron microscope (SEM), differential scanning calorimetry (DSC) and thermogravimetry (TG). The effects of crystal structure on optical properties of bis(8-hydroxyquinoiline)zinc were analyzed. Znq 2 dihydrate can be transformed into anhydrous (Znq2) 4 during heating under vacuum. Reversal transformation occurs by the interaction between chloroform and (Znq2)4. But (Znq 2)4 was partially transformed into Znq2 dihydrate by the interaction between ethanol and (Znq2)4. The different molecular structure results in different crystal stacking and electronic structure, thereby affect its optical properties.