Fluorescence properties of pyrene (Py), benzo[ghi]perylene (BPe), coronene (Co), and ovalene (Ov) dissolved in n-butylammonium thiocyanate, sec-butylammonium thiocyanate, and dipropylammonium thiocyanate are reported. Solvent polarities of the thiocyanate salts are estimated from the fluorescence emission intensity ratios of bands I and III (i.e., Py = I/III) of the polycyclic aromatic hydrocarbon vibronic spectra. Calculated BPe, Co, and Ov values indicate that all three thiocyanate salts are comparable in polarity to cyclohexanone.
Kenneth W. Street, William E. Acree, John C. Fetzer, Prabhakara H. Shetty, and Colin F. Poole, "Polycyclic Aromatic Hydrocarbon Solute Probes. Part V: Fluorescence Spectra of Pyrene, Ovalene, Coronene, and Benzo[ghi]perylene Dissolved in Liquid Alkylammonium Thiocyanate Organic Salts," Appl. Spectrosc. 43, 1149-1153 (1989)
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