Heavy-atom enhancement and analytical figures of merit for low-temperature phosphorimetry in the red region for several polynuclear aromatic hydrocarbons.
Analytical figures of merit for the low-temperature (77 K) phosphorescence of 22 polynuclear aromatic hydrocarbons are presented. Also, heavy-atom enhancement factors have been obtained for these compounds with an n-heptane solvent with iodoethane and dimethylmercury as sources of external heavy atoms, and with a 3:1 v/v ethanol/water solvent with potassium iodide, silver nitrate, thallium acetate, and lead acetate as heavy-atom sources. Effects of these heavy atoms on the phosphorescence signals vary markedly, depending on the compound of interest.
Inman
E L
EL
Department of Chemistry, University of Florida, Gainesville, FL 32611, U.S.A.
Jurgensen
A
A
Winefordner
J D
JD