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Spectroscopic Properties of Polycyclic Aromatic Compounds. Part III: Fluorescence Emission and Quenching Behavior of Periodic Table Group 16 Hetero-Atom Derivatives

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Fluorescence emission spectra are reported for benzo[b]naphtho[2,3d]furan, dinaphtho[1,2b:1',2'd]furan, dinaphtho[2,1b:1',2'd]furan, dibenzo[2,3:10,11]perylo[1,12bcd[furan, dibenzo[2,3:10,11]perylo[1,12bcd]thiophene, naphtho[1,8bc:5,4b'c']dipyran (also called 1,6-dioxapyrene), and naphtho[1,8bc:5,4b'c']dipyran (also called 1,6-dioxapyrene) in organic nonelectrolyte solvents of varying polarity. Results of these measurements indicate that dinaphtho[1,2b:1',2'd]furan exhibits slight signs of probe character as evidenced by changing emission intensity ratios; however, the dynamic range was much too small to classify this molecule as a polycyclic aromatic compound probe. The effect of nitromethane and 1,2,4-trimethoxybenzene as selective quenching agents was also examined. Nitromethane was found to quench fluorescence emission of all the aforementioned compounds except benzo-[b]naphtho[2,3d]furan.

Keywords: Fluorescence; Spectroscopic techniques

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/0003702934066622

Affiliations: 1: Department of Chemistry, University of North Texas, Denton, Texas 76203-5068, U.S.A. 2: Rütgerswerke AG, Kekulestrasse 30, D-4620 Castrop-Rauxel, Germany 3: URA CNRS 1387, Section de Biologle, Institut Curie, F75231, Paris Cedex 05, France

Publication date: March 1, 1993

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