293757-13-8

Basic information

• Product Name: 9H-Fluoren-9-one, 2,7-bis[(4-methoxyphenyl)ethynyl]-
• CAS NO: 293757-13-8
• Molecular Formula: C31H20O3
• Molecular Weight: 440.498
• Mol File: 293757-13-8.mol
• Article Data: 2

Chemical Properties

• CAS DataBase Reference: 9H-Fluoren-9-one, 2,7-bis[(4-methoxyphenyl)ethynyl]-(CAS DataBase Reference)
• NIST Chemistry Reference: 9H-Fluoren-9-one, 2,7-bis[(4-methoxyphenyl)ethynyl]-(293757-13-8)
• EPA Substance Registry System: 9H-Fluoren-9-one, 2,7-bis[(4-methoxyphenyl)ethynyl]-(293757-13-8)

Safety Data

• Hazardous Substances Data: 293757-13-8(Hazardous Substances Data)

Upstream product

• 14348-75-5 2,7-dibromofluorene-9-one 
• 768-60-5 4-methoxyphenylacetylen 
• 100-06-1 1-(4-methoxyphenyl)ethanone 
• 486-25-9 9-fluorenone 
• 16218-30-7 2,7-diiodofluoren-9-one 

Downstream Products

• 293757-17-2 2,7-bis[2-(4-methoxyphenyl)ethyl]-9H-fluoren-9-one 
• 293757-23-0 9,9'-(1,4-phenylene)bis[2,7-bis[2-(4-methoxyphenyl)ethyl]-9H-fluoren-9-ol] 

Relevant articles and documents

Synthesis and two-photon absorption spectrum of fluorenone-based molecules

The two-photon absorption (2PA) of five symmetrical fluorenone-based molecules is studied by femtosecond wavelength-tunable Z-scan, as well as quantum-chemical calculations. The molecules are transparent for wavelengths greater than 500?nm and two main one-photon absorption bands are observed in the blue region; one weak, centered at 450?nm, and a stronger one at approximately 360?nm. We observed a strong 2PA band located around 720?nm with maxima 2PA cross-sections between 100 and 230?GM. Quantum chemical calculations employing the response function formalism were performed at the Density Function Theory level to support the interpretation of the experimental nonlinear spectra.