Fluorescence emission spectra are reported for 1-methylcoronene, 1,2-dimethylcoronene, 1,4-dimethylcoronene, 1,6-dimethylcoronene, 2,3-dimethylcoronene, and 2,5-dimethylcoronene dissolved in organic nonelectrolyte solvents of varying polarity. Four of the five coronene derivatives were
found to exhibit probe character, as evidenced by a systematic variation in emission intensity ratio with solvent poplarity. Mathematical expressions which correlate measured intensity ratios and solvent polarity probe behavior of 1-methylcoronene and 1,2-dimethylcoronene with pyrene in 46
solvents of varying polarity are reported. Also reported is the preferential solvation behavior of both solutes in binary mixtures of n-heptane + tetrahydrofuran and n-heptane + 1,4-dioxane.
Department of Chemistry, University of North Texas, Denton, Texas 76203-5068 2:
Chevron Research and Technology Center, Richmond, California 94802-0627
Publication date: January 1, 1995
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