Increased Coupling Size in J-Aggregates through N-n-Alkyl Betaine Surfactants
| Autor: | U. De Rossi, Siegfried Daehne, M. Lindrum |
|---|---|
| Rok vydání: | 1996 |
| Předmět: |
chemistry.chemical_classification
Aqueous solution Supramolecular chemistry Fluorescence spectrometry Surfaces and Interfaces Condensed Matter Physics chemistry.chemical_compound Monomer chemistry Pulmonary surfactant Polymer chemistry Electrochemistry Organic chemistry General Materials Science Cyanine J-aggregate Spectroscopy Alkyl |
| Zdroj: | Langmuir. 12:1159-1165 |
| ISSN: | 1520-5827 0743-7463 |
| DOI: | 10.1021/la950476+ |
| Popis: | The spectroscopic properties of a J-aggregating cyanine dye in the presence of betainic N-n-alkyl-N,N-dimethylammonio acid bromides with alkyl chain lengths between 10 and 16 carbon atoms are examined. In contrast to the usually observed deaggregating influence of micelle-forming agents, an increase in absorptivity and a decrease in J-band width are established. Furthermore, the spectroscopic properties of the J-band depend on the N-n-alkyl chain length of the surfactant. The coupling size of the aggregates increases in surfactant solution as compared to that in aqueous solution. The effects are attributed to a new type of supramolecular structure based on J-aggregates with enclosed monomer molecules of the surfactant. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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