Benzophenone fluorescence properties

Spectroscopic Properties. The phosphorescence quantum yields of the initiators at 77 K in 2-propanol are compared in Table IV. These were obtained upon excitation at the absorption maximum of 290 nm for all the compounds. Both the absorption and phosphorescence spectra of the initiators were similar to those of benzophenone. The quantum yields on the otherhand were variable. The phosphorescence emission spectra of all the compounds had maxima at 414, 443 and 474 nm respectively. No fluorescence was observed which is typical of aromatic ketones indicating a high rate of intersystem crossing. 

Chem. Descrip. Benzophenone 6 CAS 131-54-4 EINECS/ELINCS 205-027-3 Uses UV stabilizer for polyester film and rubber, PU coatings, furniture stains and varnishes, nitrocellulose lacquers, fluorescent pigments, photographic emulsions, dyed polyester fabrics, and acrylic adhesives Properties Pale yel. powd. insol. in water sol. < 1% In methanol, 5% in ethyl acetate, 5% in MEK, and 5% in toluene mass dens. 1.34 g/cm m.p. 130-132 C Maxgard 400 [Lycus Ltd]... 

Matsui K., Momose F. Luminescence properties of tris(2,2 -bipyridine)ruthenium(II) in sol-gel systems of Si02. Chem. Mater. 1997 9 2588-2591 Matsui K., Nozawa K. Molecular probing for the microenvironment ofphotonics materials prepared by the sol-gel process. Bull. Chem. Soc. Jpn. 1997 70 2331-2335 Matsui K., Yamamoto T., Goto T., Nozawa K., Bessho K. Fluorescence and infrared spectra of phenyl-modified silica gels prepared by the sol-gel process. J. Chem. Soc. Jpn. 1998 489-494 Matsui K., Nozawa K., Yoshida T. Phosphorescence of benzophenone in sol-gel silica. Bull. Chem. Soc. Jpn. 1999 72 591-596... 

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