19542-05-3

Basic information

• Product Name: 2,5-Bis(4-bromophenyl)-1,3,4-oxadiazole
• Synonyms: 2,5-Bis(4-bromophenyl)-1,3,4-oxadiazole;2,5-Bis(p-bromophenyl)-1,3,4-oxadiazole
• CAS NO: 19542-05-3
• Molecular Formula: C₁₄H₈Br₂N₂O
• Molecular Weight: 380.0341
• Mol File: 19542-05-3.mol
• Article Data: 14

Chemical Properties

• Melting Point: 256.0-257.2 °C
• Boiling Point: 455.6°Cat760mmHg
• Flash Point: 229.3°C
• Appearance: /
• Density: 1.714g/cm³
• Vapor Pressure: 4.68E-08mmHg at 25°C
• Refractive Index: 1.634
• PKA: -5.34±0.37(Predicted)
• CAS DataBase Reference: 2,5-Bis(4-bromophenyl)-1,3,4-oxadiazole(CAS DataBase Reference)
• NIST Chemistry Reference: 2,5-Bis(4-bromophenyl)-1,3,4-oxadiazole(19542-05-3)
• EPA Substance Registry System: 2,5-Bis(4-bromophenyl)-1,3,4-oxadiazole(19542-05-3)

Safety Data

• Hazardous Substances Data: 19542-05-3(Hazardous Substances Data)

Usage

General Description

2,5-Bis(4-bromophenyl)-1,3,4-oxadiazole is a chemical compound with the molecular formula C16H8Br2N2O. It is a type of aromatic compound that consists of an oxadiazole ring, which is a five-membered heterocyclic ring containing two carbon atoms, two nitrogen atoms, and one oxygen atom, linked to two brominated phenyl rings. 2,5-Bis(4-bromophenyl)-1,3,4-oxadiazole is known for its interesting photochemical and fluorescence properties, which makes it useful in applications like organic light emitting diodes (OLEDs) and other electronic devices. Furthermore, its bromine groups also make it a useful intermediate in chemical synthesis.

InChI:InChI=1/C14H8Br2N2O/c15-11-5-1-9(2-6-11)13-17-18-14(19-13)10-3-7-12(16)8-4-10/h1-8H

Upstream product

• 69673-99-0 4-bromo-N’-(4-bromobenzoyl)benzohydrazide 
• 837429-72-8 4-bromo-N-((4-bromophenyl)chloromethylene)benzhydrazonoyl chloride 
• 586-75-4 4-chlorobenzoyl chloride 
• 5933-32-4 4-bromobenzoic acid hydrazide 
• 5798-75-4 Ethyl 4-bromobenzoate 
• 88-65-3 2-bromobenzoic-acid 

Downstream Products

• 1072145-29-9 4',4''-(1,3,4-oxadiazole-2,5-diyl)bis(N,N-diphenylbiphenyl-4-amine) 
• 17452-98-1 2,5-bis(4-bromophenyl)-1,3,4-thiadiazole 
• 1361989-55-0 2,5-bis[4-(dimethylsilyl)phenyl]-1,3,4-oxadiazole 
• 1116122-85-0 2,5-bis[4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolanyl)phenyl]-1,3,4-oxadiazole 
• 817171-72-5 2,5-bis-(4-ethynylphenyl) [1,3,4]oxadiazole 
• 866751-85-1 2,5-bis-[4-(trimethylsilylethynyl)phenyl] [1,3,4]oxadiazole 
• 837429-76-2 C₂₈H₁₈N₂O₃ 
• 55368-85-9 2,5-bis(4-cyanophenyl)-1,3,4-oxadiazole 

Relevant articles and documents

Yellow electrochromic polymer materials with fine tuning electrofluorescences by adjusting steric hindrance of side chains

A series of novel conducting conjugated yellow-to-transmissive electrochromic (EC) polymers were designed and synthesized to research their structure-property relationships, achieving electrofluorescent (EF) switching with applied external potential. These bifunctional materials are based on repeat units of bi-phenyl-1,3,4-oxadiazole and thiophene derivatives with different side chains. The polymers present a similar yellow color and emit various fluorescences with applied reduction potential, and they can turn to nearly transparent and non-fluorescent with oxidization potential. The optical contrast, electrochemical, electrochromic and electrofluorescent switching properties were also characterized in detail. A device containing these polymers was also fabricated that can achieve electrochromic and electrofluorescent switching simultaneously, making these polymers promising candidates for electro-bifunctional materials.

Oxadiazole- and indolocarbazole-based bipolar materials for green and yellow phosphorescent organic light emitting diodes

New bipolar materials, namely 2-phenyl-5-(4-(5-phenylindolo [3,2-a]carbazol-12(5H)-yl)phenyl)-1,3,4-oxadiazole (ICz-OXD) and 2,5-bis(4-(5-phenylindolo [3,2-a]carbazol-12(5H)-yl)phenyl)-1,3,4-oxadiazole (2ICz-OXD), were designed and synthesized. Tree different devices were fabricated using ICz-OXD and 2ICz-OXD as host and fluorescent materials: a green phosphorescent, yellow phosphorescent, and non-doped fluorescent OLED emitter. The yellow phosphorescent OLED device based on the 2ICz-OXD host presented good maximum current, power, and external quantum efficiencies, whose values were 47.55 cd/A, 49.80 lm/W, and 21.54%, respectively. Its efficiencies were better than those of the devices based on ICz-OXD and on the reference material 4,4′-Bis(N-carbazolyl)-1,1′-biphenyl (CBP). The green phosphorescent OLED device with ICz-OXD revealed higher efficiencies than the device based on 2ICz-OXD. The current, power, and external quantum efficiencies based on ICz-OXD were 49.79 cd/A, 52.14 lm/W, and 16.50%, respectively. The non-doped fluorescent devices that used our bipolar materials (ICz-OXD, 2ICz-OXD) exhibited blue emission at 435 and 442 nm.

Soluble bipolar star-shaped molecule as highly stable and efficient blue light emitter

A star-shaped blue small-molecule 1,3,5-tris(5-(4-(3,6-di-tert-butylcarbazol-9-yl)phenyl)-1,3,4-oxadiazol-2-yl)benzene (S-Cz-OXD) with donor-π-acceptor (D-π-A) structure was designed and synthesized by incorporating three (3,6-di-tert-butyl-9H-carbazol-9-

Synthesis method of 2,5-disubstituted-1,3,4-oxadiazole

The invention discloses a synthesis method of a drug intermediate, namely, 2,5-disubstituted-1,3,4-oxadiazole. 2,5-disubstituted-1,3,4-oxadiazole is synthesized with a one-pot method under the photocatalytic action with simple hydrazide compounds as raw materials. 2,5-disubstituted-1,3,4-oxadiazole can be produced through a reaction at the room temperature with a common halogen lamp as a light source, eosinY as a catalyst, potassium carbonate as an additive and ethanol as a solvent. The method has the characteristics that the raw material source is simple, the reaction condition is mild and the like.