239-60-1

Basic information

• Product Name: 13H-Dibenzo[a,i]fluorene
• Synonyms: 1,3,7,8-Dibenzofluorene;13H-Dibenzo[a,i]fluorene
• CAS NO: 239-60-1
• Molecular Formula: C₂₁H₁₄
• Molecular Weight: 266.35
• Mol File: 239-60-1.mol
• Article Data: 8

Chemical Properties

• Melting Point: 234°C
• Boiling Point: 344.54°C (rough estimate)
• Flash Point: 242.9°C
• Appearance: /
• Density: 1.1340 (estimate)
• Vapor Pressure: 2.93E-09mmHg at 25°C
• Refractive Index: 1.7640 (estimate)
• CAS DataBase Reference: 13H-Dibenzo[a,i]fluorene(CAS DataBase Reference)
• NIST Chemistry Reference: 13H-Dibenzo[a,i]fluorene(239-60-1)
• EPA Substance Registry System: 13H-Dibenzo[a,i]fluorene(239-60-1)

Safety Data

• Hazardous Substances Data: 239-60-1(Hazardous Substances Data)

Usage

Chemical structure

13H-Dibenzo[a,i]fluorene is a polycyclic aromatic hydrocarbon (PAH) compound consisting of three fused benzene rings.

Carcinogenicity

13H-Dibenzo[a,i]fluorene is a highly carcinogenic and mutagenic chemical.

Environmental occurrence

It is found in environmental pollutants such as vehicle exhaust, cigarette smoke, and industrial emissions.

Health effects

Exposure to 13H-Dibenzo[a,i]fluorene has been linked to an increased risk of cancer, particularly lung and skin cancer, as well as adverse effects on reproductive and developmental systems.

Cancer classification

It is classified as a group 2B carcinogen by the International Agency for Research on Cancer (IARC).

Hazard and toxicity

13H-Dibenzo[a,i]fluorene is considered a hazardous and toxic chemical that requires careful handling and disposal to prevent harm to human health and the environment.

InChI:InChI=1/C21H14/c1-2-7-16-13-20-18(11-15(16)6-1)12-17-10-9-14-5-3-4-8-19(14)21(17)20/h1-11,13H,12H2

Upstream product

• 62784-66-1 bis(1-naphthyl)methanol 
• 90-11-9 1-Bromonaphthalene 
• 130799-84-7 13H-5,6-dihydrodibenzo[a,i]fluorene 
• 66-77-3 1-naphthaldehyde 
• 106031-64-5 Hydroxy-di-naphthalen-1-yl-acetic acid ethyl ester 
• 33656-65-4 ethyl 2-(1-naphthyl)-2-oxoacetate 
• 216393-39-4 13H-13-dibenzofluorene 
• 86854-01-5 13H-dibenzo[ai]fluoren-13-one 
• 106031-70-3 13H-Dibenzo[a,i]fluorene-13-carboxylic acid ethyl ester 
• 130800-07-6 1-(naphthalene-1-ylmethyl)-3,4-dihydronaphthalene-2(1H)-one 

Downstream Products

• 86854-01-5 13H-dibenzo[ai]fluoren-13-one 
• 7464-65-5 11-phenyl-11H-naphtho[a]fluorene 
• 607-50-1 1,1'-dinaphthylmethane 
• 53223-75-9 12H-dibenzo[b,h]fluoren-12-one 
• 4599-94-4 13H-dibenzo[a,h]fluoren-13-one 

Relevant articles and documents

Design and synthesis of new stable fluorenyl-based radicals

Organic neutral radicals have long fascinated chemists with a fundamental understanding of structure-reactivity relationships in organic reactions and with applications as new functional materials. However, the elusive nature of these radicals makes the synthesis, isolation, and characterization very challenging. In this work, the synthesis of three long-lived, fluorenyl-based radicals are reported. The geometry and electronic structures of these radicals were systematically investigated with a combination of various experimental methods, besides density functional theory (DFT) calculations, which include X-ray crystallographic analysis, electron spin resonance (ESR), electron nuclear double resonance (ENDOR), cyclic voltammetry, and UV-vis-NIR measurements. Their half-life periods (τ1/2) in air-saturated solution under ambient conditions were also determined. Surprisingly, all three radicals showed remarkable stabilities: τ1/2 = 7, 3.5, and 43 days.

13H-Dibenzo[a,i]fluoren-13-one

Molecules of 13H-dibenzo[a,i]fluoren-13-one, C21H12O, straddle a crystallographic mirror plane and are essentially planar, with a dihedral angle of only 1.9 (1)° between the two naphthalene ring systems. Repulsive intramolecular C=O...H interactions therefore do not explain the larger distortions found in isomeric ketones.

AMINODIBENZOFLUORENE DERIVATIVE AND ORGANIC ELECTROLUMINESCENCE DEVICE USING THE SAME

A novel compound which is useful as a constitutional component for an organic EL device is provided by an aminodibenzofluorene derivative comprising (A) at least one dibenzofluorene structure and (B) at least one amino group in a molecule, a material for an organic electroluminescence (EL) device comprising the same, a light emitting material for an organic EL device, a light emitting organic solution, an organic EL device in which an organic compound layer comprising a single layer or plural layers including at least a light emitting layer is interposed between a pair of electrodes, wherein at leas one layer in the organic compound layer described above contains at least one kind of the aminodibenzofluorene derivative described above and an equipment comprising the same. A practical organic EL device which has a low operating voltage, a long lifetime and a high current efficiency and which provides blue light emission having an excellent color purity is materialized by using the above compound.