Polycyclic Aromatic Hydrocarbons and Polycyclic Aromatic Sulfur Heterocycles: Examination of Molecular Structure- Fluorescence Probe Character Correlations

Authors: Acree, William E.1; Tucker, Sheryl A.1; Cretella, Lisa E.2; Zvaigzne, Anita I.1; Street, Kenneth W.3; Fetzer, John C.4; Nakasuji, Kazuhiro5; Murata, Ichiro6

Source: Applied Spectroscopy, Volume 44, Issue 6, Pages 911-1096 (July 1990) , pp. 951-957(7)

Publisher: Society for Applied Spectroscopy

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Abstract:

Fluorescence emission spectra are reported for 1,6-dithiapyrene, 3,10-dithiaperylene, 1,7-dithiaperylene, thianthrene, benz[4,10]anthra[1,9,8abcd]coronene, and benzo[cd]chryseno [4,5,6,7fghijk] perylene dissolved in several nonelectrolyte solvents of varying polarity. Emission spectra of the four polycyclic aromatic sulfur heterocycles (PASHs) contained very little fine structure. Severe spectral distortion, along with significant band broadening, was often observed in the case of PASHs dissolved in polar solvents. Benz[4,10]anthra[1,9,8abcd]coronene showed some probe-like character as evidenced by selective emission intensity enhancement of band I in dimethyl sulfoxide as compared to n-hexadecane solvent. The ratio of emission intensities for benz[4,10]anthra[1,9,8abcd]coronene, however, failed to vary systematically with solvent polarity. Results of these fluorescence measurements indicate that all six solutes are unsuitable for solvent polarity probes.

Keywords: Fluorescence; Molecular structure

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/0003702904086876

Affiliations: 1: Department of Chemistry, University of North Texas, Denton, Texas 76203-5068, U.S.A. 2: Department of Chemistry, Kent State University, Kent, Ohio 44242, U.S.A. 3: NASA-Lewis Research Center, 21000 Brookpark Road, Cleveland, Ohio 44135, U.S.A. (K.W.S.) 4: Chevron Research Company, Richmond, California 94802-0627, U.S.A. 5: Institute for Molecular Science, Myodaiji, Okazaki 444, Japan 6: Department of Chemistry, Osaka University, Toyonaka, Osaka 560, Japan

Publication date: July 1, 1990

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