Spectroscopic investigation of fluorescence quenching agents. Part III: Effect of solvent polarity on the selectivity of nitromethane for discriminating between alternate versus nonalternant polycyclic aromatic hydrocarbons

Journal Article · Tue Jun 01 00:00:00 EDT 1993 · Applied Spectroscopy; (United States)

DOI:https://doi.org/10.1366/0003702934066875· OSTI ID:5651069

Tucker, S A; Acree, Jr, W E ^[1]; Fetzer, J C ^[2]; Harvey, R G ^[3]; Tanga, M J ^[4]; Cheng, P C; Scott, L T ^[5]

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1. Univ. of North Texas, Denton (United States)
2. Chevron Research and Technology Center, Richmond, CA (United States)
3. Univ. of Chicago, IL (United States)
4. SRI International, Menlo Park, CA (United States)
5. Univ. of Nevada, Reno (United States)

To better assess the applicability of nitromethane as a selective quenching agent for alternant versus nonalternant polycyclic aromatic hydrocarbons in HPLC, TLC, and HPTLC analysis, the authors measured the effect that it has on the fluorescence emission behavior of 96 different polycyclic aromatic hydrocarbons dissolved in binary toluene/acetonitrile solvent mixtures. Results of these measurements revealed that the [open quotes]selective quenching[close quotes] rule is obeyed for the vast majority of PAHs, with the coronene derivatives being the only major exceptions. Fluorescence emission spectra are also reported for benzo[g]chrysene, naphtho[2,3g]chrysene, 4H-benzo[c]cyclo-penta[mno]chrysene, dibenzo[ghi,mno]fluoranthene (commonly called corannulene), rubicene, diacenaphtho[1,2j:1',2']fluoranthene, 10-methyl-benzo[b]fluoranthene, 3-methoxybenzo[k]fluoranthene, and 3-hydroxy-benzo[k]fluoranthene in organic nonelectrolyte solvents of varying polarity. Calculated emission intensity ratios failed to vary systematically with solvent polarity, and all nine of the aforementioned solutes were thus classified as nonprobe molecules. 63 refs., 4 figs., 2 tabs.

• DOE Contract Number: FG08-88ER13945
• OSTI ID: 5651069
• Journal Information: Applied Spectroscopy; (United States), Vol. 47:6; ISSN 0003-7028
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
POLYCYCLIC AROMATIC HYDROCARBONS
FLUORESCENCE SPECTROSCOPY
CHROMATOGRAPHY
MOLECULAR STRUCTURE
NITROMETHANE
SOLVENT PROPERTIES
SOLVENTS
AROMATICS
CHEMICAL EXPLOSIVES
EMISSION SPECTROSCOPY
EXPLOSIVES
HYDROCARBONS
NITRO COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
SEPARATION PROCESSES
SPECTROSCOPY
400102* - Chemical & Spectral Procedures
400105 - Separation Procedures