The Inertial Effect in Rotational Fluorescence Depolarization

نویسندگان

  • A. Kawski
  • P. Bojarski
  • A. Kubicki
چکیده

The influence of the moment of inertia on the rotational fluorescence depolarization is discussed. Based on experimental results obtained for five luminescent compounds: 2,5-diphenyloxazole (PPO), 2,2'-p-phenylene-bis(5-phenyloxazole) (POPOP) , p-bis[2-(5-a-naphthyloxazolyl)]-benzene (a-NOPON), 4-dimethylamino-a)-methylsulphonyl-trans-styrene (3 a) in n-parafines at low viscosity (from 0.22 x 10" 3 Pa • s to 0.993 x 10"* Pa • s) and diphenylenestilbene (DPS) in different solvents, a semi-empirical equation is proposed, yielding moments of inertia that are only two to five times higher than those estimated from the molecular geometry.

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تاریخ انتشار 2012