2085-33-8

Basic information

• Product Name: 8-Hydroxyquinoline aluminum salt
• Synonyms: Tris(8-hydroxyquinoline)aluminum;8-HYDROXYQUINOLINE, ALUMINUM SALT, 99.99 5%;8-Hydroxyquinoline)aluminiumsalt;Tris(8-hydroxyquinoline)aluminiumsalt;Tri-8-quinolinolatoaluminum;TRIS(8-HYDROXY-CHINOLINATO)ALUMINIUM;Aluminumhydroxyquinolinate;8-HYDROXYQUINOLINE, ALUMINUM SALT 98%
• CAS NO: 2085-33-8
• Molecular Formula: C₂₇H₁₈AlN₃O₃
• Molecular Weight: 459.43
• EINECS: 218-227-0
• Product Categories: Al (Alminum) Compounds;Classes of Metal Compounds;Electroluminescence;Functional Materials;Quinolinecarboxylic Acids, etc.;Quinolines;Typical Metal Compounds;Highly Purified Reagents;Other Categories;Refined Products by Sublimation;Light yellow powder;oled materials;fine chemicals, specialty chemicals, intermediates, electronic chemical, organic synthesis, functional materials
• Mol File: 2085-33-8.mol
• Article Data: 20

Chemical Properties

• Melting Point: >300 °C(lit.)
• Boiling Point: 267 °C at 760 mmHg
• Flash Point: 143.1 °C
• Appearance: /
• Density: 1.19 g/cm3
• Vapor Pressure: 0.00508mmHg at 25°C
• Solubility: Solubility in chloroform
• Merck: 14,370
• CAS DataBase Reference: 8-Hydroxyquinoline aluminum salt(CAS DataBase Reference)
• NIST Chemistry Reference: 8-Hydroxyquinoline aluminum salt(2085-33-8)
• EPA Substance Registry System: 8-Hydroxyquinoline aluminum salt(2085-33-8)

Safety Data

• Hazard Codes: Xi
• Statements: 36/37/38
• Safety Statements: 26-36
• WGK Germany: 3
• RTECS: BD2231000
• TSCA: No
• Hazardous Substances Data: 2085-33-8(Hazardous Substances Data)

Usage

Description

Tris(8-hydroxyquinoline)aluminum(III), commonly known as Alq3, is a luminous yellow powder that is widely used in organic light-emitting diodes (OLEDs) as an electron-transport material (ETM) and emitting layer material (ELM) due to its high thermal stability, high quantum yield of fluorescence, and high electron-transport ability. A study reports the new crystalline phase d besides its originally known three other crystalline phases, α, β, γ. It exhibits excellent chemical stability and high luminescence efficiencies.

Uses

Used in OLEDs:
8-Hydroxyquinoline aluminum salt is used as an electron transport and/or light-emitting layer for its high thermal stability, high quantum yield of fluorescence, and high electron-transport ability, which contribute to the efficiency and performance of OLEDs.
Used in OLEDs as a Key Green-Light Emitting Material:
8-Hydroxyquinoline aluminum salt is used as a key green-light emitting and electron transport material for OLEDs, enhancing the color quality and efficiency of the devices.
Used in OLEDs as a Focus of New Electroluminescent Materials Research:
8-Hydroxyquinoline aluminum salt, specifically Alq3, is used as the first efficient low molecular weight OLED reported by Tang in 1987, making it a central focus in the research and development of new electroluminescent materials.

Classification

Organometallic, Electron transport-layer materials (ETL), Electron injection-layer materials (EIL), OLED emitting layer material (ELM).

InChI:InChI=1/3C9H7NO.Al/c3*11-8-5-1-3-7-4-2-6-10-9(7)8;/h3*1-6,11H;

Upstream product

• 148-24-3 8-quinolinol 
• 637-12-7 aluminum stearate 
• 97-93-8 triethylaluminum 
• 7784-27-2 aluminium trinitrate 
• 7446-70-0 aluminium trichloride 
• 555-31-7 aluminum isopropoxide 
• 22537-23-1 aluminium(III) ion 
• 7446-70-0 aluminum (III) chloride 
• 1187-04-8 4-methyl-3,5-heptanedione 
• 75-24-1 trimethylaluminum 
• 24623-77-6 boehmite 

Relevant articles and documents

Investigation of environmental and concentration effects on fluorescence properties of AlQ3 using mesoporous silica and polyacrylate

In this work, for the first time, control over the position of maximum emission peak for fluorophore, using embedded tris(8-hydroxyquinoline) aluminum (AlQ3) complexes into different types of host materials, can be achieved. Moreover, the envir

Understanding M-ligand bonding and: Mer -/ fac -isomerism in tris(8-hydroxyquinolinate) metallic complexes

Tris(8-hydroxyquinolinate) metallic complexes, Mq3, are one of the most important classes of organic semiconductor materials. Herein, the nature of the chemical bond in Mq3 complexes and its implications on their molecular properties were investigated by a combined experimental and computational approach. Various Mq3 complexes, resulting from the alteration of the metal and substitution of the 8-hydroxyquinoline ligand in different positions, were prepared. The mer-/fac-isomerism in Mq3 was explored by FTIR and NMR spectroscopy, evidencing that, irrespective of the substituent, mer- and fac-are the most stable molecular configurations of Al(iii) and In(iii) complexes, respectively. The relative M-ligand bond dissociation energies were evaluated experimentally by electrospray ionization tandem mass spectrometry (ESI-MS-MS), showing a non-monotonous variation along the group (Al > In > Ga). The results reveal a strong covalent character in M-ligand bonding, which allows for through-ligand electron delocalization, and explain the preferred molecular structures of Mq3 complexes as resulting from the interplay between bonding and steric factors. The mer-isomer reduces intraligand repulsions, being preferred for smaller metals, while the fac-isomer is favoured for larger metals where stronger covalent M-ligand bonds can be formed due to more extensive through-ligand conjugation mediated by metal d orbitals.

A theoretical and experimental study on meridional-facial isomerization of tris(quinolin-8-olate)aluminum (Alq3)

The rationale behind the stereospecific synthesis of a facial isomer of tris(quinolin-8-olate)aluminum (Alq3) is studied by density functional theory (DFT) calculations, which predict the favourable influence of an H3O+ ion on the distribution ratio between a meridional and a thermodynamically unstable facial isomer. This journal is the Partner Organisations 2014.