Indirekter Nachweis von Assoziaten solubilisierter, polycyclischer, aromatischer Kohlenwasserstoffe in wäßrigen Seifenlösungen durch Lichtabsorption und Fluoreszen / Indirect Evidence for Molecular Association of Polycyclic Aromatic Hydrocarbons in Aqueous Soap Solutions from Light Absorption and Fluorescence

Aqueous solutions of alkyl sulphates containing small amounts of the free alkanol differ in their dissolving properties for polycyclic aromatic hydrocarbons from aqueous solutions of the pure soap in concentrations near the CMC. The differences are observed only near the CMC of the pure soap, where the soap solutions containing free alkanol have a minimum of the surface tension. The observed alterations are deviations from the Lambert-Beer law, energy transfer, and changes of the fluorescence quantum efficiencies, when the soap concentration is varied. The different results are consistent with the assumption that microcristalline molecular van der Waals associations are brought into solution by the soap solutions which were studied.

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Investigation of Extraction and Collection of Polycyclic Aromatic Hydrocarbons from Aqueous Solutions at Different Temperatures

Polycyclic Aromatic Compounds ◽

10.1080/10406638.2017.1353529 ◽

2017 ◽

Vol 40 (1) ◽

pp. 40-49 ◽

Cited By ~ 4

Author(s):

Rejane S. Cargnin ◽

Paulo C. do Nascimento ◽

Luis M. Ferraz ◽

Márcia M. Barichello ◽

Letícia C. Brudi ◽

...

Keyword(s):

Polycyclic Aromatic Hydrocarbons ◽

Aqueous Solutions ◽

Aromatic Hydrocarbons ◽

Different Temperatures ◽

Polycyclic Aromatic

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9,10-Dinaphthylphenanthrene: Synthese, Rotationsisomerie und Photocyclisierung zu polycyclischen aromatischen Kohlenwasserstoffen9,10-Dinaphthylphenanthrenes: Synthesis, Rotational Isomers and Photocyclization to Polycyclic Aromatic Hydrocarbons

Zeitschrift für Naturforschung B ◽

10.1515/znb-1992-1221 ◽

1992 ◽

Vol 47 (12) ◽

pp. 1764-1774 ◽

Cited By ~ 7

Author(s):

Karl-Dietrich Gundermann ◽

Elke Romahn ◽

Maximilian Zander

Keyword(s):

Polycyclic Aromatic Hydrocarbons ◽

Energy Transfer ◽

Nmr Spectroscopy ◽

Aromatic Hydrocarbons ◽

Trans Isomers ◽

Preparative Scale ◽

Rotational Isomers ◽

Polycyclic Aromatic

9,10-Di(1-naphthyl)phenanthrene (5 a) and 9,10-di(2-naphthyl)phenanthrene (5 b) have been synthesized. It is shown that 5 a and 5b both form two stable rotational (cis/trans) isomers with the naphthalene molecular planes perpendicular to the phenanthrene plane. In the case of 5 a the mixture of the two isomers has been separated in a preparative scale and each isomer characterized by e. g., NMR spectroscopy. Photocyclization of 5a leads to benzo[e]phenanthro[1,2,3,4-ghi]perylene (9) while 5 b yields phenanthro[9,10-i]pentahelicene (14); both hydrocarbons have not been previously described in the literature. The observed selectivities of photocyclization are explained on the basis of the structures and stabilities of the initially formed photoproducts (dihydro structures 15 and 14 a). The role of intramolecular non-radiative singlet-singlet energy transfer (naphthalene → phenanthrene) as competing with photocyclization is discussed in detail.

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Room-temperature phosphorescence as an indicator of triplet-triplet energy transfer between dyes and polycyclic aromatic hydrocarbons solubilized in anionic micelles

10.1117/12.380119 ◽

2000 ◽

Cited By ~ 1

Author(s):

G. V. Melnikov ◽

S. Shtykov ◽

I. Goryacheva

Keyword(s):

Polycyclic Aromatic Hydrocarbons ◽

Energy Transfer ◽

Aromatic Hydrocarbons ◽

Room Temperature ◽

Room Temperature Phosphorescence ◽

Triplet Energy ◽

Polycyclic Aromatic ◽

Triplet Energy Transfer ◽

Anionic Micelles

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Luminescent metal–organic frameworks encapsulating polycyclic aromatic hydrocarbons for energy transfer

Dalton Transactions ◽

10.1039/c9dt04047a ◽

2020 ◽

Vol 49 (16) ◽

pp. 5087-5091 ◽

Cited By ~ 1

Author(s):

Han Wu ◽

Mengting Li ◽

Chunyi Sun ◽

Xinlong Wang ◽

Zhongmin Su

Keyword(s):

Polycyclic Aromatic Hydrocarbons ◽

Energy Transfer ◽

Electron Donor ◽

Aromatic Hydrocarbons ◽

Metal Organic Frameworks ◽

Host Matrix ◽

Polycyclic Aromatic ◽

Metal Organic

A novel MOF with a kaleidoscopic topology as an ideal host matrix that exhibits luminescence energy transfer and quenching behaviour in the presence of a photocatalytic sacrificial electron donor.

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