148-85-6

Basic information

• Product Name: 4',4'''-azobis[[1,1'-biphenyl]-4-carboxylic] acid
• Synonyms: 4',4'''-azobis[[1,1'-biphenyl]-4-carboxylic] acid;4'',4''''''-Azobis-(4-biphenylcarboxylic acid);4,4'-Bis(4-carboxyphenyl)azobenzene;4-[4-[4-(4-carboxyphenyl)phenyl]azophenyl]benzoic acid;4-[4-[4-(4-carboxyphenyl)phenyl]diazenylphenyl]benzoic acid
• CAS NO: 148-85-6
• Molecular Formula: C₂₆H₁₈N₂O₄
• Molecular Weight: 422.4321
• EINECS: 205-727-9
• Mol File: 148-85-6.mol
• Article Data: 1

Chemical Properties

• Boiling Point: 689.4°Cat760mmHg
• Flash Point: 370.8°C
• Appearance: /
• Density: 1.25±0.1 g/cm3 (20 ºC 760 Torr)
• PKA: 3.75±0.10(Predicted)
• CAS DataBase Reference: 4',4'''-azobis[[1,1'-biphenyl]-4-carboxylic] acid(CAS DataBase Reference)
• NIST Chemistry Reference: 4',4'''-azobis[[1,1'-biphenyl]-4-carboxylic] acid(148-85-6)
• EPA Substance Registry System: 4',4'''-azobis[[1,1'-biphenyl]-4-carboxylic] acid(148-85-6)

Safety Data

• Hazardous Substances Data: 148-85-6(Hazardous Substances Data)

Usage

General Description

4',4'''-azobis[[1,1'-biphenyl]-4-carboxylic] acid, also known as ABBC, is a chemical compound commonly used as an initiator for free radical polymerization. It is a red-orange crystalline powder that is soluble in alcohols and insoluble in water. ABBC is thermally decomposed at temperatures above 80°C, releasing nitrogen gas and initiating the polymerization process. It is often used in the production of acrylic resins, polystyrene, and other polymer materials. Additionally, it is also utilized as a photoinitiator in the manufacturing of UV-curable coatings and inks. However, ABBC should be handled with caution, as it may irritate the skin, eyes, and respiratory system, and may also cause allergic reactions in some individuals.

Upstream product

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Relevant articles and documents

Self-assembled multilayers of CdSe nanocrystals and carboxylate-handled phenylene-based molecules: Optical, electrochemical and photoconductive properties

A series of linear phenylene-based molecules, bearing carboxylic acid or carboxylate functionalities at both ends, were reacted with (hexadecylamine/ stearate)-capped CdSe nanocrystals (7.5 nm diameter) dispersed in CHCl 3 to form multilayers on ITO-glass surfaces via layer-by-layer (LBL) alternation. The new multilayered materials were investigated by UV-Vis spectroscopy, cyclic voltammetry, photoelectrochemistry and photoconductivity. The conjugated linkers, with reversible reduction potentials in the range -1.7 to -2.8 V vs. Ag/Ag+, ease charge transport between dots (LUMO at -1.4 V). Photoconduction is dominated by interdot distance and linker characteristics rather than by LUMO energy levels. The logarithm of photoconductivity and linker length are linearly related, as in conduction of molecular wires, and the tunnelling attenuation factor β value is 2.4 nm-1. Comparison of n-type aromatics and p-type oligothiophenes is discussed.