Spectroscopic Investigations in Molecularly Organized Solvent Media. Part 4. Effect of Cosurfactant On the Ability of the Cetylpyridinium Cation to Selectively Quench Fluorescence Emission of AlternantVersusNonalternant Polycyclic Aromatic Hydrocarbons
| Autor: | John C. Fetzer, Siddharth Pandey, William E. Acree |
|---|---|
| Rok vydání: | 1999 |
| Předmět: |
chemistry.chemical_classification
Aqueous solution Inorganic chemistry technology industry and agriculture Cationic polymerization Cetylpyridinium macromolecular substances Condensed Matter Physics Cetylpyridinium chloride Electronic Optical and Magnetic Materials Solvent chemistry.chemical_compound Polycyclic compound Hydrocarbon chemistry Bromide Materials Chemistry Physical and Theoretical Chemistry |
| Zdroj: | Physics and Chemistry of Liquids. 37:565-578 |
| ISSN: | 1029-0451 0031-9104 |
| DOI: | 10.1080/00319109908035938 |
| Popis: | Fluorescence behavior is reported for 12 alternant and 15 nonalternant polycyclic aromatic hydrocarbons (PAHs) dissolved in aqueous micellar cetyltrimethylammonium bromide (CTAB) + cetylpyridinium chloride (CPC), Brij-35 + CPC and sodium dodecyl-sulfate (SDS) + CPC mixed surfactant solvent media. the three cosurfactants studied contain a cationic, nonionic and anionic headgroup, respectively. Experimental measurements indicate that the cetylpyridinium cation selectively quenches fluorescence emission of alternant PAHs. Emission intensities of nonalternant PAHs, with a few noted exceptions, remain essentially constant, irrespective of both CPC concentration and cosurfactant headgroup charge. |
| Databáze: | OpenAIRE |
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